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Give V8 a chance to handle faults in stack dump crash handler
V8 has the ability to use guard regions and signal handlers to do WebAssembly bounds checks on x86_64 Linux. This requires any in-process signal handlers to let V8 try to handle the signal first. This CL adds support for this to the stack dump signal handler. Bug: chromium:722585, v8:5277 Change-Id: Iccb72b66118c743f78b3ddbaf7887728b213ddb2 Reviewed-on: https://chromium-review.googlesource.com/541956 Reviewed-by: Jochen Eisinger <jochen@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Eric Holk <eholk@chromium.org> Cr-Commit-Position: refs/heads/master@{#487153}
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