Improve automatic symbol pairing for functions with compiler-generated names#303
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encounter merged 4 commits intoencounter:mainfrom Dec 21, 2025
Merged
Improve automatic symbol pairing for functions with compiler-generated names#303encounter merged 4 commits intoencounter:mainfrom
encounter merged 4 commits intoencounter:mainfrom
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The list of symbols is not necessarily sorted by address, so if there are multiple `__arraydtor$1234` functions it's possible that they're in reverse order on the right, which would cause them to be paired up incorrectly. To fix this we sort by section index and symbol address after filtering down the list of symbols to ones that have matching names.
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Added another fix, this one for the bug where objdiff would pair up two different symbols when their compiler-generated names just happened to be the exact same thing, which was rare but sometimes happens in enormous TUs. A side effect of how I fixed this means that it no longer pairs up symbols with the same name but wrong section, i.e. if you forget to mark something |
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A couple of improvements for automatically pairing up functions with weird symbol names. MWCC can output symbols in a different order from their actual address order, so they're now internally sorted to handle the case of a single TU having multiple functions with different discriminators so they don't get swapped during pairing.
Before:
After:
And discriminators in the middle of anonymous class names like
__dt__Q29dCamera_c23@class$3665d_camera_cppFvare now also ignored, in addition to the ones at the end of the symbol which were already ignored.Fixes #266