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Merge pull request #15478 from FRRouting/mergify/bp/dev/10.0/pr-15470

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lib: fix __darr_in_vsprintf (backport #15470)
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Igor Ryzhov 2024-03-05 11:23:37 +02:00 committed by GitHub
commit 5e27a213d8
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1 changed files with 5 additions and 2 deletions
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lib/darr.c
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@ -58,6 +58,7 @@ char *__darr_in_vsprintf(char **sp, bool concat, const char *fmt, va_list ap)
size_t inlen = concat ? darr_strlen(*sp) : 0;
size_t capcount = strlen(fmt) + MIN(inlen + 64, 128);
ssize_t len;
va_list ap_copy;
darr_ensure_cap(*sp, capcount);
@ -68,10 +69,12 @@ char *__darr_in_vsprintf(char **sp, bool concat, const char *fmt, va_list ap)
if (darr_len(*sp) == 0)
*darr_append(*sp) = 0;
again:
len = vsnprintf(darr_last(*sp), darr_avail(*sp), fmt, ap);
va_copy(ap_copy, ap);
len = vsnprintf(darr_last(*sp), darr_avail(*sp) + 1, fmt, ap_copy);
va_end(ap_copy);
if (len < 0)
darr_in_strcat(*sp, fmt);
else if ((size_t)len < darr_avail(*sp))
else if ((size_t)len <= darr_avail(*sp))
_darr_len(*sp) += len;
else {
darr_ensure_cap(*sp, darr_len(*sp) + (size_t)len);