[Bug tools/33004] Stack Buffer Underflow in eu-unstrip's sections_match Function

[xdcao.cs at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=33004

--- Comment #5 from Xudong Cao <xdcao.cs at gmail dot com> ---
ASan rightly flags the cross-object pointer subtraction in
sections_match()—disallowed under C11 §6.5.6—because its red-zone poisoning
detects the out-of-object access even though the same UB silently passes in a
non-instrumented build.

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