1 files changed, 68 insertions, 0 deletions
diff --git a/sys/contrib/libsodium/test/default/sodium_utils3.c b/sys/contrib/libsodium/test/default/sodium_utils3.c
new file mode 100644
index 000000000000..3f2b600e7940
--- /dev/null
+++ b/sys/contrib/libsodium/test/default/sodium_utils3.c
@@ -0,0 +1,68 @@
+
+#include <stdlib.h>
+#include <sys/types.h>
+
+#include <limits.h>
+#include <signal.h>
+
+#define TEST_NAME "sodium_utils3"
+#include "cmptest.h"
+
+#ifdef __SANITIZE_ADDRESS__
+# warning The sodium_utils3 test is expected to fail with address sanitizer
+#endif
+
+__attribute__((noreturn)) static void
+segv_handler(int sig)
+{
+    (void) sig;
+
+    printf("Intentional segfault / bus error caught\n");
+    printf("OK\n");
+#ifdef SIGSEGV
+    signal(SIGSEGV, SIG_DFL);
+#endif
+#ifdef SIGBUS
+    signal(SIGBUS, SIG_DFL);
+#endif
+#ifdef SIGABRT
+    signal(SIGABRT, SIG_DFL);
+#endif
+    exit(0);
+}
+
+int
+main(void)
+{
+    void * buf;
+    size_t size;
+
+#ifdef SIGSEGV
+    signal(SIGSEGV, segv_handler);
+#endif
+#ifdef SIGBUS
+    signal(SIGBUS, segv_handler);
+#endif
+#ifdef SIGABRT
+    signal(SIGABRT, segv_handler);
+#endif
+    size = 1U + randombytes_uniform(100000U);
+    buf  = sodium_malloc(size);
+    assert(buf != NULL);
+
+/* old versions of asan emit a warning because they don't support mlock*() */
+#ifndef __SANITIZE_ADDRESS__
+    sodium_mprotect_noaccess(buf);
+    sodium_mprotect_readwrite(buf);
+#endif
+
+#if defined(HAVE_CATCHABLE_SEGV) && !defined(__EMSCRIPTEN__) && !defined(__SANITIZE_ADDRESS__)
+    sodium_memzero(((unsigned char *) buf) - 8, 8U);
+    sodium_mprotect_readonly(buf);
+    sodium_free(buf);
+    printf("Underflow not caught\n");
+#else
+    segv_handler(0);
+#endif
+    return 0;
+}