fortify-headers

commit e892e1188129de42ea7068dbaee85e8bc62f7170
parent 62199030394acd30ab44bc21af7078ae993fd149
Author: jvoisin <julien.voisin@dustri.org>
Date:   Sat,  8 Jul 2023 21:49:15 +0200

Add tests for memcpy overflow/underflow

Diffstat:
M
tests/Makefile
 | 
2
++
A
tests/test_memcpy_overwrite_over.c
 | 
15
+++++++++++++++
A
tests/test_memcpy_overwrite_under.c
 | 
15
+++++++++++++++

3 files changed, 32 insertions(+), 0 deletions(-)
diff --git a/tests/Makefile b/tests/Makefile
@@ -13,6 +13,8 @@ TARGETS= \
 	test_memcpy_dynamic_write    \
 	test_memcpy_static_read      \
 	test_memcpy_dynamic_read     \
+	test_memcpy_overwrite_over   \
+	test_memcpy_overwrite_under  \
         test_mempcpy_static_write    \
 	test_mempcpy_dynamic_write   \
 	test_mempcpy_static_read     \
diff --git a/tests/test_memcpy_overwrite_over.c b/tests/test_memcpy_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
+  memcpy(buffer+1, buffer, 5);
+  CHK_FAIL_END
+
+  puts(buffer);
+  return ret;
+}
diff --git a/tests/test_memcpy_overwrite_under.c b/tests/test_memcpy_overwrite_under.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
+  memcpy(buffer-1, buffer, 5);
+  CHK_FAIL_END
+
+  puts(buffer);
+  return ret;
+}