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Use symbol name when comparing against an externed reloc (#214)

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* Use symbol name when comparing against an externed reloc

For partial matching files, often a symbol is externed even though it
should exist in the target object. We can still compare the symbol name,
instead of always returning a mismatch.

* Combine cases, and apply change reloc_eq in code.rs
This commit is contained in:
Ryan Burns 2025-05-30 14:00:02 -07:00 committed by GitHub
parent e9762e24c2
commit f58616b6dd
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2 changed files with 2 additions and 4 deletions
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3
objdiff-core/src/diff/code.rs
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@ -325,12 +325,11 @@ fn reloc_eq(
|| display_ins_data_literals(left_obj, left_ins)
== display_ins_data_literals(right_obj, right_ins))
}
(Some(_), None) => false,
(None, Some(_)) => {
// Match if possibly stripped weak symbol
symbol_name_addend_matches && right_reloc.symbol.flags.contains(SymbolFlag::Weak)
}
(None, None) => symbol_name_addend_matches,
(Some(_), None) | (None, None) => symbol_name_addend_matches,
}
}

3
objdiff-core/src/diff/data.rs
View File

@ -53,12 +53,11 @@ fn reloc_eq(
section_name_eq(left_obj, right_obj, sl, sr)
&& (symbol_name_addend_matches || address_eq(left, right))
}
(Some(_), None) => false,
(None, Some(_)) => {
// Match if possibly stripped weak symbol
symbol_name_addend_matches && right.symbol.flags.contains(SymbolFlag::Weak)
}
(None, None) => symbol_name_addend_matches,
(Some(_), None) | (None, None) => symbol_name_addend_matches,
}
}