Default to disabling the libunwind frameheader cache.
Although it works fine with glibc, as currently implemented the
frameheader cache is incompatible with certain platforms with
slightly different locking semantics inside dl_iterate_phdr.
Therefore only enable it when it is turned on explicitly with
a configure-time option.
Differential Revision: https://reviews.llvm.org/D86163
Cr-Mirrored-From: https://chromium.googlesource.com/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: a20f5fe70810e0a768c1814d69d10862965c21e4
diff --git a/test/frameheadercache_test.pass.cpp b/test/frameheadercache_test.pass.cpp
index 9397e70..ebbc004 100644
--- a/test/frameheadercache_test.pass.cpp
+++ b/test/frameheadercache_test.pass.cpp
@@ -6,7 +6,7 @@
// The frame header cache should work fine for other architectures,
// but the #ifdefs end up being even more complicated than this.
-#ifdef __x86_64__
+#if defined(__x86_64__) && defined(_LIBUNWIND_USE_FRAME_HEADER_CACHE)
// This #if chain is ugly, but see the comments in AddressSpace.hpp for
// the reasoning.