From: "gprocida+abigail at google dot com" <sourceware-bugzilla@sourceware.org>
To: libabigail@sourceware.org
Subject: [Bug default/27162] New: libabigail appears to lose declarations for common symbols
Date: Fri, 08 Jan 2021 14:33:35 +0000 [thread overview]
Message-ID: <bug-27162-9487@http.sourceware.org/bugzilla/> (raw)
https://sourceware.org/bugzilla/show_bug.cgi?id=27162
Bug ID: 27162
Summary: libabigail appears to lose declarations for common
symbols
Product: libabigail
Version: unspecified
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: default
Assignee: dodji at redhat dot com
Reporter: gprocida+abigail at google dot com
CC: libabigail at sourceware dot org
Target Milestone: ---
libabigail appears to lose declarations for common symbols.
$ cat bar.c
int arg[2];
$ gcc -fno-common -g -Wall -Wextra -c bar.c
$ ~/android/libabigail/build/tools/abidw bar.o
<abi-corpus path='bar.o' architecture='elf-amd-x86_64'>
<elf-variable-symbols>
<elf-symbol name='arg' size='8' type='object-type' binding='global-binding'
visibility='default-visibility' is-defined='yes'/>
</elf-variable-symbols>
<abi-instr version='1.0' address-size='64' path='bar.c' comp-dir-path='/tmp'
language='LANG_C99'>
<type-decl name='int' size-in-bits='32' id='type-id-1'/>
<array-type-def dimensions='1' type-id='type-id-1' size-in-bits='64'
id='type-id-2'>
<subrange length='2' type-id='type-id-3' id='type-id-4'/>
</array-type-def>
<type-decl name='unsigned long int' size-in-bits='64' id='type-id-3'/>
<var-decl name='arg' type-id='type-id-2' mangled-name='arg'
visibility='default' filepath='/tmp/bar.c' line='1' column='1'
elf-symbol-id='arg'/>
</abi-instr>
</abi-corpus>
$ gcc -fcommon -g -Wall -Wextra -c bar.c
$ ~/android/libabigail/build/tools/abidw bar.o
<abi-corpus path='bar.o' architecture='elf-amd-x86_64'>
<elf-variable-symbols>
<elf-symbol name='arg' size='8' type='object-type' binding='global-binding'
visibility='default-visibility' is-defined='yes' is-common='yes'/>
</elf-variable-symbols>
</abi-corpus>
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next reply other threads:[~2021-01-08 14:33 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-08 14:33 gprocida+abigail at google dot com [this message]
2021-01-08 14:34 ` [Bug default/27162] " gprocida+abigail at google dot com
2021-07-26 20:30 ` gprocida at google dot com
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