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Can't use the same va_list twice, from Emanuele Giaquinta.

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This commit is contained in:
Nicholas Marriott
2011-07-25 09:56:43 +00:00
parent 5339b8ce3a
commit e9ebdac3dd
1 changed files with 4 additions and 1 deletions
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5
compat/asprintf.c
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@ -44,12 +44,15 @@ int
vasprintf(char **ret, const char *fmt, va_list ap) vasprintf(char **ret, const char *fmt, va_list ap)
{ {
int n; int n;
va_list ap2;
va_copy(ap2, ap);
if ((n = vsnprintf(NULL, 0, fmt, ap)) < 0) if ((n = vsnprintf(NULL, 0, fmt, ap)) < 0)
goto error; goto error;
*ret = xmalloc(n + 1); *ret = xmalloc(n + 1);
if ((n = vsnprintf(*ret, n + 1, fmt, ap)) < 0) { if ((n = vsnprintf(*ret, n + 1, fmt, ap2)) < 0) {
xfree(*ret); xfree(*ret);
goto error; goto error;
} }