[llvm] [XRay] Add bounds check before memcpy in readBinaryFormatHeader (PR #178499)

[via llvm-commits]

================
@@ -12,8 +12,8 @@
 # LLVM monorepo, and we make it a no-op unless the libc++ pipeline needs to be triggered.
 #
 
-# Set by buildkite
-: ${BUILDKITE_PULL_REQUEST_BASE_BRANCH:=}
+# Set by buildkite (may be unset for cross-fork PRs)
+: ${BUILDKITE_PULL_REQUEST_BASE_BRANCH:=main}
----------------
dive2tech wrote:

OK. No problem.

https://github.com/llvm/llvm-project/pull/178499