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-rw-r--r--lib/libc/stdtime/strptime.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/libc/stdtime/strptime.c b/lib/libc/stdtime/strptime.c
index c7de35c..51d41ed 100644
--- a/lib/libc/stdtime/strptime.c
+++ b/lib/libc/stdtime/strptime.c
@@ -529,7 +529,7 @@ label:
buf++;
i = 0;
for (len = 4; len > 0; len--) {
- if (isdigit((int)*buf)) {
+ if (isdigit((unsigned char)*buf)) {
i *= 10;
i += *buf - '0';
buf++;
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