From 0d5e3f5a4034b6c9312b7c621e25aa4303a00b6f Mon Sep 17 00:00:00 2001 From: Marton Balint Date: Mon, 17 Jun 2024 22:30:26 +0200 Subject: [PATCH] avutil/timestamp: avoid possible FPE when 0 is passed to av_ts_make_time_string2() Signed-off-by: Marton Balint --- libavutil/timestamp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/libavutil/timestamp.c b/libavutil/timestamp.c index 2a3e3012a4..6c231a517d 100644 --- a/libavutil/timestamp.c +++ b/libavutil/timestamp.c @@ -24,7 +24,7 @@ char *av_ts_make_time_string2(char *buf, int64_t ts, AVRational tb) snprintf(buf, AV_TS_MAX_STRING_SIZE, "NOPTS"); } else { double val = av_q2d(tb) * ts; - double log = floor(log10(fabs(val))); + double log = (fpclassify(val) == FP_ZERO ? -INFINITY : floor(log10(fabs(val)))); int precision = (isfinite(log) && log < 0) ? -log + 5 : 6; int last = snprintf(buf, AV_TS_MAX_STRING_SIZE, "%.*f", precision, val); last = FFMIN(last, AV_TS_MAX_STRING_SIZE - 1) - 1;