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authorJakob Kaivo <jkk@ung.org>2024-01-31 13:24:56 -0500
committerJakob Kaivo <jkk@ung.org>2024-01-31 13:24:56 -0500
commit4b43b375b7abae22070cd86bfc26a8222233150e (patch)
tree6ff165b17879e80300cb6d05b5537a65c82c2dc7 /src/stdio/vsnprintf.c
parentab3c589cd14c2b7efd79c89fd75ea35edcf9edff (diff)
check for overlapping pointers
Diffstat (limited to 'src/stdio/vsnprintf.c')
-rw-r--r--src/stdio/vsnprintf.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/stdio/vsnprintf.c b/src/stdio/vsnprintf.c
index 3fa18cf4..87deb169 100644
--- a/src/stdio/vsnprintf.c
+++ b/src/stdio/vsnprintf.c
@@ -1,10 +1,13 @@
#include <stdio.h>
#include <stdarg.h>
+#include <string.h>
#include "_stdio.h"
int vsnprintf(char * restrict s, size_t n, const char *format, va_list arg)
{
SIGNAL_SAFE(0);
+ ASSERT_NOOVERLAP(s, n, format, strlen(format));
+
struct io_options opt = {
.fnname = __func__,
.string = s,