[lldb] skip duplicate DW_TAG_member DIEs when building a record layout - #13848
Open
charles-zablit wants to merge 1 commit into
Open
[lldb] skip duplicate DW_TAG_member DIEs when building a record layout#13848charles-zablit wants to merge 1 commit into
charles-zablit wants to merge 1 commit into
Conversation
charles-zablit
force-pushed
the
cz/lldb/fix-dwarf-duplicate-member-crash
branch
from
August 14, 2026 11:03
a77be34 to
ba90197
Compare
|
We should definitely fix that in dsymutil instead. |
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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
dsymutil's parallel DWARFLinker can emit two identical
DW_TAG_memberDIEs for the same field (observed forstd::basic_string's internal compressed-pair member). LLDB registered a distinctFieldDeclfor each, and Clang's record-layout builder crashes when two fields of the same type land at the same offset. Detect and skip an exact duplicate of the immediately preceding field.Fixes:
lldb/test/API/lang/swift/cxx_interop/forward/stl-types/TestSwiftForwardInteropSTLTypes.py