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From: "frank.mehnert at googlemail dot com" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug c++/99508] New: Asm labels declared inside a function are ignored
Date: Wed, 10 Mar 2021 08:22:05 +0000 [thread overview]
Message-ID: <bug-99508-4@http.gcc.gnu.org/bugzilla/> (raw)
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99508
Bug ID: 99508
Summary: Asm labels declared inside a function are ignored
Product: gcc
Version: unknown
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
Assignee: unassigned at gcc dot gnu.org
Reporter: frank.mehnert at googlemail dot com
Target Milestone: ---
This is apparently a gcc-11 regression. Following example:
#include <cstdio>
void foo()
{
void bar() asm ("bar_assembler");
extern unsigned buzz asm("buzz_assembler");
bar();
printf("%d\n", buzz);
}
Compile this C++ source code with -c and look at the generated symbols with
'objdump -tC'.
g++-10:
0000000000000000 *UND* 0000000000000000 bar_assembler
0000000000000000 *UND* 0000000000000000 buzz_assembler
0000000000000000 *UND* 0000000000000000 printf
g++-11: (Debian experimental 20210306):
0000000000000000 *UND* 0000000000000000 bar()
0000000000000000 *UND* 0000000000000000 buzz
0000000000000000 *UND* 0000000000000000 printf
g++11 produces the same result as g++10 if 'bar' and 'buzz' are declared
outside foo().
next reply other threads:[~2021-03-10 8:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-10 8:22 frank.mehnert at googlemail dot com [this message]
2021-03-10 8:43 ` [Bug c++/99508] [11 Regression] " rguenth at gcc dot gnu.org
2021-03-10 8:48 ` jakub at gcc dot gnu.org
2021-03-10 13:31 ` nathan at gcc dot gnu.org
2021-03-10 15:51 ` cvs-commit at gcc dot gnu.org
2021-03-10 15:55 ` nathan at gcc dot gnu.org
2021-03-20 10:30 ` frank.mehnert at googlemail dot com
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