go test 源码
golang test 代码
文件路径：/misc/cgo/test/test.go
// Copyright 2010 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Test cases for cgo.
// Both the import "C" prologue and the main file are sorted by issue number.
// This file contains C definitions (not just declarations)
// and so it must NOT contain any //export directives on Go functions.
// See testx.go for exports.
package cgotest
/*
#include <complex.h>
#include <math.h>
#include <stdarg.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/stat.h>
#include <errno.h>
#cgo LDFLAGS: -lm
#ifndef WIN32
#include <pthread.h>
#include <signal.h>
#endif
// alignment tests
typedef unsigned char Uint8;
typedef unsigned short Uint16;
typedef enum {
MOD1 = 0x0000,
MODX = 0x8000
} SDLMod;
typedef enum {
A1 = 1,
B1 = 322,
SDLK_LAST
} SDLKey;
typedef struct SDL_keysym {
Uint8 scancode;
SDLKey sym;
SDLMod mod;
Uint16 unicode;
} SDL_keysym;
typedef struct SDL_KeyboardEvent {
Uint8 typ;
Uint8 which;
Uint8 state;
SDL_keysym keysym;
} SDL_KeyboardEvent;
void makeEvent(SDL_KeyboardEvent *event) {
unsigned char *p;
int i;
p = (unsigned char*)event;
for (i=0; i<sizeof *event; i++) {
p[i] = i;
}
}
int same(SDL_KeyboardEvent* e, Uint8 typ, Uint8 which, Uint8 state, Uint8 scan, SDLKey sym, SDLMod mod, Uint16 uni) {
return e->typ == typ && e->which == which && e->state == state && e->keysym.scancode == scan && e->keysym.sym == sym && e->keysym.mod == mod && e->keysym.unicode == uni;
}
void cTest(SDL_KeyboardEvent *event) {
printf("C: %#x %#x %#x %#x %#x %#x %#x\n", event->typ, event->which, event->state,
event->keysym.scancode, event->keysym.sym, event->keysym.mod, event->keysym.unicode);
fflush(stdout);
}
// api
const char *greeting = "hello, world";
// basic test cases
#define SHIFT(x, y) ((x)<<(y))
#define KILO SHIFT(1, 10)
#define UINT32VAL 0xc008427bU
enum E {
Enum1 = 1,
Enum2 = 2,
};
typedef unsigned char cgo_uuid_t[20];
void uuid_generate(cgo_uuid_t x) {
x[0] = 0;
}
struct S {
int x;
};
const char *cstr = "abcefghijklmnopqrstuvwxyzABCEFGHIJKLMNOPQRSTUVWXYZ1234567890";
extern enum E myConstFunc(struct S* const ctx, int const id, struct S **const filter);
enum E myConstFunc(struct S *const ctx, int const id, struct S **const filter) { return 0; }
int add(int x, int y) {
return x+y;
};
// Following mimicks vulkan complex definitions for benchmarking cgocheck overhead.
typedef uint32_t VkFlags;
typedef VkFlags VkDeviceQueueCreateFlags;
typedef uint32_t VkStructureType;
typedef struct VkDeviceQueueCreateInfo {
VkStructureType sType;
const void* pNext;
VkDeviceQueueCreateFlags flags;
uint32_t queueFamilyIndex;
uint32_t queueCount;
const float* pQueuePriorities;
} VkDeviceQueueCreateInfo;
typedef struct VkPhysicalDeviceFeatures {
uint32_t bools[56];
} VkPhysicalDeviceFeatures;
typedef struct VkDeviceCreateInfo {
VkStructureType sType;
const void* pNext;
VkFlags flags;
uint32_t queueCreateInfoCount;
const VkDeviceQueueCreateInfo* pQueueCreateInfos;
uint32_t enabledLayerCount;
const char* const* ppEnabledLayerNames;
uint32_t enabledExtensionCount;
const char* const* ppEnabledExtensionNames;
const VkPhysicalDeviceFeatures* pEnabledFeatures;
} VkDeviceCreateInfo;
void handleComplexPointer(VkDeviceCreateInfo *a0) {}
void handleComplexPointer8(
VkDeviceCreateInfo *a0, VkDeviceCreateInfo *a1, VkDeviceCreateInfo *a2, VkDeviceCreateInfo *a3,
VkDeviceCreateInfo *a4, VkDeviceCreateInfo *a5, VkDeviceCreateInfo *a6, VkDeviceCreateInfo *a7
) {}
// complex alignment
struct {
float x;
_Complex float y;
} cplxAlign = { 3.14, 2.17 };
// constants and pointer checking
#define CheckConstVal 0
typedef struct {
int *p;
} CheckConstStruct;
static void CheckConstFunc(CheckConstStruct *p, int e) {}
// duplicate symbol
int base_symbol = 0;
#define alias_one base_symbol
#define alias_two base_symbol
// function pointer variables
typedef int (*intFunc) ();
int
bridge_int_func(intFunc f)
{
return f();
}
int fortytwo()
{
return 42;
}
// issue 1222
typedef union {
long align;
} xxpthread_mutex_t;
struct ibv_async_event {
union {
int x;
} element;
};
struct ibv_context {
xxpthread_mutex_t mutex;
};
// issue 1635
// Mac OS X's gcc will generate scattered relocation 2/1 for
// this function on Darwin/386, and 8l couldn't handle it.
// this example is in issue 1635
void scatter() {
void *p = scatter;
printf("scatter = %p\n", p);
}
// Adding this explicit extern declaration makes this a test for
// https://gcc.gnu.org/PR68072 aka https://golang.org/issue/13344 .
// It used to cause a cgo error when building with GCC 6.
extern int hola;
// this example is in issue 3253
int hola = 0;
int testHola() { return hola; }
// issue 3250
#ifdef WIN32
void testSendSIG() {}
#else
static void *thread(void *p) {
const int M = 100;
int i;
(void)p;
for (i = 0; i < M; i++) {
pthread_kill(pthread_self(), SIGCHLD);
usleep(rand() % 20 + 5);
}
return NULL;
}
void testSendSIG() {
const int N = 20;
int i;
pthread_t tid[N];
for (i = 0; i < N; i++) {
usleep(rand() % 200 + 100);
pthread_create(&tid[i], 0, thread, NULL);
}
for (i = 0; i < N; i++)
pthread_join(tid[i], 0);
}
#endif
// issue 3261
// libgcc on ARM might be compiled as thumb code, but our 5l
// can't handle that, so we have to disable this test on arm.
#ifdef __ARMEL__
int vabs(int x) {
puts("testLibgcc is disabled on ARM because 5l cannot handle thumb library.");
return (x < 0) ? -x : x;
}
#elif defined(__arm64__) && defined(__clang__)
int vabs(int x) {
puts("testLibgcc is disabled on ARM64 with clang due to lack of libgcc.");
return (x < 0) ? -x : x;
}
#else
int __absvsi2(int); // dummy prototype for libgcc function
// we shouldn't name the function abs, as gcc might use
// the builtin one.
int vabs(int x) { return __absvsi2(x); }
#endif
// issue 3729
// access errno from void C function
const char _expA = 0x42;
const float _expB = 3.14159;
const short _expC = 0x55aa;
const int _expD = 0xdeadbeef;
#ifdef WIN32
void g(void) {}
void g2(int x, char a, float b, short c, int d) {}
#else
void g(void) {
errno = E2BIG;
}
// try to pass some non-trivial arguments to function g2
void g2(int x, char a, float b, short c, int d) {
if (a == _expA && b == _expB && c == _expC && d == _expD)
errno = x;
else
errno = -1;
}
#endif
// issue 3945
// Test that cgo reserves enough stack space during cgo call.
// See https://golang.org/issue/3945 for details.
void say() {
printf("%s from C\n", "hello");
}
// issue 4054 part 1 - other half in testx.go
typedef enum {
A = 0,
B,
C,
D,
E,
F,
G,
H,
II,
J,
} issue4054a;
// issue 4339
// We've historically permitted #include <>, so test it here. Issue 29333.
// Also see issue 41059.
#include <issue4339.h>
// issue 4417
// cmd/cgo: bool alignment/padding issue.
// bool alignment is wrong and causing wrong arguments when calling functions.
static int c_bool(bool a, bool b, int c, bool d, bool e) {
return c;
}
// issue 4857
#cgo CFLAGS: -Werror
const struct { int a; } *issue4857() { return (void *)0; }
// issue 5224
// Test that the #cgo CFLAGS directive works,
// with and without platform filters.
#cgo CFLAGS: -DCOMMON_VALUE=123
#cgo windows CFLAGS: -DIS_WINDOWS=1
#cgo !windows CFLAGS: -DIS_WINDOWS=0
int common = COMMON_VALUE;
int is_windows = IS_WINDOWS;
// issue 5227
// linker incorrectly treats common symbols and
// leaves them undefined.
typedef struct {
int Count;
} Fontinfo;
Fontinfo SansTypeface;
extern void init();
Fontinfo loadfont() {
Fontinfo f = {0};
return f;
}
void init() {
SansTypeface = loadfont();
}
// issue 5242
// Cgo incorrectly computed the alignment of structs
// with no Go accessible fields as 0, and then panicked on
// modulo-by-zero computations.
// issue 50987
// disable arm64 GCC warnings
#cgo CFLAGS: -Wno-psabi -Wno-unknown-warning-option
typedef struct {
} foo;
typedef struct {
int x : 1;
} bar;
int issue5242(foo f, bar b) {
return 5242;
}
// issue 5337
// Verify that we can withstand SIGPROF received on foreign threads
#ifdef WIN32
void test5337() {}
#else
static void *thread1(void *p) {
(void)p;
pthread_kill(pthread_self(), SIGPROF);
return NULL;
}
void test5337() {
pthread_t tid;
pthread_create(&tid, 0, thread1, NULL);
pthread_join(tid, 0);
}
#endif
// issue 5603
const long long issue5603exp = 0x12345678;
long long issue5603foo0() { return issue5603exp; }
long long issue5603foo1(void *p) { return issue5603exp; }
long long issue5603foo2(void *p, void *q) { return issue5603exp; }
long long issue5603foo3(void *p, void *q, void *r) { return issue5603exp; }
long long issue5603foo4(void *p, void *q, void *r, void *s) { return issue5603exp; }
// issue 5740
int test5740a(void), test5740b(void);
// issue 5986
static void output5986()
{
int current_row = 0, row_count = 0;
double sum_squares = 0;
double d;
do {
if (current_row == 10) {
current_row = 0;
}
++row_count;
}
while (current_row++ != 1);
d = sqrt(sum_squares / row_count);
printf("sqrt is: %g\n", d);
}
// issue 6128
// Test handling of #defined names in clang.
// NOTE: Must use hex, or else a shortcut for decimals
// in cgo avoids trying to pass this to clang.
#define X 0x1
// issue 6472
typedef struct
{
struct
{
int x;
} y[16];
} z;
// issue 6612
// Test new scheme for deciding whether C.name is an expression, type, constant.
// Clang silences some warnings when the name is a #defined macro, so test those too
// (even though we now use errors exclusively, not warnings).
void myfunc(void) {}
int myvar = 5;
const char *mytext = "abcdef";
typedef int mytype;
enum {
myenum = 1234,
};
#define myfunc_def myfunc
#define myvar_def myvar
#define mytext_def mytext
#define mytype_def mytype
#define myenum_def myenum
#define myint_def 12345
#define myfloat_def 1.5
#define mystring_def "hello"
// issue 6907
char* Issue6907CopyString(_GoString_ s) {
size_t n;
const char *p;
char *r;
n = _GoStringLen(s);
p = _GoStringPtr(s);
r = malloc(n + 1);
memmove(r, p, n);
r[n] = '\0';
return r;
}
// issue 7560
typedef struct {
char x;
long y;
} __attribute__((__packed__)) misaligned;
int
offset7560(void)
{
return (uintptr_t)&((misaligned*)0)->y;
}
// issue 7786
// No runtime test, just make sure that typedef and struct/union/class are interchangeable at compile time.
struct test7786;
typedef struct test7786 typedef_test7786;
void f7786(struct test7786 *ctx) {}
void g7786(typedef_test7786 *ctx) {}
typedef struct body7786 typedef_body7786;
struct body7786 { int x; };
void b7786(struct body7786 *ctx) {}
void c7786(typedef_body7786 *ctx) {}
typedef union union7786 typedef_union7786;
void u7786(union union7786 *ctx) {}
void v7786(typedef_union7786 *ctx) {}
// issue 8092
// Test that linker defined symbols (e.g., text, data) don't
// conflict with C symbols.
char text[] = "text";
char data[] = "data";
char *ctext(void) { return text; }
char *cdata(void) { return data; }
// issue 8428
// Cgo inconsistently translated zero size arrays.
struct issue8428one {
char b;
char rest[];
};
struct issue8428two {
void *p;
char b;
char rest[0];
char pad;
};
struct issue8428three {
char w[1][2][3][0];
char x[2][3][0][1];
char y[3][0][1][2];
char z[0][1][2][3];
};
// issue 8331 part 1 - part 2 in testx.go
// A typedef of an unnamed struct is the same struct when
// #include'd twice. No runtime test; just make sure it compiles.
#include "issue8331.h"
// issue 8368 and 8441
// Recursive struct definitions didn't work.
// No runtime test; just make sure it compiles.
typedef struct one one;
typedef struct two two;
struct one {
two *x;
};
struct two {
one *x;
};
// issue 8811
extern int issue8811Initialized;
extern void issue8811Init();
void issue8811Execute() {
if(!issue8811Initialized)
issue8811Init();
}
// issue 8945
typedef void (*PFunc8945)();
PFunc8945 func8945;
// issue 9557
struct issue9557_t {
int a;
} test9557bar = { 42 };
struct issue9557_t *issue9557foo = &test9557bar;
// issue 10303
// Pointers passed to C were not marked as escaping (bug in cgo).
typedef int *intptr;
void setintstar(int *x) {
*x = 1;
}
void setintptr(intptr x) {
*x = 1;
}
void setvoidptr(void *x) {
*(int*)x = 1;
}
typedef struct Struct Struct;
struct Struct {
int *P;
};
void setstruct(Struct s) {
*s.P = 1;
}
// issue 11925
// Structs with zero-length trailing fields are now padded by the Go compiler.
struct a11925 {
int i;
char a[0];
char b[0];
};
struct b11925 {
int i;
char a[0];
char b[];
};
// issue 12030
void issue12030conv(char *buf, double x) {
sprintf(buf, "d=%g", x);
}
// issue 14838
int check_cbytes(char *b, size_t l) {
int i;
for (i = 0; i < l; i++) {
if (b[i] != i) {
return 0;
}
}
return 1;
}
// issue 17065
// Test that C symbols larger than a page play nicely with the race detector.
int ii[65537];
// issue 17537
// The void* cast introduced by cgo to avoid problems
// with const/volatile qualifiers breaks C preprocessor macros that
// emulate functions.
typedef struct {
int i;
} S17537;
int I17537(S17537 *p);
#define I17537(p) ((p)->i)
// Calling this function used to fail without the cast.
const int F17537(const char **p) {
return **p;
}
// issue 17723
// API compatibility checks
typedef char *cstring_pointer;
static void cstring_pointer_fun(cstring_pointer dummy) { }
const char *api_hello = "hello!";
// Calling this function used to trigger an error from the C compiler
// (issue 18298).
void F18298(const void *const *p) {
}
// Test that conversions between typedefs work as they used to.
typedef const void *T18298_1;
struct S18298 { int i; };
typedef const struct S18298 *T18298_2;
void G18298(T18298_1 t) {
}
// issue 18126
// cgo check of void function returning errno.
void Issue18126C(void **p) {}
// issue 18720
#define HELLO "hello"
#define WORLD "world"
#define HELLO_WORLD HELLO "\000" WORLD
struct foo { char c; };
#define SIZE_OF(x) sizeof(x)
#define SIZE_OF_FOO SIZE_OF(struct foo)
#define VAR1 VAR
#define VAR var
int var = 5;
#define ADDR &var
#define CALL fn()
int fn(void) {
return ++var;
}
// issue 20129
int issue20129 = 0;
typedef void issue20129Void;
issue20129Void issue20129Foo() {
issue20129 = 1;
}
typedef issue20129Void issue20129Void2;
issue20129Void2 issue20129Bar() {
issue20129 = 2;
}
// issue 20369
#define XUINT64_MAX 18446744073709551615ULL
// issue 21668
// Fail to guess the kind of the constant "x".
// No runtime test; just make sure it compiles.
const int x21668 = 42;
// issue 21708
#define CAST_TO_INT64 (int64_t)(-1)
// issue 21809
// Compile C `typedef` to go type aliases.
typedef long MySigned_t;
// tests alias-to-alias
typedef MySigned_t MySigned2_t;
long takes_long(long x) { return x * x; }
MySigned_t takes_typedef(MySigned_t x) { return x * x; }
// issue 22906
// It's going to be hard to include a whole real JVM to test this.
// So we'll simulate a really easy JVM using just the parts we need.
// This is the relevant part of jni.h.
struct _jobject;
typedef struct _jobject *jobject;
typedef jobject jclass;
typedef jobject jthrowable;
typedef jobject jstring;
typedef jobject jarray;
typedef jarray jbooleanArray;
typedef jarray jbyteArray;
typedef jarray jcharArray;
typedef jarray jshortArray;
typedef jarray jintArray;
typedef jarray jlongArray;
typedef jarray jfloatArray;
typedef jarray jdoubleArray;
typedef jarray jobjectArray;
typedef jobject jweak;
// Note: jvalue is already a non-pointer type due to it being a C union.
// issue 22958
typedef struct {
unsigned long long f8 : 8;
unsigned long long f16 : 16;
unsigned long long f24 : 24;
unsigned long long f32 : 32;
unsigned long long f40 : 40;
unsigned long long f48 : 48;
unsigned long long f56 : 56;
unsigned long long f64 : 64;
} issue22958Type;
// issue 23356
int a(void) { return 5; };
int r(void) { return 3; };
// issue 23720
typedef int *issue23720A;
typedef const int *issue23720B;
void issue23720F(issue23720B a) {}
// issue 24206
#if defined(__linux__) && defined(__x86_64__)
#include <sys/mman.h>
// Returns string with null byte at the last valid address
char* dangerousString1() {
int pageSize = 4096;
char *data = mmap(0, 2 * pageSize, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, 0, 0);
mprotect(data + pageSize,pageSize,PROT_NONE);
int start = pageSize - 123 - 1; // last 123 bytes of first page + 1 null byte
int i = start;
for (; i < pageSize; i++) {
data[i] = 'x';
}
data[pageSize -1 ] = 0;
return data+start;
}
char* dangerousString2() {
int pageSize = 4096;
char *data = mmap(0, 3 * pageSize, PROT_READ|PROT_WRITE, MAP_ANON|MAP_PRIVATE, 0, 0);
mprotect(data + 2 * pageSize,pageSize,PROT_NONE);
int start = pageSize - 123 - 1; // last 123 bytes of first page + 1 null byte
int i = start;
for (; i < 2 * pageSize; i++) {
data[i] = 'x';
}
data[2*pageSize -1 ] = 0;
return data+start;
}
#else
char *dangerousString1() { return NULL; }
char *dangerousString2() { return NULL; }
#endif
// issue 26066
const unsigned long long int issue26066 = (const unsigned long long) -1;
// issue 26517
// Introduce two pointer types which are distinct, but have the same
// base type. Make sure that both of those pointer types get resolved
// correctly. Before the fix for 26517 if one of these pointer types
// was resolved before the other one was processed, the second one
// would never be resolved.
// Before this issue was fixed this test failed on Windows,
// where va_list expands to a named char* type.
typedef va_list TypeOne;
typedef char *TypeTwo;
// issue 28540
static void twoargs1(void *p, int n) {}
static void *twoargs2() { return 0; }
static int twoargs3(void * p) { return 0; }
// issue 28545
// Failed to add type conversion for negative constant.
static void issue28545F(char **p, int n, complex double a) {}
// issue 28772 part 1 - part 2 in testx.go
// Failed to add type conversion for Go constant set to C constant.
// No runtime test; just make sure it compiles.
#define issue28772Constant 1
// issue 28896
// cgo was incorrectly adding padding after a packed struct.
typedef struct {
void *f1;
uint32_t f2;
} __attribute__((__packed__)) innerPacked;
typedef struct {
innerPacked g1;
uint64_t g2;
} outerPacked;
typedef struct {
void *f1;
uint32_t f2;
} innerUnpacked;
typedef struct {
innerUnpacked g1;
uint64_t g2;
} outerUnpacked;
size_t offset(int x) {
switch (x) {
case 0:
return offsetof(innerPacked, f2);
case 1:
return offsetof(outerPacked, g2);
case 2:
return offsetof(innerUnpacked, f2);
case 3:
return offsetof(outerUnpacked, g2);
default:
abort();
}
}
// issue 29748
typedef struct { char **p; } S29748;
static int f29748(S29748 *p) { return 0; }
// issue 29781
// Error with newline inserted into constant expression.
// Compilation test only, nothing to run.
static void issue29781F(char **p, int n) {}
#define ISSUE29781C 0
// issue 31093
static uint16_t issue31093F(uint16_t v) { return v; }
// issue 32579
typedef struct S32579 { unsigned char data[1]; } S32579;
// issue 37033, cgo.Handle
extern void GoFunc37033(uintptr_t handle);
void cFunc37033(uintptr_t handle) { GoFunc37033(handle); }
// issue 38649
// Test that #define'd type aliases work.
#define netbsd_gid unsigned int
// issue 40494
// Inconsistent handling of tagged enum and union types.
enum Enum40494 { X_40494 };
union Union40494 { int x; };
void issue40494(enum Enum40494 e, union Union40494* up) {}
// Issue 45451, bad handling of go:notinheap types.
typedef struct issue45451Undefined issue45451;
// Issue 49633, example of cgo.Handle with void*.
extern void GoFunc49633(void*);
void cfunc49633(void *context) { GoFunc49633(context); }
*/
import "C"
import (
"context"
"fmt"
"math"
"math/rand"
"os"
"os/signal"
"reflect"
"runtime"
"runtime/cgo"
"sync"
"syscall"
"testing"
"time"
"unsafe"
)
// alignment
func testAlign(t *testing.T) {
var evt C.SDL_KeyboardEvent
C.makeEvent(&evt)
if C.same(&evt, evt.typ, evt.which, evt.state, evt.keysym.scancode, evt.keysym.sym, evt.keysym.mod, evt.keysym.unicode) == 0 {
t.Error("*** bad alignment")
C.cTest(&evt)
t.Errorf("Go: %#x %#x %#x %#x %#x %#x %#x\n",
evt.typ, evt.which, evt.state, evt.keysym.scancode,
evt.keysym.sym, evt.keysym.mod, evt.keysym.unicode)
t.Error(evt)
}
}
// api
const greeting = "hello, world"
type testPair struct {
Name string
Got, Want interface{}
}
var testPairs = []testPair{
{"GoString", C.GoString(C.greeting), greeting},
{"GoStringN", C.GoStringN(C.greeting, 5), greeting[:5]},
{"GoBytes", C.GoBytes(unsafe.Pointer(C.greeting), 5), []byte(greeting[:5])},
}
func testHelpers(t *testing.T) {
for _, pair := range testPairs {
if !reflect.DeepEqual(pair.Got, pair.Want) {
t.Errorf("%s: got %#v, want %#v", pair.Name, pair.Got, pair.Want)
}
}
}
// basic test cases
const EINVAL = C.EINVAL /* test #define */
var KILO = C.KILO
func uuidgen() {
var uuid C.cgo_uuid_t
C.uuid_generate(&uuid[0])
}
func Strtol(s string, base int) (int, error) {
p := C.CString(s)
n, err := C.strtol(p, nil, C.int(base))
C.free(unsafe.Pointer(p))
return int(n), err
}
func Atol(s string) int {
p := C.CString(s)
n := C.atol(p)
C.free(unsafe.Pointer(p))
return int(n)
}
func testConst(t *testing.T) {
C.myConstFunc(nil, 0, nil)
}
func testEnum(t *testing.T) {
if C.Enum1 != 1 || C.Enum2 != 2 {
t.Error("bad enum", C.Enum1, C.Enum2)
}
}
func testNamedEnum(t *testing.T) {
e := new(C.enum_E)
*e = C.Enum1
if *e != 1 {
t.Error("bad enum", C.Enum1)
}
*e = C.Enum2
if *e != 2 {
t.Error("bad enum", C.Enum2)
}
}
func testCastToEnum(t *testing.T) {
e := C.enum_E(C.Enum1)
if e != 1 {
t.Error("bad enum", C.Enum1)
}
e = C.enum_E(C.Enum2)
if e != 2 {
t.Error("bad enum", C.Enum2)
}
}
func testAtol(t *testing.T) {
l := Atol("123")
if l != 123 {
t.Error("Atol 123: ", l)
}
}
func testErrno(t *testing.T) {
p := C.CString("no-such-file")
m := C.CString("r")
f, err := C.fopen(p, m)
C.free(unsafe.Pointer(p))
C.free(unsafe.Pointer(m))
if err == nil {
C.fclose(f)
t.Fatalf("C.fopen: should fail")
}
if err != syscall.ENOENT {
t.Fatalf("C.fopen: unexpected error: %v", err)
}
}
func testMultipleAssign(t *testing.T) {
p := C.CString("234")
n, m := C.strtol(p, nil, 345), C.strtol(p, nil, 10)
if runtime.GOOS == "openbsd" {
// Bug in OpenBSD strtol(3) - base > 36 succeeds.
if (n != 0 && n != 239089) || m != 234 {
t.Fatal("Strtol x2: ", n, m)
}
} else if n != 0 || m != 234 {
t.Fatal("Strtol x2: ", n, m)
}
C.free(unsafe.Pointer(p))
}
var (
cuint = (C.uint)(0)
culong C.ulong
cchar C.char
)
type Context struct {
ctx *C.struct_ibv_context
}
func benchCgoCall(b *testing.B) {
b.Run("add-int", func(b *testing.B) {
const x = C.int(2)
const y = C.int(3)
for i := 0; i < b.N; i++ {
C.add(x, y)
}
})
b.Run("one-pointer", func(b *testing.B) {
var a0 C.VkDeviceCreateInfo
for i := 0; i < b.N; i++ {
C.handleComplexPointer(&a0)
}
})
b.Run("eight-pointers", func(b *testing.B) {
var a0, a1, a2, a3, a4, a5, a6, a7 C.VkDeviceCreateInfo
for i := 0; i < b.N; i++ {
C.handleComplexPointer8(&a0, &a1, &a2, &a3, &a4, &a5, &a6, &a7)
}
})
b.Run("eight-pointers-nil", func(b *testing.B) {
var a0, a1, a2, a3, a4, a5, a6, a7 *C.VkDeviceCreateInfo
for i := 0; i < b.N; i++ {
C.handleComplexPointer8(a0, a1, a2, a3, a4, a5, a6, a7)
}
})
b.Run("eight-pointers-array", func(b *testing.B) {
var a [8]C.VkDeviceCreateInfo
for i := 0; i < b.N; i++ {
C.handleComplexPointer8(&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6], &a[7])
}
})
b.Run("eight-pointers-slice", func(b *testing.B) {
a := make([]C.VkDeviceCreateInfo, 8)
for i := 0; i < b.N; i++ {
C.handleComplexPointer8(&a[0], &a[1], &a[2], &a[3], &a[4], &a[5], &a[6], &a[7])
}
})
}
// Benchmark measuring overhead from Go to C and back to Go (via a callback)
func benchCallback(b *testing.B) {
var x = false
for i := 0; i < b.N; i++ {
nestedCall(func() { x = true })
}
if !x {
b.Fatal("nestedCall was not invoked")
}
}
var sinkString string
func benchGoString(b *testing.B) {
for i := 0; i < b.N; i++ {
sinkString = C.GoString(C.cstr)
}
const want = "abcefghijklmnopqrstuvwxyzABCEFGHIJKLMNOPQRSTUVWXYZ1234567890"
if sinkString != want {
b.Fatalf("%q != %q", sinkString, want)
}
}
// Static (build-time) test that syntax traversal visits all operands of s[i:j:k].
func sliceOperands(array [2000]int) {
_ = array[C.KILO:C.KILO:C.KILO] // no type error
}
// set in cgo_thread_lock.go init
var testThreadLockFunc = func(*testing.T) {}
// complex alignment
func TestComplexAlign(t *testing.T) {
if C.cplxAlign.x != 3.14 {
t.Errorf("got %v, expected 3.14", C.cplxAlign.x)
}
if C.cplxAlign.y != 2.17 {
t.Errorf("got %v, expected 2.17", C.cplxAlign.y)
}
}
// constants and pointer checking
func testCheckConst(t *testing.T) {
// The test is that this compiles successfully.
p := C.malloc(C.size_t(unsafe.Sizeof(C.int(0))))
defer C.free(p)
C.CheckConstFunc(&C.CheckConstStruct{(*C.int)(p)}, C.CheckConstVal)
}
// duplicate symbol
func duplicateSymbols() {
fmt.Printf("%v %v %v\n", C.base_symbol, C.alias_one, C.alias_two)
}
// environment
// This is really an os package test but here for convenience.
func testSetEnv(t *testing.T) {
if runtime.GOOS == "windows" {
// Go uses SetEnvironmentVariable on windows. However,
// C runtime takes a *copy* at process startup of the
// OS environment, and stores it in environ/envp.
// It is this copy that getenv/putenv manipulate.
t.Logf("skipping test")
return
}
const key = "CGO_OS_TEST_KEY"
const val = "CGO_OS_TEST_VALUE"
os.Setenv(key, val)
keyc := C.CString(key)
defer C.free(unsafe.Pointer(keyc))
v := C.getenv(keyc)
if uintptr(unsafe.Pointer(v)) == 0 {
t.Fatal("getenv returned NULL")
}
vs := C.GoString(v)
if vs != val {
t.Fatalf("getenv() = %q; want %q", vs, val)
}
}
// function pointer variables
func callBridge(f C.intFunc) int {
return int(C.bridge_int_func(f))
}
func callCBridge(f C.intFunc) C.int {
return C.bridge_int_func(f)
}
func testFpVar(t *testing.T) {
const expected = 42
f := C.intFunc(C.fortytwo)
res1 := C.bridge_int_func(f)
if r1 := int(res1); r1 != expected {
t.Errorf("got %d, want %d", r1, expected)
}
res2 := callCBridge(f)
if r2 := int(res2); r2 != expected {
t.Errorf("got %d, want %d", r2, expected)
}
r3 := callBridge(f)
if r3 != expected {
t.Errorf("got %d, want %d", r3, expected)
}
}
// issue 1222
type AsyncEvent struct {
event C.struct_ibv_async_event
}
// issue 1635
func test1635(t *testing.T) {
C.scatter()
if v := C.hola; v != 0 {
t.Fatalf("C.hola is %d, should be 0", v)
}
if v := C.testHola(); v != 0 {
t.Fatalf("C.testHola() is %d, should be 0", v)
}
}
// issue 2470
func testUnsignedInt(t *testing.T) {
a := (int64)(C.UINT32VAL)
b := (int64)(0xc008427b)
if a != b {
t.Errorf("Incorrect unsigned int - got %x, want %x", a, b)
}
}
// issue 3250
func test3250(t *testing.T) {
if runtime.GOOS == "windows" {
t.Skip("not applicable on windows")
}
t.Skip("skipped, see golang.org/issue/5885")
var (
thres = 1
sig = syscall_dot_SIGCHLD
)
type result struct {
n int
sig os.Signal
}
var (
sigCh = make(chan os.Signal, 10)
waitStart = make(chan struct{})
waitDone = make(chan result)
)
signal.Notify(sigCh, sig)
go func() {
n := 0
alarm := time.After(time.Second * 3)
for {
select {
case <-waitStart:
waitStart = nil
case v := <-sigCh:
n++
if v != sig || n > thres {
waitDone <- result{n, v}
return
}
case <-alarm:
waitDone <- result{n, sig}
return
}
}
}()
waitStart <- struct{}{}
C.testSendSIG()
r := <-waitDone
if r.sig != sig {
t.Fatalf("received signal %v, but want %v", r.sig, sig)
}
t.Logf("got %d signals\n", r.n)
if r.n <= thres {
t.Fatalf("expected more than %d", thres)
}
}
// issue 3261
func testLibgcc(t *testing.T) {
var table = []struct {
in, out C.int
}{
{0, 0},
{1, 1},
{-42, 42},
{1000300, 1000300},
{1 - 1<<31, 1<<31 - 1},
}
for _, v := range table {
if o := C.vabs(v.in); o != v.out {
t.Fatalf("abs(%d) got %d, should be %d", v.in, o, v.out)
return
}
}
}
// issue 3729
func test3729(t *testing.T) {
if runtime.GOOS == "windows" {
t.Skip("skipping on windows")
}
_, e := C.g()
if e != syscall.E2BIG {
t.Errorf("got %q, expect %q", e, syscall.E2BIG)
}
_, e = C.g2(C.EINVAL, C._expA, C._expB, C._expC, C._expD)
if e != syscall.EINVAL {
t.Errorf("got %q, expect %q", e, syscall.EINVAL)
}
}
// issue 3945
func testPrintf(t *testing.T) {
C.say()
}
// issue 4054
var issue4054a = []int{C.A, C.B, C.C, C.D, C.E, C.F, C.G, C.H, C.I, C.J}
// issue 4339
func test4339(t *testing.T) {
C.handle4339(&C.exported4339)
}
// issue 4417
func testBoolAlign(t *testing.T) {
b := C.c_bool(true, true, 10, true, false)
if b != 10 {
t.Fatalf("found %d expected 10\n", b)
}
b = C.c_bool(true, true, 5, true, true)
if b != 5 {
t.Fatalf("found %d expected 5\n", b)
}
b = C.c_bool(true, true, 3, true, false)
if b != 3 {
t.Fatalf("found %d expected 3\n", b)
}
b = C.c_bool(false, false, 1, true, false)
if b != 1 {
t.Fatalf("found %d expected 1\n", b)
}
b = C.c_bool(false, true, 200, true, false)
if b != 200 {
t.Fatalf("found %d expected 200\n", b)
}
}
// issue 4857
func test4857() {
_ = C.issue4857()
}
// issue 5224
func testCflags(t *testing.T) {
is_windows := C.is_windows == 1
if is_windows != (runtime.GOOS == "windows") {
t.Errorf("is_windows: %v, runtime.GOOS: %s", is_windows, runtime.GOOS)
}
if C.common != 123 {
t.Errorf("common: %v (expected 123)", C.common)
}
}
// issue 5227
func test5227(t *testing.T) {
C.init()
}
func selectfont() C.Fontinfo {
return C.SansTypeface
}
// issue 5242
func test5242(t *testing.T) {
if got := C.issue5242(C.foo{}, C.bar{}); got != 5242 {
t.Errorf("got %v", got)
}
}
func test5603(t *testing.T) {
var x [5]int64
exp := int64(C.issue5603exp)
x[0] = int64(C.issue5603foo0())
x[1] = int64(C.issue5603foo1(nil))
x[2] = int64(C.issue5603foo2(nil, nil))
x[3] = int64(C.issue5603foo3(nil, nil, nil))
x[4] = int64(C.issue5603foo4(nil, nil, nil, nil))
for i, v := range x {
if v != exp {
t.Errorf("issue5603foo%d() returns %v, expected %v", i, v, exp)
}
}
}
// issue 5337
func test5337(t *testing.T) {
C.test5337()
}
// issue 5740
func test5740(t *testing.T) {
if v := C.test5740a() + C.test5740b(); v != 5 {
t.Errorf("expected 5, got %v", v)
}
}
// issue 5986
func test5986(t *testing.T) {
C.output5986()
}
// issue 6128
func test6128() {
// nothing to run, just make sure this compiles.
_ = C.X
}
// issue 6390
func test6390(t *testing.T) {
p1 := C.malloc(1024)
if p1 == nil {
t.Fatalf("C.malloc(1024) returned nil")
}
p2 := C.malloc(0)
if p2 == nil {
t.Fatalf("C.malloc(0) returned nil")
}
C.free(p1)
C.free(p2)
}
func test6472() {
// nothing to run, just make sure this compiles
s := new(C.z)
println(s.y[0].x)
}
// issue 6506
func test6506() {
// nothing to run, just make sure this compiles
var x C.size_t
C.calloc(x, x)
C.malloc(x)
C.realloc(nil, x)
C.memcpy(nil, nil, x)
C.memcmp(nil, nil, x)
C.memmove(nil, nil, x)
C.strncpy(nil, nil, x)
C.strncmp(nil, nil, x)
C.strncat(nil, nil, x)
x = C.strxfrm(nil, nil, x)
C.memchr(nil, 0, x)
x = C.strcspn(nil, nil)
x = C.strspn(nil, nil)
C.memset(nil, 0, x)
x = C.strlen(nil)
_ = x
}
// issue 6612
func testNaming(t *testing.T) {
C.myfunc()
C.myfunc_def()
if v := C.myvar; v != 5 {
t.Errorf("C.myvar = %d, want 5", v)
}
if v := C.myvar_def; v != 5 {
t.Errorf("C.myvar_def = %d, want 5", v)
}
if s := C.GoString(C.mytext); s != "abcdef" {
t.Errorf("C.mytext = %q, want %q", s, "abcdef")
}
if s := C.GoString(C.mytext_def); s != "abcdef" {
t.Errorf("C.mytext_def = %q, want %q", s, "abcdef")
}
if c := C.myenum; c != 1234 {
t.Errorf("C.myenum = %v, want 1234", c)
}
if c := C.myenum_def; c != 1234 {
t.Errorf("C.myenum_def = %v, want 1234", c)
}
{
const c = C.myenum
if c != 1234 {
t.Errorf("C.myenum as const = %v, want 1234", c)
}
}
{
const c = C.myenum_def
if c != 1234 {
t.Errorf("C.myenum as const = %v, want 1234", c)
}
}
if c := C.myint_def; c != 12345 {
t.Errorf("C.myint_def = %v, want 12345", c)
}
{
const c = C.myint_def
if c != 12345 {
t.Errorf("C.myint as const = %v, want 12345", c)
}
}
if c := C.myfloat_def; c != 1.5 {
t.Errorf("C.myint_def = %v, want 1.5", c)
}
{
const c = C.myfloat_def
if c != 1.5 {
t.Errorf("C.myint as const = %v, want 1.5", c)
}
}
if s := C.mystring_def; s != "hello" {
t.Errorf("C.mystring_def = %q, want %q", s, "hello")
}
}
// issue 6907
func test6907(t *testing.T) {
want := "yarn"
if got := C.GoString(C.Issue6907CopyString(want)); got != want {
t.Errorf("C.GoString(C.Issue6907CopyString(%q)) == %q, want %q", want, got, want)
}
}
// issue 7560
func test7560(t *testing.T) {
// some mingw don't implement __packed__ correctly.
if C.offset7560() != 1 {
t.Skip("C compiler did not pack struct")
}
// C.misaligned should have x but then a padding field to get to the end of the struct.
// There should not be a field named 'y'.
var v C.misaligned
rt := reflect.TypeOf(&v).Elem()
if rt.NumField() != 2 || rt.Field(0).Name != "x" || rt.Field(1).Name != "_" {
t.Errorf("unexpected fields in C.misaligned:\n")
for i := 0; i < rt.NumField(); i++ {
t.Logf("%+v\n", rt.Field(i))
}
}
}
// issue 7786
func f() {
var x1 *C.typedef_test7786
var x2 *C.struct_test7786
x1 = x2
x2 = x1
C.f7786(x1)
C.f7786(x2)
C.g7786(x1)
C.g7786(x2)
var b1 *C.typedef_body7786
var b2 *C.struct_body7786
b1 = b2
b2 = b1
C.b7786(b1)
C.b7786(b2)
C.c7786(b1)
C.c7786(b2)
var u1 *C.typedef_union7786
var u2 *C.union_union7786
u1 = u2
u2 = u1
C.u7786(u1)
C.u7786(u2)
C.v7786(u1)
C.v7786(u2)
}
// issue 8092
func test8092(t *testing.T) {
tests := []struct {
s string
a, b *C.char
}{
{"text", &C.text[0], C.ctext()},
{"data", &C.data[0], C.cdata()},
}
for _, test := range tests {
if test.a != test.b {
t.Errorf("%s: pointer mismatch: %v != %v", test.s, test.a, test.b)
}
if got := C.GoString(test.a); got != test.s {
t.Errorf("%s: points at %#v, want %#v", test.s, got, test.s)
}
}
}
// issues 8368 and 8441
func issue8368(one *C.struct_one, two *C.struct_two) {
}
func issue8441(one *C.one, two *C.two) {
issue8441(two.x, one.x)
}
// issue 8428
var _ = C.struct_issue8428one{
b: C.char(0),
// The trailing rest field is not available in cgo.
// See issue 11925.
// rest: [0]C.char{},
}
var _ = C.struct_issue8428two{
p: unsafe.Pointer(nil),
b: C.char(0),
rest: [0]C.char{},
}
var _ = C.struct_issue8428three{
w: [1][2][3][0]C.char{},
x: [2][3][0][1]C.char{},
y: [3][0][1][2]C.char{},
z: [0][1][2][3]C.char{},
}
// issue 8811
func test8811(t *testing.T) {
C.issue8811Execute()
}
// issue 9557
func test9557(t *testing.T) {
// implicitly dereference a Go variable
foo := C.issue9557foo
if v := foo.a; v != 42 {
t.Fatalf("foo.a expected 42, but got %d", v)
}
// explicitly dereference a C variable
if v := (*C.issue9557foo).a; v != 42 {
t.Fatalf("(*C.issue9557foo).a expected 42, but is %d", v)
}
// implicitly dereference a C variable
if v := C.issue9557foo.a; v != 42 {
t.Fatalf("C.issue9557foo.a expected 42, but is %d", v)
}
}
// issue 8331 part 1
func issue8331a() C.issue8331 {
return issue8331Var
}
// issue 10303
func test10303(t *testing.T, n int) {
if runtime.Compiler == "gccgo" {
t.Skip("gccgo permits C pointers on the stack")
}
// Run at a few different stack depths just to avoid an unlucky pass
// due to variables ending up on different pages.
if n > 0 {
test10303(t, n-1)
}
if t.Failed() {
return
}
var x, y, z, v, si C.int
var s C.Struct
C.setintstar(&x)
C.setintptr(&y)
C.setvoidptr(unsafe.Pointer(&v))
s.P = &si
C.setstruct(s)
if uintptr(unsafe.Pointer(&x))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
t.Error("C int* argument on stack")
}
if uintptr(unsafe.Pointer(&y))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
t.Error("C intptr argument on stack")
}
if uintptr(unsafe.Pointer(&v))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
t.Error("C void* argument on stack")
}
if uintptr(unsafe.Pointer(&si))&^0xfff == uintptr(unsafe.Pointer(&z))&^0xfff {
t.Error("C struct field pointer on stack")
}
}
// issue 11925
func test11925(t *testing.T) {
if C.sizeof_struct_a11925 != unsafe.Sizeof(C.struct_a11925{}) {
t.Errorf("size of a changed: C %d, Go %d", C.sizeof_struct_a11925, unsafe.Sizeof(C.struct_a11925{}))
}
if C.sizeof_struct_b11925 != unsafe.Sizeof(C.struct_b11925{}) {
t.Errorf("size of b changed: C %d, Go %d", C.sizeof_struct_b11925, unsafe.Sizeof(C.struct_b11925{}))
}
}
// issue 12030
func test12030(t *testing.T) {
buf := (*C.char)(C.malloc(256))
defer C.free(unsafe.Pointer(buf))
for _, f := range []float64{1.0, 2.0, 3.14} {
C.issue12030conv(buf, C.double(f))
got := C.GoString(buf)
if want := fmt.Sprintf("d=%g", f); got != want {
t.Fatalf("C.sprintf failed for %g: %q != %q", f, got, want)
}
}
}
// issue 13402
var _ C.complexfloat
var _ C.complexdouble
// issue 13930
// Test that cgo's multiple-value special form for
// C function calls works in variable declaration statements.
var _, _ = C.abs(0)
// issue 14838
func test14838(t *testing.T) {
data := []byte{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
cData := C.CBytes(data)
defer C.free(cData)
if C.check_cbytes((*C.char)(cData), C.size_t(len(data))) == 0 {
t.Fatalf("mismatched data: expected %v, got %v", data, (*(*[10]byte)(unsafe.Pointer(cData)))[:])
}
}
// issue 17065
var sink C.int
func test17065(t *testing.T) {
if runtime.GOOS == "darwin" || runtime.GOOS == "ios" {
t.Skip("broken on darwin; issue 17065")
}
for i := range C.ii {
sink = C.ii[i]
}
}
// issue 17537
func test17537(t *testing.T) {
v := C.S17537{i: 17537}
if got, want := C.I17537(&v), C.int(17537); got != want {
t.Errorf("got %d, want %d", got, want)
}
p := (*C.char)(C.malloc(1))
*p = 17
if got, want := C.F17537(&p), C.int(17); got != want {
t.Errorf("got %d, want %d", got, want)
}
C.F18298(nil)
var v18298 C.T18298_2
C.G18298(C.T18298_1(v18298))
}
// issue 17723
func testAPI() {
var cs *C.char
cs = C.CString("hello")
defer C.free(unsafe.Pointer(cs))
var s string
s = C.GoString((*C.char)(C.api_hello))
s = C.GoStringN((*C.char)(C.api_hello), C.int(6))
var b []byte
b = C.GoBytes(unsafe.Pointer(C.api_hello), C.int(6))
_, _ = s, b
C.cstring_pointer_fun(nil)
}
// issue 18126
func test18126(t *testing.T) {
p := C.malloc(1)
_, err := C.Issue18126C(&p)
C.free(p)
_ = err
}
// issue 18720
func test18720(t *testing.T) {
if got, want := C.HELLO_WORLD, "hello\000world"; got != want {
t.Errorf("C.HELLO_WORLD == %q, expected %q", got, want)
}
if got, want := C.VAR1, C.int(5); got != want {
t.Errorf("C.VAR1 == %v, expected %v", got, want)
}
if got, want := *C.ADDR, C.int(5); got != want {
t.Errorf("*C.ADDR == %v, expected %v", got, want)
}
if got, want := C.CALL, C.int(6); got != want {
t.Errorf("C.CALL == %v, expected %v", got, want)
}
if got, want := C.CALL, C.int(7); got != want {
t.Errorf("C.CALL == %v, expected %v", got, want)
}
// Issue 20125.
if got, want := C.SIZE_OF_FOO, 1; got != want {
t.Errorf("C.SIZE_OF_FOO == %v, expected %v", got, want)
}
}
// issue 20129
func test20129(t *testing.T) {
if C.issue20129 != 0 {
t.Fatal("test is broken")
}
C.issue20129Foo()
if C.issue20129 != 1 {
t.Errorf("got %v but expected %v", C.issue20129, 1)
}
C.issue20129Bar()
if C.issue20129 != 2 {
t.Errorf("got %v but expected %v", C.issue20129, 2)
}
}
// issue 20369
func test20369(t *testing.T) {
if C.XUINT64_MAX != math.MaxUint64 {
t.Fatalf("got %v, want %v", uint64(C.XUINT64_MAX), uint64(math.MaxUint64))
}
}
// issue 21668
var issue21668_X = C.x21668
// issue 21708
func test21708(t *testing.T) {
if got, want := C.CAST_TO_INT64, -1; got != want {
t.Errorf("C.CAST_TO_INT64 == %v, expected %v", got, want)
}
}
// issue 21809
func test21809(t *testing.T) {
longVar := C.long(3)
typedefVar := C.MySigned_t(4)
typedefTypedefVar := C.MySigned2_t(5)
// all three should be considered identical to `long`
if ret := C.takes_long(longVar); ret != 9 {
t.Errorf("got %v but expected %v", ret, 9)
}
if ret := C.takes_long(typedefVar); ret != 16 {
t.Errorf("got %v but expected %v", ret, 16)
}
if ret := C.takes_long(typedefTypedefVar); ret != 25 {
t.Errorf("got %v but expected %v", ret, 25)
}
// They should also be identical to the typedef'd type
if ret := C.takes_typedef(longVar); ret != 9 {
t.Errorf("got %v but expected %v", ret, 9)
}
if ret := C.takes_typedef(typedefVar); ret != 16 {
t.Errorf("got %v but expected %v", ret, 16)
}
if ret := C.takes_typedef(typedefTypedefVar); ret != 25 {
t.Errorf("got %v but expected %v", ret, 25)
}
}
// issue 22906
func test22906(t *testing.T) {
var x1 C.jobject = 0 // Note: 0, not nil. That makes sure we use uintptr for these types.
_ = x1
var x2 C.jclass = 0
_ = x2
var x3 C.jthrowable = 0
_ = x3
var x4 C.jstring = 0
_ = x4
var x5 C.jarray = 0
_ = x5
var x6 C.jbooleanArray = 0
_ = x6
var x7 C.jbyteArray = 0
_ = x7
var x8 C.jcharArray = 0
_ = x8
var x9 C.jshortArray = 0
_ = x9
var x10 C.jintArray = 0
_ = x10
var x11 C.jlongArray = 0
_ = x11
var x12 C.jfloatArray = 0
_ = x12
var x13 C.jdoubleArray = 0
_ = x13
var x14 C.jobjectArray = 0
_ = x14
var x15 C.jweak = 0
_ = x15
}
// issue 22958
// Nothing to run, just make sure this compiles.
var Vissue22958 C.issue22958Type
func test23356(t *testing.T) {
if got, want := C.a(), C.int(5); got != want {
t.Errorf("C.a() == %v, expected %v", got, want)
}
if got, want := C.r(), C.int(3); got != want {
t.Errorf("C.r() == %v, expected %v", got, want)
}
}
// issue 23720
func Issue23720F() {
var x C.issue23720A
C.issue23720F(x)
}
// issue 24206
func test24206(t *testing.T) {
if runtime.GOOS != "linux" || runtime.GOARCH != "amd64" {
t.Skipf("skipping on %s/%s", runtime.GOOS, runtime.GOARCH)
}
if l := len(C.GoString(C.dangerousString1())); l != 123 {
t.Errorf("Incorrect string length - got %d, want 123", l)
}
if l := len(C.GoString(C.dangerousString2())); l != 4096+123 {
t.Errorf("Incorrect string length - got %d, want %d", l, 4096+123)
}
}
// issue 25143
func issue25143sum(ns ...C.int) C.int {
total := C.int(0)
for _, n := range ns {
total += n
}
return total
}
func test25143(t *testing.T) {
if got, want := issue25143sum(1, 2, 3), C.int(6); got != want {
t.Errorf("issue25143sum(1, 2, 3) == %v, expected %v", got, want)
}
}
// issue 26066
// Wrong type of constant with GCC 8 and newer.
func test26066(t *testing.T) {
var i = int64(C.issue26066)
if i != -1 {
t.Errorf("got %d, want -1", i)
}
}
// issue 26517
var a C.TypeOne
var b C.TypeTwo
// issue 27660
// Stress the interaction between the race detector and cgo in an
// attempt to reproduce the memory corruption described in #27660.
// The bug was very timing sensitive; at the time of writing this
// test would only trigger the bug about once out of every five runs.
func test27660(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
ints := make([]int, 100)
locks := make([]sync.Mutex, 100)
// Slowly create threads so that ThreadSanitizer is forced to
// frequently resize its SyncClocks.
for i := 0; i < 100; i++ {
go func() {
for ctx.Err() == nil {
// Sleep in C for long enough that it is likely that the runtime
// will retake this goroutine's currently wired P.
C.usleep(1000 /* 1ms */)
runtime.Gosched() // avoid starvation (see #28701)
}
}()
go func() {
// Trigger lots of synchronization and memory reads/writes to
// increase the likelihood that the race described in #27660
// results in corruption of ThreadSanitizer's internal state
// and thus an assertion failure or segfault.
i := 0
for ctx.Err() == nil {
j := rand.Intn(100)
locks[j].Lock()
ints[j]++
locks[j].Unlock()
// needed for gccgo, to avoid creation of an
// unpreemptible "fast path" in this loop. Choice
// of (1<<24) is somewhat arbitrary.
if i%(1<<24) == 0 {
runtime.Gosched()
}
i++
}
}()
time.Sleep(time.Millisecond)
}
}
// issue 28540
func twoargsF() {
v := []string{}
C.twoargs1(C.twoargs2(), C.twoargs3(unsafe.Pointer(&v)))
}
// issue 28545
func issue28545G(p **C.char) {
C.issue28545F(p, -1, (0))
C.issue28545F(p, 2+3, complex(1, 1))
C.issue28545F(p, issue28772Constant, issue28772Constant2)
}
// issue 28772 part 1 - part 2 in testx.go
const issue28772Constant = C.issue28772Constant
// issue 28896
func offset(i int) uintptr {
var pi C.innerPacked
var po C.outerPacked
var ui C.innerUnpacked
var uo C.outerUnpacked
switch i {
case 0:
return unsafe.Offsetof(pi.f2)
case 1:
return unsafe.Offsetof(po.g2)
case 2:
return unsafe.Offsetof(ui.f2)
case 3:
return unsafe.Offsetof(uo.g2)
default:
panic("can't happen")
}
}
func test28896(t *testing.T) {
for i := 0; i < 4; i++ {
c := uintptr(C.offset(C.int(i)))
g := offset(i)
if c != g {
t.Errorf("%d: C: %d != Go %d", i, c, g)
}
}
}
// issue 29383
// cgo's /*line*/ comments failed when inserted after '/',
// because the result looked like a "//" comment.
// No runtime test; just make sure it compiles.
func Issue29383(n, size uint) int {
if ^C.size_t(0)/C.size_t(n) < C.size_t(size) {
return 0
}
return 0
}
// issue 29748
// Error handling a struct initializer that requires pointer checking.
// Compilation test only, nothing to run.
var Vissue29748 = C.f29748(&C.S29748{
nil,
})
func Fissue299748() {
C.f29748(&C.S29748{
nil,
})
}
// issue 29781
var issue29781X struct{ X int }
func issue29781F(...int) int { return 0 }
func issue29781G() {
var p *C.char
C.issue29781F(&p, C.ISSUE29781C+1)
C.issue29781F(nil, (C.int)(
0))
C.issue29781F(&p, (C.int)(0))
C.issue29781F(&p, (C.int)(
0))
C.issue29781F(&p, (C.int)(issue29781X.
X))
}
// issue 30065
func test30065(t *testing.T) {
var a [256]byte
b := []byte("a")
C.memcpy(unsafe.Pointer(&a), unsafe.Pointer(&b[0]), 1)
if a[0] != 'a' {
t.Errorf("&a failed: got %c, want %c", a[0], 'a')
}
b = []byte("b")
C.memcpy(unsafe.Pointer(&a[0]), unsafe.Pointer(&b[0]), 1)
if a[0] != 'b' {
t.Errorf("&a[0] failed: got %c, want %c", a[0], 'b')
}
d := make([]byte, 256)
b = []byte("c")
C.memcpy(unsafe.Pointer(&d[0]), unsafe.Pointer(&b[0]), 1)
if d[0] != 'c' {
t.Errorf("&d[0] failed: got %c, want %c", d[0], 'c')
}
}
// issue 31093
// No runtime test; just make sure it compiles.
func Issue31093() {
C.issue31093F(C.ushort(0))
}
// issue 32579
func test32579(t *testing.T) {
var s [1]C.struct_S32579
C.memset(unsafe.Pointer(&s[0].data[0]), 1, 1)
if s[0].data[0] != 1 {
t.Errorf("&s[0].data[0] failed: got %d, want %d", s[0].data[0], 1)
}
}
// issue 37033, check if cgo.Handle works properly
func testHandle(t *testing.T) {
ch := make(chan int)
for i := 0; i < 42; i++ {
h := cgo.NewHandle(ch)
go func() {
C.cFunc37033(C.uintptr_t(h))
}()
if v := <-ch; issue37033 != v {
t.Fatalf("unexpected receiving value: got %d, want %d", v, issue37033)
}
h.Delete()
}
}
// issue 38649
var issue38649 C.netbsd_gid = 42
// issue 39877
var issue39877 *C.void = nil
// issue 40494
// No runtime test; just make sure it compiles.
func Issue40494() {
C.issue40494(C.enum_Enum40494(C.X_40494), (*C.union_Union40494)(nil))
}
// Issue 45451.
func test45451(t *testing.T) {
var u *C.issue45451
typ := reflect.ValueOf(u).Type().Elem()
// The type is undefined in C so allocating it should panic.
defer func() {
if r := recover(); r == nil {
t.Error("expected panic")
}
}()
_ = reflect.New(typ)
t.Errorf("reflect.New(%v) should have panicked", typ)
}
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