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-rw-r--r--src/common/compat.h5
-rw-r--r--src/common/util.h6
2 files changed, 8 insertions, 3 deletions
diff --git a/src/common/compat.h b/src/common/compat.h
index d2f1fd1295..fc70caf50c 100644
--- a/src/common/compat.h
+++ b/src/common/compat.h
@@ -261,11 +261,12 @@ void tor_munmap_file(tor_mmap_t *handle) ATTR_NONNULL((1));
int tor_snprintf(char *str, size_t size, const char *format, ...)
CHECK_PRINTF(3,4) ATTR_NONNULL((1,3));
int tor_vsnprintf(char *str, size_t size, const char *format, va_list args)
- ATTR_NONNULL((1,3));
+ CHECK_PRINTF(3,0) ATTR_NONNULL((1,3));
int tor_asprintf(char **strp, const char *fmt, ...)
CHECK_PRINTF(2,3);
-int tor_vasprintf(char **strp, const char *fmt, va_list args);
+int tor_vasprintf(char **strp, const char *fmt, va_list args)
+ CHECK_PRINTF(2,0);
const void *tor_memmem(const void *haystack, size_t hlen, const void *needle,
size_t nlen) ATTR_PURE ATTR_NONNULL((1,3));
diff --git a/src/common/util.h b/src/common/util.h
index b9db25ca73..d4771562ee 100644
--- a/src/common/util.h
+++ b/src/common/util.h
@@ -211,7 +211,11 @@ const char *escaped(const char *string);
struct smartlist_t;
void wrap_string(struct smartlist_t *out, const char *string, size_t width,
const char *prefix0, const char *prefixRest);
-int tor_vsscanf(const char *buf, const char *pattern, va_list ap);
+int tor_vsscanf(const char *buf, const char *pattern, va_list ap)
+#ifdef __GNUC__
+ __attribute__((format(scanf, 2, 0)))
+#endif
+ ;
int tor_sscanf(const char *buf, const char *pattern, ...)
#ifdef __GNUC__
__attribute__((format(scanf, 2, 3)))