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* [Bug target/99094] New: [AIX] Thread local uninitialized data allocated in .comm
@ 2021-02-14 2:01 dje at gcc dot gnu.org
2021-02-14 2:01 ` [Bug target/99094] " dje at gcc dot gnu.org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: dje at gcc dot gnu.org @ 2021-02-14 2:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99094
Bug ID: 99094
Summary: [AIX] Thread local uninitialized data allocated in
.comm
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: dje at gcc dot gnu.org
Target Milestone: ---
Target: powerpc-ibm-aix*
GCC on AIX generates thread local uninitialized data in the common section,
which could conflict with another module.
$ cat static2.c
static _Thread_local int x;
$ cat static2.s
...
.comm x[UL],4
The symbol should be allocated in the TLS lcomm BSS section.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/99094] [AIX] Thread local uninitialized data allocated in .comm
2021-02-14 2:01 [Bug target/99094] New: [AIX] Thread local uninitialized data allocated in .comm dje at gcc dot gnu.org
@ 2021-02-14 2:01 ` dje at gcc dot gnu.org
2021-03-09 20:50 ` dje at gcc dot gnu.org
` (2 subsequent siblings)
3 siblings, 0 replies; 5+ messages in thread
From: dje at gcc dot gnu.org @ 2021-02-14 2:01 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99094
David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|UNCONFIRMED |NEW
Assignee|unassigned at gcc dot gnu.org |dje at gcc dot gnu.org
Target Milestone|--- |11.0
Last reconfirmed| |2021-02-14
--- Comment #1 from David Edelsohn <dje at gcc dot gnu.org> ---
Confirmed.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/99094] [AIX] Thread local uninitialized data allocated in .comm
2021-02-14 2:01 [Bug target/99094] New: [AIX] Thread local uninitialized data allocated in .comm dje at gcc dot gnu.org
2021-02-14 2:01 ` [Bug target/99094] " dje at gcc dot gnu.org
@ 2021-03-09 20:50 ` dje at gcc dot gnu.org
2021-03-11 21:56 ` cvs-commit at gcc dot gnu.org
2021-03-12 3:24 ` dje at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: dje at gcc dot gnu.org @ 2021-03-09 20:50 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99094
--- Comment #2 from David Edelsohn <dje at gcc dot gnu.org> ---
GCC should place uninitialized static variables into a separate "section
anchor" pool.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/99094] [AIX] Thread local uninitialized data allocated in .comm
2021-02-14 2:01 [Bug target/99094] New: [AIX] Thread local uninitialized data allocated in .comm dje at gcc dot gnu.org
2021-02-14 2:01 ` [Bug target/99094] " dje at gcc dot gnu.org
2021-03-09 20:50 ` dje at gcc dot gnu.org
@ 2021-03-11 21:56 ` cvs-commit at gcc dot gnu.org
2021-03-12 3:24 ` dje at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: cvs-commit at gcc dot gnu.org @ 2021-03-11 21:56 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99094
--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by David Edelsohn <dje@gcc.gnu.org>:
https://gcc.gnu.org/g:26ed5a28b18ad080e51e6b61f5f60d67b66fd5f3
commit r11-7633-g26ed5a28b18ad080e51e6b61f5f60d67b66fd5f3
Author: David Edelsohn <dje.gcc@gmail.com>
Date: Thu Mar 11 11:41:24 2021 -0500
aix: Use lcomm for TLS static data.
GCC on AIX generates thread local uninitialized data in the common section,
which could conflict with another module.
This patch changes the code generation to place static uninitialized
thread local data into the local common section specified with .lcomm.
This change also removes the need to create a file-local name for the TBSS
data.
gcc/ChangeLog:
2021-03-11 David Edelsohn <dje.gcc@gmail.com>
PR target/99094
* config/rs6000/rs6000.c (rs6000_xcoff_file_start): Don't create
xcoff_tbss_section_name.
* config/rs6000/xcoff.h (ASM_OUTPUT_TLS_COMMON): Use .lcomm.
* xcoffout.c (xcoff_tbss_section_name): Delete.
* xcoffout.h (xcoff_tbss_section_name): Delete.
^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/99094] [AIX] Thread local uninitialized data allocated in .comm
2021-02-14 2:01 [Bug target/99094] New: [AIX] Thread local uninitialized data allocated in .comm dje at gcc dot gnu.org
` (2 preceding siblings ...)
2021-03-11 21:56 ` cvs-commit at gcc dot gnu.org
@ 2021-03-12 3:24 ` dje at gcc dot gnu.org
3 siblings, 0 replies; 5+ messages in thread
From: dje at gcc dot gnu.org @ 2021-03-12 3:24 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99094
David Edelsohn <dje at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
--- Comment #4 from David Edelsohn <dje at gcc dot gnu.org> ---
Fixed.
^ permalink raw reply [flat|nested] 5+ messages in thread
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2021-02-14 2:01 [Bug target/99094] New: [AIX] Thread local uninitialized data allocated in .comm dje at gcc dot gnu.org
2021-02-14 2:01 ` [Bug target/99094] " dje at gcc dot gnu.org
2021-03-09 20:50 ` dje at gcc dot gnu.org
2021-03-11 21:56 ` cvs-commit at gcc dot gnu.org
2021-03-12 3:24 ` dje at gcc dot gnu.org
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