https://sourceware.org/bugzilla/show_bug.cgi?id=28040
Bug ID: 28040
Summary: libLLVM.so fails to link using LTO with ld.bfd +
LLVMGold plugin
Product: binutils
Version: 2.37 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: tbaeder at redhat dot com
Target Milestone: ---
This is a forward of https://bugzilla.redhat.com/show_bug.cgi?id=1954375
and https://reviews.llvm.org/D104230
ld.bfd (or rather libbfd I think) creates tons of fds and passes them to the
claim_file() callback that ld plugins implement. This is the case for archives
as far as I can see.
ld does not close the fd after the claim_file() callback has been called when
the LLVM plugin is in use, but does close them when the gcc plugin is used
(there is a comment about this in ld/plugin.c.
Simply removing that comment and the surrounding if statement fixed the problem
for me. Explicitly calling release_input_file() in LLVM's claim_file
implementation also worked for me.
I don't have a smaller test case for this unfortunately.
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