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-rw-r--r--src/stdio/vfwprintf.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/stdio/vfwprintf.c b/src/stdio/vfwprintf.c
index 281f4e56..deff9828 100644
--- a/src/stdio/vfwprintf.c
+++ b/src/stdio/vfwprintf.c
@@ -296,6 +296,7 @@ static int wprintf_core(FILE *f, const wchar_t *fmt, va_list *ap, union arg *nl_
case 'm':
arg.p = strerror(errno);
case 's':
+ if (!arg.p) arg.p = "(null)";
bs = arg.p;
if (p<0) p = INT_MAX;
for (i=l=0; l<p && (i=mbtowc(&wc, bs, MB_LEN_MAX))>0; bs+=i, l++);