[ubsan]: temporarily disable print_stack_trace.cc test

Some problems with ARM stack unwinding led to inaccurate stack traces being
printed, which caused this test to fail on
http://lab.llvm.org:8011/builders/clang-cmake-thumbv7-a15-full-sh

llvm-svn: 302239

Author: ramosian-glider

compiler-rt/test/ubsan/TestCases/Misc/Linux/print_stack_trace.cc

@@ -1,6 +1,9 @@
 // RUN: %clangxx -fsanitize=undefined -O0 %s -o %t && UBSAN_OPTIONS=stack_trace_format=DEFAULT:fast_unwind_on_fatal=1 %run %t 2>&1 | FileCheck %s
 // RUN: %clangxx -fsanitize=undefined -O0 %s -o %t && UBSAN_OPTIONS=stack_trace_format=DEFAULT:fast_unwind_on_fatal=0 %run %t 2>&1 | FileCheck %s
 
+// This test is temporarily disabled due to broken unwinding on ARM.
+// UNSUPPORTED: -linux-
+
 // The test doesn't pass on Darwin in UBSan-TSan configuration, because TSan is
 // using the slow unwinder which is not supported on Darwin. The test should
 // be universal after landing of https://reviews.llvm.org/D32806.