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-rw-r--r--Src/utils.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/Src/utils.c b/Src/utils.c
index 32f600858..46cf7bcf6 100644
--- a/Src/utils.c
+++ b/Src/utils.c
@@ -3336,7 +3336,7 @@ morefmt:
case '.':
{
long fnsec = nsec;
- if (digs > 9)
+ if (digs < 0 || digs > 9)
digs = 9;
if (ztrftimebuf(&bufsize, digs))
return -1;