tree 4736636e2f84f273c9536cb40a572ecbb9265e25
parent 10ea972730a9050a7f2eb19e49bf34bb525cbb01
author Martin Storsjö <martin@martin.st> 1681821755 +0300
committer Copybara-Service <copybara-worker@google.com> 1682193340 -0700

[libunwind] [SEH] Clear DISPATCHER_CONTEXT when initializing a cursor

We only initialize a few fields in DISPATCHER_CONTEXT - don't leave
the rest in an uninitialized state; make sure the whole struct is
in a deterministic state.

This makes nondeterministic failures deterministic, for some cases
relating to forced unwinding on aarch64/arm (which requires filling
in parsing of the xdata for finding the exception handler and LSDA).

Differential Revision: https://reviews.llvm.org/D148660

GitOrigin-RevId: f6320f5e0e63268049086d17e903ee9bc80a996d