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* [Bug c/110072] New: __gcov_dump cannot generate gcda for so files opened with dlopen when gcc version is later than 5.1.0
@ 2023-06-01 8:16 rc452860 at gmail dot com
2023-06-01 8:47 ` [Bug gcov-profile/110072] " rc452860 at gmail dot com
2023-06-01 13:43 ` pinskia at gcc dot gnu.org
0 siblings, 2 replies; 3+ messages in thread
From: rc452860 at gmail dot com @ 2023-06-01 8:16 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110072
Bug ID: 110072
Summary: __gcov_dump cannot generate gcda for so files opened
with dlopen when gcc version is later than 5.1.0
Product: gcc
Version: 4.8.5
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: rc452860 at gmail dot com
Target Milestone: ---
Created attachment 55229
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=55229&action=edit
example
When the version of gcc is lower than 5.1.0, __gcov_dump cannot generate gcda
files for the so files opened by dlopen.
See attachment for sample project.
After comparing the different versions of GCC code, I found that gcc before
5.1.0 stored counter data in gcov_list, while later versions of GCC stored it
in __gcov_master.
The two versions are defined as follows:
gcc4.8.5 in libgcc/libgcov.c
```
/* Chain of per-object gcov structures. */
static struct gcov_info *gcov_list;
```
gcc8.5.0 in libgcc/libgcov-driver.c
```
/* Exactly one of these will be live in the process image. */
struct gcov_master __gcov_master =
{GCOV_VERSION, 0};
```
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug gcov-profile/110072] __gcov_dump cannot generate gcda for so files opened with dlopen when gcc version is later than 5.1.0
2023-06-01 8:16 [Bug c/110072] New: __gcov_dump cannot generate gcda for so files opened with dlopen when gcc version is later than 5.1.0 rc452860 at gmail dot com
@ 2023-06-01 8:47 ` rc452860 at gmail dot com
2023-06-01 13:43 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: rc452860 at gmail dot com @ 2023-06-01 8:47 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110072
--- Comment #1 from 若尘 <rc452860 at gmail dot com> ---
The attachment modify from https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83879
To reproduce the issue, need to replace the gcc command in run.sh.
^ permalink raw reply [flat|nested] 3+ messages in thread
* [Bug gcov-profile/110072] __gcov_dump cannot generate gcda for so files opened with dlopen when gcc version is later than 5.1.0
2023-06-01 8:16 [Bug c/110072] New: __gcov_dump cannot generate gcda for so files opened with dlopen when gcc version is later than 5.1.0 rc452860 at gmail dot com
2023-06-01 8:47 ` [Bug gcov-profile/110072] " rc452860 at gmail dot com
@ 2023-06-01 13:43 ` pinskia at gcc dot gnu.org
1 sibling, 0 replies; 3+ messages in thread
From: pinskia at gcc dot gnu.org @ 2023-06-01 13:43 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110072
Andrew Pinski <pinskia at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
GCC before 10.x is no longer being supported. That is we are not producing
another release of GCC before 10.x. So this is just a dup of bug 83879.
*** This bug has been marked as a duplicate of bug 83879 ***
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2023-06-01 13:43 UTC | newest]
Thread overview: 3+ messages (download: mbox.gz / follow: Atom feed)
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2023-06-01 8:16 [Bug c/110072] New: __gcov_dump cannot generate gcda for so files opened with dlopen when gcc version is later than 5.1.0 rc452860 at gmail dot com
2023-06-01 8:47 ` [Bug gcov-profile/110072] " rc452860 at gmail dot com
2023-06-01 13:43 ` pinskia at gcc dot gnu.org
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