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* [Bug lto/60721] New: xcoral fails to build with LTO: internal compiler error: verify_flow_info failed
@ 2014-03-31 13:41 rguenth at gcc dot gnu.org
2014-03-31 13:50 ` [Bug lto/60721] " rguenth at gcc dot gnu.org
` (4 more replies)
0 siblings, 5 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-03-31 13:41 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60721
Bug ID: 60721
Summary: xcoral fails to build with LTO: internal compiler
error: verify_flow_info failed
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Keywords: lto
Severity: normal
Priority: P3
Component: lto
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Created attachment 32497
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32497&action=edit
testcase
> ./xgcc -B. xcoral.i smac.i -fltoxcoral.c: In function 'main':
xcoral.c:216:2: warning: ignoring return value of 'fgets', declared with
attribute warn_unused_result [-Wunused-result]
xcoral.c:238:3: warning: ignoring return value of 'chdir', declared with
attribute warn_unused_result [-Wunused-result]
xcoral.c:273:2: warning: ignoring return value of 'chdir', declared with
attribute warn_unused_result [-Wunused-result]
Smac/smac.c: In function 'init_smac':
Smac/smac.c:176:8: error: control flow in the middle of basic block 2
Smac/smac.c:176:8: error: control flow in the middle of basic block 5
Smac/smac.c:176:8: internal compiler error: verify_flow_info failed
0x69cff9 verify_flow_info()
/space/rguenther/src/svn/trunk/gcc/cfghooks.c:260
0xb2064a cleanup_tree_cfg_noloop
/space/rguenther/src/svn/trunk/gcc/tree-cfgcleanup.c:746
0xb20716 cleanup_tree_cfg()
/space/rguenther/src/svn/trunk/gcc/tree-cfgcleanup.c:801
0x9ed861 execute_function_todo
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug lto/60721] xcoral fails to build with LTO: internal compiler error: verify_flow_info failed
2014-03-31 13:41 [Bug lto/60721] New: xcoral fails to build with LTO: internal compiler error: verify_flow_info failed rguenth at gcc dot gnu.org
@ 2014-03-31 13:50 ` rguenth at gcc dot gnu.org
2014-04-01 11:21 ` rguenth at gcc dot gnu.org
` (3 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-03-31 13:50 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60721
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |hubicka at gcc dot gnu.org
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
(gdb) p debug_bb (bb)
<bb 2>:
result_5 = getenv ("SMAC_STACK_SIZE");
if (result_5 != 0B)
goto <bb 3>;
else
goto <bb 5>;
(gdb) p debug_generic_expr (cfun->decl)
init_smac
in one unit getenv is pulled in via a header leading to
extern char *getenv (const char *__name) __attribute__ ((__nothrow__ ,
__leaf__)) __attribute__ ((__nonnull__ (1))) __attribute__
((__warn_unused_result__));
(note the leaf attribute), and in the other we have
int
main ( argc, argv )
int argc;
char **argv;
{
...
extern char *getenv ();
this means that if cfun->calls_setjmp as in this case, this can make a
difference. This is verifying after IPA transforms took place.
It seems that 'leaf' is a decl attribute and thus is not preserved
via gimple_call_fntype streaming (and also cannot be set for indirect calls).
Sth for stmt fixup similar as we handle noreturn?
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug lto/60721] xcoral fails to build with LTO: internal compiler error: verify_flow_info failed
2014-03-31 13:41 [Bug lto/60721] New: xcoral fails to build with LTO: internal compiler error: verify_flow_info failed rguenth at gcc dot gnu.org
2014-03-31 13:50 ` [Bug lto/60721] " rguenth at gcc dot gnu.org
@ 2014-04-01 11:21 ` rguenth at gcc dot gnu.org
2014-04-01 11:53 ` rguenth at gcc dot gnu.org
` (2 subsequent siblings)
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-04-01 11:21 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60721
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2014-04-01
Ever confirmed|0 |1
--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> ---
Reduced testcase:
> cat t1.i
extern char *getenv (const char *);
int main ()
{
getenv("");
}
> cat t2.c
#include <setjmp.h>
extern char *getenv (const char *) __attribute__ ((__leaf__));
int init_smac()
{
jmp_buf come_back;
getenv("");
return setjmp (come_back);
}
> ./xgcc -B. t1.i t2.c -flto
t2.c: In function 'init_smac':
t2.c:3:5: error: control flow in the middle of basic block 2
int init_smac()
^
t2.c:3:5: error: control flow in the middle of basic block 2
t2.c:3:5: internal compiler error: verify_flow_info failed
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug lto/60721] xcoral fails to build with LTO: internal compiler error: verify_flow_info failed
2014-03-31 13:41 [Bug lto/60721] New: xcoral fails to build with LTO: internal compiler error: verify_flow_info failed rguenth at gcc dot gnu.org
2014-03-31 13:50 ` [Bug lto/60721] " rguenth at gcc dot gnu.org
2014-04-01 11:21 ` rguenth at gcc dot gnu.org
@ 2014-04-01 11:53 ` rguenth at gcc dot gnu.org
2014-04-01 12:24 ` jamborm at gcc dot gnu.org
2014-04-01 12:29 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-04-01 11:53 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60721
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at gcc dot gnu.org |rguenth at gcc dot gnu.org
--- Comment #4 from Richard Biener <rguenth at gcc dot gnu.org> ---
Created attachment 32512
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=32512&action=edit
patch
Fixed for example with the following.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug lto/60721] xcoral fails to build with LTO: internal compiler error: verify_flow_info failed
2014-03-31 13:41 [Bug lto/60721] New: xcoral fails to build with LTO: internal compiler error: verify_flow_info failed rguenth at gcc dot gnu.org
` (2 preceding siblings ...)
2014-04-01 11:53 ` rguenth at gcc dot gnu.org
@ 2014-04-01 12:24 ` jamborm at gcc dot gnu.org
2014-04-01 12:29 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: jamborm at gcc dot gnu.org @ 2014-04-01 12:24 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60721
Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jamborm at gcc dot gnu.org
--- Comment #5 from Martin Jambor <jamborm at gcc dot gnu.org> ---
This is a duplicate of PR 60449. I'm not sure which one we want to
close as a duplicate though. In that PR 60449 comment 6, Richi wrote:
"OTOH, why do we have to merge the decls/cgraph nodes at all? Can't we simply
make them aliases if tree merging decides the decls are not equal?"
which might also be a nice fix.
^ permalink raw reply [flat|nested] 6+ messages in thread* [Bug lto/60721] xcoral fails to build with LTO: internal compiler error: verify_flow_info failed
2014-03-31 13:41 [Bug lto/60721] New: xcoral fails to build with LTO: internal compiler error: verify_flow_info failed rguenth at gcc dot gnu.org
` (3 preceding siblings ...)
2014-04-01 12:24 ` jamborm at gcc dot gnu.org
@ 2014-04-01 12:29 ` rguenth at gcc dot gnu.org
4 siblings, 0 replies; 6+ messages in thread
From: rguenth at gcc dot gnu.org @ 2014-04-01 12:29 UTC (permalink / raw)
To: gcc-bugs
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=60721
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |DUPLICATE
--- Comment #6 from Richard Biener <rguenth at gcc dot gnu.org> ---
Dup.
*** This bug has been marked as a duplicate of bug 60449 ***
^ permalink raw reply [flat|nested] 6+ messages in thread
end of thread, other threads:[~2014-04-01 12:29 UTC | newest]
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2014-03-31 13:41 [Bug lto/60721] New: xcoral fails to build with LTO: internal compiler error: verify_flow_info failed rguenth at gcc dot gnu.org
2014-03-31 13:50 ` [Bug lto/60721] " rguenth at gcc dot gnu.org
2014-04-01 11:21 ` rguenth at gcc dot gnu.org
2014-04-01 11:53 ` rguenth at gcc dot gnu.org
2014-04-01 12:24 ` jamborm at gcc dot gnu.org
2014-04-01 12:29 ` rguenth at gcc dot gnu.org
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