fortify-headers

commit 28d61f4202a73fa39d07774c66e1404858adfee9
parent 79447cbb8dc30e2335e3bb186de8e1172b3dff90
Author: jvoisin <julien.voisin@dustri.org>
Date:   Thu, 22 Jun 2023 18:33:53 +0200

Add a test for `poll`

Diffstat:
M
include/poll.h
 | 
4
++--
M
tests/Makefile
 | 
1
+
A
tests/test_poll.c
 | 
14
++++++++++++++

3 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/include/poll.h b/include/poll.h
@@ -32,7 +32,7 @@ extern "C" {
 
 _FORTIFY_FN(poll) int poll(struct pollfd *__f, nfds_t __n, int __s)
 {
-	__typeof__(sizeof 0) __b = __bos(__f, 0);
+	size_t __b = __bos(__f, 0);
 
 	if (__n > __b / sizeof(struct pollfd))
 		__builtin_trap();
@@ -44,7 +44,7 @@ _FORTIFY_FN(poll) int poll(struct pollfd *__f, nfds_t __n, int __s)
 _FORTIFY_FN(ppoll) int ppoll(struct pollfd *__f, nfds_t __n, const struct timespec *__s,
                              const sigset_t *__m)
 {
-	__typeof__(sizeof 0) __b = __bos(__f, 0);
+	size_t __b = __bos(__f, 0);
 
 	if (__n > __b / sizeof(struct pollfd))
 		__builtin_trap();
diff --git a/tests/Makefile b/tests/Makefile
@@ -31,6 +31,7 @@ TARGETS=test_memcpy_static_write     \
 	test_stpncpy_overwrite_under \
 	test_stpncpy_static_write    \
 	test_getcwd                  \
+	test_poll                    \
 
 .SILENT:
 
diff --git a/tests/test_poll.c b/tests/test_poll.c
@@ -0,0 +1,14 @@
+#include "common.h"
+
+#include <poll.h>
+
+int main(int argc, char** argv) {
+  struct pollfd buffer[12] = {0};
+
+  CHK_FAIL_START
+  poll(buffer, 14, NULL);
+  CHK_FAIL_END
+
+  puts(buffer);
+  return ret;
+}