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use a copy of args when falling back to vasprintf.

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This commit is contained in:
Joris Vink 2016-11-04 09:16:05 +01:00
parent 552d59248c
commit 5e1cb53f13
1 changed files with 6 additions and 1 deletions
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7
src/buf.c
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@ -82,14 +82,17 @@ void
kore_buf_appendv(struct kore_buf *buf, const char *fmt, va_list args)
{
int l;
va_list copy;
char *b, sb[BUFSIZ];
va_copy(copy, args);
l = vsnprintf(sb, sizeof(sb), fmt, args);
if (l == -1)
fatal("kore_buf_appendv(): vsnprintf error");
if ((size_t)l >= sizeof(sb)) {
l = vasprintf(&b, fmt, args);
l = vasprintf(&b, fmt, copy);
if (l == -1)
fatal("kore_buf_appendv(): error or truncation");
} else {
@ -99,6 +102,8 @@ kore_buf_appendv(struct kore_buf *buf, const char *fmt, va_list args)
kore_buf_append(buf, b, l);
if (b != sb)
free(b);
va_end(copy);
}
void