tree 767240eaecfe77c004945c0df553fcab923f875b
parent 1702b1443e465162041c9679bfa5aba9ffcfc252
author Mitch Phillips <mitchphillips@outlook.com> 1562083492 +0000
committer Copybara-Service <copybara-worker@google.com> 1601491328 -0700

[GWP-ASan] Add generic unwinders and structure backtrace output.

Summary:
Adds two flavours of generic unwinder and all the supporting cruft. If the
supporting allocator is okay with bringing in sanitizer_common, they can use
the fast frame-pointer based unwinder from sanitizer_common. Otherwise, we also
provide the backtrace() libc-based unwinder as well. Of course, the allocator
can always specify its own unwinder and unwinder-symbolizer.

The slightly changed output format is exemplified in the first comment on this
patch. It now better incorporates backtrace information, and displays
allocation details on the second line.

Reviewers: eugenis, vlad.tsyrklevich

Reviewed By: eugenis, vlad.tsyrklevich

Subscribers: srhines, kubamracek, mgorny, cryptoad, #sanitizers, llvm-commits, morehouse

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D63841

llvm-svn: 364941
GitOrigin-RevId: 7339ca278c3fdb1d932b776005b2687ec11eadae