cmd/cgo: add missing parameter list for function _cgo_wait_runtime_init_done

Fixes #29879

Change-Id: Id2061a5eab67bb90a8116dc4f16073be1c9a09a9
GitHub-Last-Rev: 186863ab6aa9481744f276a7afbd87bd53c9f863
GitHub-Pull-Request: golang/go#29900
Reviewed-on: https://go-review.googlesource.com/c/go/+/159178Reviewed-by: Philipp Stephani <phst@google.com>
Reviewed-by: Emmanuel Odeke <emm.odeke@gmail.com>
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Emmanuel Odeke <emm.odeke@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/cgo/doc.go

@@ -710,7 +710,7 @@ _cgo_main.c:
 
 	int main() { return 0; }
 	void crosscall2(void(*fn)(void*, int, uintptr_t), void *a, int c, uintptr_t ctxt) { }
-	uintptr_t _cgo_wait_runtime_init_done() { return 0; }
+	uintptr_t _cgo_wait_runtime_init_done(void) { return 0; }
 	void _cgo_release_context(uintptr_t ctxt) { }
 	char* _cgo_topofstack(void) { return (char*)0; }
 	void _cgo_allocate(void *a, int c) { }

src/cmd/cgo/out.go

@@ -59,14 +59,14 @@ func (p *Package) writeDefs() {
 	fmt.Fprintf(fm, "int main() { return 0; }\n")
 	if *importRuntimeCgo {
 		fmt.Fprintf(fm, "void crosscall2(void(*fn)(void*, int, __SIZE_TYPE__), void *a, int c, __SIZE_TYPE__ ctxt) { }\n")
-		fmt.Fprintf(fm, "__SIZE_TYPE__ _cgo_wait_runtime_init_done() { return 0; }\n")
+		fmt.Fprintf(fm, "__SIZE_TYPE__ _cgo_wait_runtime_init_done(void) { return 0; }\n")
 		fmt.Fprintf(fm, "void _cgo_release_context(__SIZE_TYPE__ ctxt) { }\n")
 		fmt.Fprintf(fm, "char* _cgo_topofstack(void) { return (char*)0; }\n")
 	} else {
 		// If we're not importing runtime/cgo, we *are* runtime/cgo,
 		// which provides these functions. We just need a prototype.
 		fmt.Fprintf(fm, "void crosscall2(void(*fn)(void*, int, __SIZE_TYPE__), void *a, int c, __SIZE_TYPE__ ctxt);\n")
-		fmt.Fprintf(fm, "__SIZE_TYPE__ _cgo_wait_runtime_init_done();\n")
+		fmt.Fprintf(fm, "__SIZE_TYPE__ _cgo_wait_runtime_init_done(void);\n")
 		fmt.Fprintf(fm, "void _cgo_release_context(__SIZE_TYPE__);\n")
 	}
 	fmt.Fprintf(fm, "void _cgo_allocate(void *a, int c) { }\n")
@@ -784,7 +784,7 @@ func (p *Package) writeExports(fgo2, fm, fgcc, fgcch io.Writer) {
 	fmt.Fprintf(fgcc, "#pragma GCC diagnostic ignored \"-Waddress-of-packed-member\"\n")
 
 	fmt.Fprintf(fgcc, "extern void crosscall2(void (*fn)(void *, int, __SIZE_TYPE__), void *, int, __SIZE_TYPE__);\n")
-	fmt.Fprintf(fgcc, "extern __SIZE_TYPE__ _cgo_wait_runtime_init_done();\n")
+	fmt.Fprintf(fgcc, "extern __SIZE_TYPE__ _cgo_wait_runtime_init_done(void);\n")
 	fmt.Fprintf(fgcc, "extern void _cgo_release_context(__SIZE_TYPE__);\n\n")
 	fmt.Fprintf(fgcc, "extern char* _cgo_topofstack(void);")
 	fmt.Fprintf(fgcc, "%s\n", tsanProlog)
@@ -1924,5 +1924,5 @@ static void GoInit(void) {
 		runtime_iscgo = 1;
 }
 
-extern __SIZE_TYPE__ _cgo_wait_runtime_init_done() __attribute__ ((weak));
+extern __SIZE_TYPE__ _cgo_wait_runtime_init_done(void) __attribute__ ((weak));
 `

src/runtime/cgo/gcc_libinit.c

@@ -32,7 +32,7 @@ x_cgo_sys_thread_create(void* (*func)(void*), void* arg) {
 }
 
 uintptr_t
-_cgo_wait_runtime_init_done() {
+_cgo_wait_runtime_init_done(void) {
 	void (*pfn)(struct context_arg*);
 
 	pthread_mutex_lock(&runtime_init_mu);

src/runtime/cgo/gcc_libinit_windows.c

@@ -70,7 +70,7 @@ _cgo_is_runtime_initialized() {
 }
 
 uintptr_t
-_cgo_wait_runtime_init_done() {
+_cgo_wait_runtime_init_done(void) {
 	void (*pfn)(struct context_arg*);
 
 	 _cgo_maybe_run_preinit();

src/runtime/cgo/libcgo.h

@@ -61,7 +61,7 @@ void _cgo_sys_thread_start(ThreadStart *ts);
  * If runtime.SetCgoTraceback is used to set a context function,
  * calls the context function and returns the context value.
  */
-uintptr_t _cgo_wait_runtime_init_done();
+uintptr_t _cgo_wait_runtime_init_done(void);
 
 /*
  * Call fn in the 6c world.