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swig -go: don't use crosscall2 for panicking

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Instead rely only on documented and exported interfaces.
This commit is contained in:
Ian Lance Taylor 2021-09-15 17:56:01 -07:00
commit 6ca5d5d722
2 changed files with 32 additions and 52 deletions
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53
Lib/go/goruntime.swg
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@ -88,52 +88,7 @@ typedef struct { void* array; intgo len; intgo cap; } _goslice_;
%}
#ifndef SWIGGO_GCCGO
/* Boilerplate for C/C++ code when using 6g/8g. This code is compiled
with gcc. */
%insert(runtime) %{
#define swiggo_size_assert_eq(x, y, name) typedef char name[(x-y)*(x-y)*-2+1];
#define swiggo_size_assert(t, n) swiggo_size_assert_eq(sizeof(t), n, swiggo_sizeof_##t##_is_not_##n)
swiggo_size_assert(char, 1)
swiggo_size_assert(short, 2)
swiggo_size_assert(int, 4)
typedef long long swiggo_long_long;
swiggo_size_assert(swiggo_long_long, 8)
swiggo_size_assert(float, 4)
swiggo_size_assert(double, 8)
#ifdef __cplusplus
extern "C" {
#endif
extern void crosscall2(void (*fn)(void *, int), void *, int);
extern char* _cgo_topofstack(void) __attribute__ ((weak));
extern void _cgo_allocate(void *, int);
extern void _cgo_panic(void *, int);
#ifdef __cplusplus
}
#endif
static char *_swig_topofstack() {
if (_cgo_topofstack) {
return _cgo_topofstack();
} else {
return 0;
}
}
static void _swig_gopanic(const char *p) {
struct {
const char *p;
} SWIGSTRUCTPACKED a;
a.p = p;
crosscall2(_cgo_panic, &a, (int) sizeof a);
}
%}
#else
#ifdef SWIGGO_GCCGO
/* Boilerplate for C/C++ code when using gccgo. */
%insert(runtime) %{
@ -154,12 +109,6 @@ extern void _cgo_panic(const char *);
#endif
%insert(runtime) %{
#define SWIG_contract_assert(expr, msg) \
if (!(expr)) { _swig_gopanic(msg); } else
%}
#ifndef SWIGGO_GCCGO
%go_import("unsafe", _ "runtime/cgo")