[GWP-ASan] Update backtrace function signature.

Summary:
Updates the function signature and comments for backtracing (and printing
backtraces). This update brings GWP-ASan in line with future requirements for
stack frame compression, wherein the length of the trace is provided
explicitly, rather than relying on nullptr-termination.

Reviewers: vlad.tsyrklevich

Reviewed By: vlad.tsyrklevich

Subscribers: #sanitizers, llvm-commits, morehouse

Tags: #sanitizers, #llvm

Differential Revision: https://reviews.llvm.org/D66099

llvm-svn: 368619
GitOrigin-RevId: 352d1b59c0c892f4d642a7355e0dee664bb19479
Change-Id: I33753753f2cac61fa5c9653a39041e8ab6b1ea90
6 files changed
tree: 491ca7ee9b4d96e6df18ca4f8f1e026e9d51ed42
  1. gwp_asan/
  2. LICENSE.TXT