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-rw-r--r--src/shared/util.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/shared/util.c b/src/shared/util.c
index a7aec5c54f..d93a9680fd 100644
--- a/src/shared/util.c
+++ b/src/shared/util.c
@@ -6659,6 +6659,7 @@ int bind_remount_recursive(const char *prefix, bool ro) {
}
int fflush_and_check(FILE *f) {
+ assert(f);
errno = 0;
fflush(f);