diff options
| -rw-r--r-- | lib/sanitizer_common/sanitizer_common_interceptors.inc | 2 | ||||
| -rw-r--r-- | test/sanitizer_common/TestCases/fopen_nullptr.c | 6 |
2 files changed, 7 insertions, 1 deletions
diff --git a/lib/sanitizer_common/sanitizer_common_interceptors.inc b/lib/sanitizer_common/sanitizer_common_interceptors.inc index e56f6bf7e..4639ddc92 100644 --- a/lib/sanitizer_common/sanitizer_common_interceptors.inc +++ b/lib/sanitizer_common/sanitizer_common_interceptors.inc @@ -4769,7 +4769,7 @@ INTERCEPTOR(int, __woverflow, __sanitizer_FILE *fp, int ch) { INTERCEPTOR(__sanitizer_FILE *, fopen, const char *path, const char *mode) { void *ctx; COMMON_INTERCEPTOR_ENTER(ctx, fopen, path, mode); - COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, REAL(strlen)(path) + 1); COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, REAL(strlen)(mode) + 1); __sanitizer_FILE *res = REAL(fopen)(path, mode); COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); diff --git a/test/sanitizer_common/TestCases/fopen_nullptr.c b/test/sanitizer_common/TestCases/fopen_nullptr.c new file mode 100644 index 000000000..960dda334 --- /dev/null +++ b/test/sanitizer_common/TestCases/fopen_nullptr.c @@ -0,0 +1,6 @@ +// Check that fopen(NULL, "r") is ok. +// RUN: %clang -O2 %s -o %t && %run %t +#include <stdio.h> +const char *fn = NULL; +FILE *f; +int main() { f = fopen(fn, "r"); } |