[ItaniumDemangle] Fix libcxxabi OutputBuffer::prepend for empty inputs #138656
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
See llvm#138564 for details.
|
@llvm/pr-subscribers-libcxxabi Author: Dmitry Vasilyev (slydiman) ChangesSee #138564 for details. Full diff: https://github.com/llvm/llvm-project/pull/138656.diff 1 Files Affected:
diff --git a/libcxxabi/src/demangle/Utility.h b/libcxxabi/src/demangle/Utility.h
index 511983ad40f7a..8829f3fa13a93 100644
--- a/libcxxabi/src/demangle/Utility.h
+++ b/libcxxabi/src/demangle/Utility.h
@@ -136,6 +136,8 @@ class OutputBuffer {
OutputBuffer &prepend(std::string_view R) {
size_t Size = R.size();
+ if (!Size)
+ return *this;
grow(Size);
std::memmove(Buffer + Size, Buffer, CurrentPosition);
|
Michael137
approved these changes
May 6, 2025
Michael137
changed the title
GeorgeARM
pushed a commit
to GeorgeARM/llvm-project
that referenced
this pull request
May 7, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
See #138564 for details.