llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT--> @llvm/pr-subscribers-llvm-mc Author: None (llvmbot) <details> <summary>Changes</summary> Backport d064f395af7ac226dec3f8e90516a26e96e2acf1 Requested by: @<!-- -->nikic --- Full diff: https://github.com/llvm/llvm-project/pull/177907.diff 1 Files Affected: - (modified) llvm/lib/MC/MCObjectStreamer.cpp (+2-1) ``````````diff diff --git a/llvm/lib/MC/MCObjectStreamer.cpp b/llvm/lib/MC/MCObjectStreamer.cpp index 5fd30eccb45c5..0c64d89d7b491 100644 --- a/llvm/lib/MC/MCObjectStreamer.cpp +++ b/llvm/lib/MC/MCObjectStreamer.cpp @@ -111,7 +111,8 @@ void MCObjectStreamer::appendContents(ArrayRef<char> Contents) { assert(FragSpace >= Contents.size()); // As this is performance-sensitive code, explicitly use std::memcpy. // Optimization of std::copy to memmove is unreliable. - std::memcpy(getCurFragEnd(), Contents.begin(), Contents.size()); + if (!Contents.empty()) + std::memcpy(getCurFragEnd(), Contents.begin(), Contents.size()); CurFrag->FixedSize += Contents.size(); FragSpace -= Contents.size(); } `````````` </details> https://github.com/llvm/llvm-project/pull/177907 _______________________________________________ llvm-branch-commits mailing list [email protected] https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
