https://sourceware.org/bugzilla/show_bug.cgi?id=21274
Bug ID: 21274
Summary: ld segfaults linking PE DLL
Product: binutils
Version: unspecified
Status: UNCONFIRMED
Severity: critical
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: kyrab at mail dot ru
Target Milestone: ---
Created attachment 9907
--> https://sourceware.org/bugzilla/attachment.cgi?id=9907&action=edit
patch
`ld` segfaults when linking C++ PE DLL.
The culprit is pretty much trivial: `pe_create_import_fixup` uses fixed-sized
buffer to create mangled names, but this buffer is too small (300 bytes) and is
easily overflowed by long mangled names.
Quick patch is attached. I bumped the size of the buffer to more sane 2048
bytes. Since `gcc` doesn't limit identifier length, a proper fix would be
slightly more involved, but I didn't bother with it, sorry.
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