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-rw-r--r--utils.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/utils.h b/utils.h
index c029ca5..cfa0a0d 100644
--- a/utils.h
+++ b/utils.h
@@ -33,6 +33,7 @@ __attribute__((nonnull))
bool matchstr(const char **str, const char *target);
__attribute__((returns_nonnull))
void *check_nonnull(void *p, const char *err_msg, ...);
+int check_nonnegative(int i, const char *err_msg, ...);
__attribute__((nonnull))
int memicmp(const void *s1, const void *s2, size_t n);
__attribute__((nonnull))