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-rw-r--r--stdio-common/vfprintf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/stdio-common/vfprintf.c b/stdio-common/vfprintf.c
index ab7998c248..788290b803 100644
--- a/stdio-common/vfprintf.c
+++ b/stdio-common/vfprintf.c
@@ -1035,7 +1035,7 @@ vfprintf (FILE *s, const CHAR_T *format, va_list ap)
const char *mbs = (const char *) string; \
mbstate_t mbstate; \
\
- len = prec != -1 ? prec : strlen (mbs); \
+ len = prec != -1 ? (size_t) prec : strlen (mbs); \
\
/* Allocate dynamically an array which definitely is long \
enough for the wide character version. */ \