[Bug testsuite/70520] Incorrect child stack alignment in c-c++-common/asan/clone-test-1.c

[hjl.tools at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70520

H.J. Lu <hjl.tools at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2016-04-05
     Ever confirmed|0                           |1

--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> ---
It has been fixed upstream by

commit 5e263ef18766b562a05aa6736d6c7ea3c8af3b4e
Author: Reid Kleckner <r...@google.com>
Date:   Mon Apr 4 18:27:32 2016 +0000

    Apply suggestion from HJ Lu to avoid misaligned stack in test

    Fixes PR27191

    git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@265322
91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/asan/TestCases/Linux/clone_test.cc
b/test/asan/TestCases/Linux/clone_test.cc
index e9c1f16..f6eb261 100644
--- a/test/asan/TestCases/Linux/clone_test.cc
+++ b/test/asan/TestCases/Linux/clone_test.cc
@@ -22,7 +22,7 @@ int Child(void *arg) {

 int main(int argc, char **argv) {
   const int kStackSize = 1 << 20;
-  char child_stack[kStackSize + 1];
+  char __attribute__((aligned(16))) child_stack[kStackSize + 1];
   char *sp = child_stack + kStackSize;  // Stack grows down.
   printf("Parent: %p\n", sp);
   pid_t clone_pid = clone(Child, sp, CLONE_FILES | CLONE_VM, NULL);