[PATCH] D73809: eSupport] Don't modify the current EH context during stack unwinding
Reid Kleckner via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Fri Jan 31 17:12:03 PST 2020
This revision was automatically updated to reflect the committed changes.
Closed by commit rGb074acb82f7e: [Support] Don't modify the current EH context during stack unwinding (authored by rnk).
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D73809/new/
https://reviews.llvm.org/D73809
Files:
llvm/lib/Support/Windows/Signals.inc
Index: llvm/lib/Support/Windows/Signals.inc
===================================================================
--- llvm/lib/Support/Windows/Signals.inc
+++ llvm/lib/Support/Windows/Signals.inc
@@ -820,7 +820,13 @@
<< "\n";
}
- LocalPrintStackTrace(llvm::errs(), ep ? ep->ContextRecord : nullptr);
+ // Stack unwinding appears to modify the context. Copy it to preserve the
+ // caller's context.
+ CONTEXT ContextCopy;
+ if (ep)
+ memcpy(&ContextCopy, ep->ContextRecord, sizeof(ContextCopy));
+
+ LocalPrintStackTrace(llvm::errs(), ep ? &ContextCopy : nullptr);
return EXCEPTION_EXECUTE_HANDLER;
}
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