[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #21 from rguenth at gcc dot gnu dot org 2007-02-04 15:28 --- Subject: Bug 27657 Author: rguenth Date: Sun Feb 4 15:27:53 2007 New Revision: 121576 URL: http://gcc.gnu.org/viewcvs?root=gccview=revrev=121576 Log: 2007-02-04 Richard Guenther [EMAIL PROTECTED] Backport from mainline: 2007-01-30 Richard Guenther [EMAIL PROTECTED] PR middle-end/27657 * dwarf2out.c (reference_to_unused): Query varpool if the variable was output. * g++.dg/debug/pr27657.C: New testcase. Added: branches/gcc-4_2-branch/gcc/testsuite/g++.dg/debug/pr27657.C - copied unchanged from r121335, trunk/gcc/testsuite/g++.dg/debug/pr27657.C Modified: branches/gcc-4_2-branch/gcc/ChangeLog branches/gcc-4_2-branch/gcc/dwarf2out.c branches/gcc-4_2-branch/gcc/testsuite/ChangeLog -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #22 from rguenth at gcc dot gnu dot org 2007-02-04 15:29 --- Fixed. -- rguenth at gcc dot gnu dot org changed: What|Removed |Added Status|ASSIGNED|RESOLVED Resolution||FIXED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #23 from tbm at cyrius dot com 2007-02-04 17:52 --- (In reply to comment #22) Fixed. I can confirm this - with the exception of one case for which I filed a new report: PR30700. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #18 from ismail at pardus dot org dot tr 2007-02-01 19:25 --- Any chance of a 4.2 backport ? Looks like varpool_node does not exist in 4.2 branch. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #19 from tbm at cyrius dot com 2007-02-01 19:32 --- (In reply to comment #18) Any chance of a 4.2 backport ? Looks like varpool_node does not exist in 4.2 branch. I noticed this as well. It's easy enough to fix: 14:20 richi tbm: sure s/varpool_/cgraph_varpool_/ Richi has already tested the patch on 4.2 so I assume he'll apply it soon. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #20 from ismail at pardus dot org dot tr 2007-02-01 19:51 --- (In reply to comment #19) (In reply to comment #18) Any chance of a 4.2 backport ? Looks like varpool_node does not exist in 4.2 branch. I noticed this as well. It's easy enough to fix: 14:20 richi tbm: sure s/varpool_/cgraph_varpool_/ Richi has already tested the patch on 4.2 so I assume he'll apply it soon. Nice, thanks :) -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #17 from rguenth at gcc dot gnu dot org 2007-01-31 12:28 --- *** Bug 30651 has been marked as a duplicate of this bug. *** -- rguenth at gcc dot gnu dot org changed: What|Removed |Added CC||aanisimov at inbox dot ru http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #16 from rguenth at gcc dot gnu dot org 2007-01-30 10:23 --- Fixed on the mainline. -- rguenth at gcc dot gnu dot org changed: What|Removed |Added Known to work|4.1.1 4.1.2 |4.1.1 4.1.2 4.3.0 Summary|[4.2/4.3 regression] bogus |[4.2 regression] bogus |undefined reference error to|undefined reference error to |static var with -g and -O |static var with -g and -O http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #10 from pinskia at gcc dot gnu dot org 2006-10-20 07:42 --- *** Bug 29417 has been marked as a duplicate of this bug. *** -- pinskia at gcc dot gnu dot org changed: What|Removed |Added CC||peter at chocky dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #7 from pinskia at gcc dot gnu dot org 2006-08-28 20:36 --- (In reply to comment #6) The log message and the ChangeLog entry don't mention it, but this patch also modifies gcc/dwarf2out.c. It was backed out right after the commit: http://gcc.gnu.org/viewcvs?view=revrevision=112362 But that would mean it was caused by the revision which I had mentioned in comment #5 as that revision put the code back in. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #8 from geoffk at gcc dot gnu dot org 2006-08-28 20:44 --- (In reply to comment #3) Created an attachment (id=12037) -- (http://gcc.gnu.org/bugzilla/attachment.cgi?id=12037action=view) [edit] patch It looks like we should bite the bullet and let cgraph code to output the debug info I am testing the attached patch It looks like this patch will prevent the output of debug information for variables that are optimized out, but that's wrong; the variables should be visible to the user in the debugger even if they are optimized away. I think the actual problem is that reference_to_unused in dwarf2out.c is checking TREE_USED and expecting all used variables to be output, but that doesn't seem to be happening in this case. Perhaps there is something in cgraph which can be called to ask if a variable is *really* going to be output? -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #9 from janis at gcc dot gnu dot org 2006-08-28 22:58 --- I can confirm that the latest regression is from r112408. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
[Bug middle-end/27657] [4.2 regression] bogus undefined reference error to static var with -g and -O
--- Comment #5 from pinskia at gcc dot gnu dot org 2006-08-27 22:32 --- Janis, Can you do a regression hunt on this bug? I almost think it was caused by revision 112408. -- pinskia at gcc dot gnu dot org changed: What|Removed |Added CC||janis at gcc dot gnu dot org Last reconfirmed|2006-05-29 03:07:05 |2006-08-27 22:32:58 date|| http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27657
