792c206e2b
See [GRP_COMDAT group with STB_LOCAL signature](https://groups.google.com/g/generic-abi/c/2X6mR-s2zoc) objcopy PR: https://sourceware.org/bugzilla/show_bug.cgi?id=27931 GRP_COMDAT deduplication is purely based on the signature symbol name in ld.lld/GNU ld/gold. The local/global status is not part of the equation. If the signature symbol is localized by --localize-hidden or --keep-global-symbol, the intention is likely to make the group fully localized. Drop GRP_COMDAT to suppress deduplication. Reviewed By: jhenderson Differential Revision: https://reviews.llvm.org/D106782
38 lines
923 B
Plaintext
38 lines
923 B
Plaintext
## This checks that the group section is shrunk when its member is removed.
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# RUN: yaml2obj %s -o - \
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# RUN: | llvm-objcopy -R .foo - - \
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# RUN: | obj2yaml - \
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# RUN: | FileCheck %s
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# CHECK: - Name: .group
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# CHECK: Members:
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# CHECK-NEXT: - SectionOrType: GRP_COMDAT
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# CHECK-NEXT: - SectionOrType: .bar
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# CHECK-NOT: - SectionOrType:
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_X86_64
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Sections:
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- Name: .group
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Type: SHT_GROUP
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Info: foo_bar_grp
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Members:
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- SectionOrType: GRP_COMDAT
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- SectionOrType: .foo
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- SectionOrType: .bar
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- Name: .foo
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_GROUP ]
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- Name: .bar
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_GROUP ]
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Symbols:
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- Name: foo_bar_grp
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Section: .group
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Binding: STB_GLOBAL
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