[PATCH] D45756: [XRay][profiler] Part 1: XRay Allocator and Array Implementations

[Reid Kleckner via Phabricator via llvm-commits]

rnk added subscribers: thakis, rnk.
rnk added a comment.

Your usage of constexpr appears to crash GCC 4.8.5:

  [871/917] Building CXX object lib/xray/CMakeFiles/RTXrayPROFILER.x86_64.dir/xray_profile_collector.cc.o
  FAILED: lib/xray/CMakeFiles/RTXrayPROFILER.x86_64.dir/xray_profile_collector.cc.o 
  /b/c/b/ToTLinux/src/third_party/llvm-build-tools/gcc485precise/bin/g++  ...  /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_profile_collector.cc
  In file included from /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_segmented_array.h:20:0,
                   from /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_function_call_trie.h:19,
                   from /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_profile_collector.h:21,
                   from /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_profile_collector.cc:15:
  /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_allocator.h: In instantiation of ‘__xray::Allocator<320ul>::BlockLink __xray::Allocator<320ul>::NullLink’:
  /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_allocator.h:133:31:   required from ‘__xray::Allocator<N>::~Allocator() [with long unsigned int N = 320ul]’
  /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_function_call_trie.h:202:43:   required from here
  /b/c/b/ToTLinux/src/third_party/llvm/compiler-rt/lib/xray/xray_allocator.h:57:10: internal compiler error: Segmentation fault
     struct BlockLink {
            ^
  Please submit a full bug report,
  with preprocessed source if appropriate.
  See <http://gcc.gnu.org/bugs.html> for instructions.

I will try to find a workaround. @thakis


Repository:
  rL LLVM

https://reviews.llvm.org/D45756