[PATCH] D12884: [Windows] Symbolize with llvm-symbolizer instead of dbghelp in a self-host

[Reid Kleckner via llvm-commits]

rnk created this revision.
rnk added reviewers: Bigcheese, zturner, chapuni.
rnk added a subscriber: llvm-commits.

llvm-symbolizer understands both PDBs and DWARF, so it is more likely to
succeed at symbolization. If llvm-symbolizer is unavailable, we will
fall back to dbghelp. This also makes our crash traces more similar
between Windows and Linux.

http://reviews.llvm.org/D12884

Files:
  lib/Support/Signals.cpp
  lib/Support/Unix/Signals.inc
  lib/Support/Windows/Signals.inc

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