Add tests for strncpy and handle overlapping buffers there

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/test_strncpy_overwrite_over.c b/tests/test_strncpy_overwrite_over.c
new file mode 100644
index 0000000..d584bcc
--- /dev/null
+++ b/tests/test_strncpy_overwrite_over.c
@@ -0,0 +1,15 @@
+#include "common.h"
+
+#include <string.h>
+
+int main(int argc, char** argv) {
+  char buffer[9] = {'A', 'A', 'A', 'A', 'B', 'B', 'B', 'B', '\0'};
+  puts(buffer);
+
+  CHK_FAIL_START
+  strncpy(buffer+1, buffer, 5);
+  CHK_FAIL_END
+
+  puts(buffer);
+  return ret;
+}