vendor/compiler-rt/compiler-rt-trunk-r321017

1 files changed, 40 insertions, 0 deletions

diff --git a/test/scudo/preinit.c b/test/scudo/preinit.c
new file mode 100644
index 0000000000000..792b2368e37d0
--- /dev/null
+++ b/test/scudo/preinit.c
@@ -0,0 +1,40 @@
+// RUN: %clang_scudo %s -o %t
+// RUN: %run %t 2>&1
+
+// Verifies that calling malloc in a preinit_array function succeeds, and that
+// the resulting pointer can be freed at program termination.
+
+// On some Android versions, calling mmap() from a preinit function segfaults.
+// It looks like __mmap2.S ends up calling a NULL function pointer.
+// UNSUPPORTED: android
+
+#include <assert.h>
+#include <stdlib.h>
+#include <string.h>
+
+static void *global_p = NULL;
+
+void __init(void) {
+  global_p = malloc(1);
+  if (!global_p)
+    exit(1);
+}
+
+void __fini(void) {
+  if (global_p)
+    free(global_p);
+}
+
+int main(int argc, char **argv)
+{
+  void *p = malloc(1);
+  assert(p);
+  free(p);
+
+  return 0;
+}
+
+__attribute__((section(".preinit_array"), used))
+  void (*__local_preinit)(void) = __init;
+__attribute__((section(".fini_array"), used))
+  void (*__local_fini)(void) = __fini;