https://bugs.llvm.org/show_bug.cgi?id=46064
Bug ID: 46064
Summary: Shrink SHT_GROUP if its members are deleted
Product: tools
Version: trunk
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: llvm-objcopy/strip
Assignee: unassignedb...@nondot.org
Reporter: i...@maskray.me
CC: alexander.v.shaposhni...@gmail.com,
jake.h.ehrl...@gmail.com,
jh7370.2...@my.bristol.ac.uk,
llvm-bugs@lists.llvm.org, ruppre...@google.com
.section .foo,"aG",@progbits,foo,comdat
.section .bar,"aG",@progbits,foo,comdat
% as a.s -o a.o
% objcopy -R .foo a.o b.o; readelf -x .group b.o
Hex dump of section '.group':
0x00000000 01000000 05000000 ........
% llvm-objcopy -R .foo a.o b.o; readelf -x .group b.o
Hex dump of section '.group':
0x00000000 01000000 05000000 05000000 ............
GNU objcopy used to write zeros for the deleted member but it changed to
decrease sh_size after
https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=415f38a6d04c239b62ef3b384eb8376e5838e8df
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