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html: fix handling of null byte

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A return value of `len` or more means that the output was truncated.

Signed-off-by: Peter Prohaska <pitrp@web.de>
Signed-off-by: Christian Hesse <mail@eworm.de>
This commit is contained in:
Peter Prohaska 2020-11-11 22:16:21 +01:00 • committed by Jason A. Donenfeld
parent 4e4b30effb
commit ce2062d9e2
1 changed files with 1 additions and 1 deletions
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2
html.c
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@ -59,7 +59,7 @@ char *fmt(const char *format, ...)
va_start(args, format);
len = vsnprintf(buf[bufidx], sizeof(buf[bufidx]), format, args);
va_end(args);
if (len > sizeof(buf[bufidx])) {
if (len >= sizeof(buf[bufidx])) {
fprintf(stderr, "[html.c] string truncated: %s\n", format);
exit(1);
}