[ASan] Disable aligned_alloc-alignment.cc test on gcc.

This check "CHECK: {{#0 0x.* in .*aligned_alloc}}" fails on ppc64be, gcc
build. Disabling the test for gcc for now.

Differential Revision: https://reviews.llvm.org/D44404

llvm-svn: 328741

compiler-rt/test/asan/TestCases/Linux/aligned_alloc-alignment.cc

@@ -4,6 +4,9 @@
 
 // UNSUPPORTED: android
 
+// FIXME(alekseyshl): Fix this test under GCC.
+// REQUIRES: Clang
+
 #include <stdio.h>
 #include <stdlib.h>