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Save the va_list so it can be reused if needed. 

The second call to vsnprintf() needs to have a copy of the argument list
so it can run correctly. On some system vsnprintf() destorys the original
argument list.
This commit is contained in:
Cary R 2012-08-30 20:00:59 -07:00
parent 9d5f438872
commit 5794098aa4
1 changed files with 4 additions and 2 deletions
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6
vvp/vpi_mcd.cc
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@ -180,6 +180,8 @@ vpi_mcd_vprintf(PLI_UINT32 mcd, const char*fmt, va_list ap)
char *buf_ptr = buffer;
int rc = 0;
bool need_free = false;
va_list save_ap;
va_copy(save_ap, ap);
if (!IS_MCD(mcd)) return 0;
@ -206,9 +208,9 @@ vpi_mcd_vprintf(PLI_UINT32 mcd, const char*fmt, va_list ap)
buf_ptr = (char *)malloc(rc + 1);
need_free = true;
#ifdef __MINGW32__
rc = _vsnprintf(buf_ptr, rc+1, fmt, ap);
rc = _vsnprintf(buf_ptr, rc+1, fmt, save_ap);
#else
rc = vsnprintf(buf_ptr, rc+1, fmt, ap);
rc = vsnprintf(buf_ptr, rc+1, fmt, save_ap);
#endif
}