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37 lines
891 B
C
37 lines
891 B
C
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/* ------------------------------------------------------------- */
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/* function to get a stack backtrace on demand with a message */
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#include <stdio.h>
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#include <string.h>
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int (*__rt_error)(void*, void*, const char *, va_list);
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#ifdef _WIN32
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# define DLL_EXPORT __declspec(dllexport)
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#else
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# define DLL_EXPORT
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#endif
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DLL_EXPORT int tcc_backtrace(const char *fmt, ...)
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{
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va_list ap;
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int ret;
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if (__rt_error) {
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void *fp = __builtin_frame_address(1);
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void *ip = __builtin_return_address(0);
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va_start(ap, fmt);
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ret = __rt_error(fp, ip, fmt, ap);
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va_end(ap);
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} else {
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const char *p;
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if (fmt[0] == '^' && (p = strchr(fmt + 1, fmt[0])))
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fmt = p + 1;
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va_start(ap, fmt);
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ret = vfprintf(stderr, fmt, ap);
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va_end(ap);
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fprintf(stderr, "\n"), fflush(stderr);
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}
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return ret;
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}
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