[Bug c/56732] New: ICE

[Bug c/56732] New: ICE

[diffgeom at gmail dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

             Bug #: 56732
           Summary: ICE
    Classification: Unclassified
           Product: gcc
           Version: 4.8.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: diffgeom@gmail.com


Created attachment 29723
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=29723
Preprocessed source code

I was trying to compile Ndless with GCC 4.8.0 (configured to cross-compile to
arm-none-eabi), and it fails on this file. This compiled in GCC 4.7.2. It seems
that it compiles only if I remove the optimization flag or change it to -O1,
but not with -O2, -O3, or -Os.

The command line used to compile it is:
"/usr/local/bin/arm-none-eabi-gcc" -mcpu=arm7tdmi -I
"/home/rajiv/.ndless/include" -I
"/home/rajiv/ndless/ndless/Ndless-SDK/ndless/bin/../include" -I
"/home/rajiv/ndless/ndless/Ndless-SDK/ndless/bin/../3rd/nSDL/include" -I
"/home/rajiv/ndless/ndless/Ndless-SDK/ndless/bin/../3rd/nspireio/include" -fpic
-fno-builtin -D _TINSPIRE -Os -nostdlib -Wall -W -Wno-strict-aliasing -c
ploaderhook.c

The error occurs at function plh_hook:

ploaderhook.c: In function ‘plh_hook’:
ploaderhook.c:156:1: internal compiler error: in advance_target_bb, at
sched-rgn.c:3552
 HOOK_DEFINE(plh_hook) {
 ^
0x78f082 advance_target_bb
        ../../gcc-4.8.0/gcc/sched-rgn.c:3551
0x78f082 advance_target_bb
        ../../gcc-4.8.0/gcc/sched-rgn.c:3546
0xb35ec2 commit_schedule
        ../../gcc-4.8.0/gcc/haifa-sched.c:5619
0xb40292 schedule_block(basic_block_def**, void*)
        ../../gcc-4.8.0/gcc/haifa-sched.c:6416
0x7946aa schedule_region
        ../../gcc-4.8.0/gcc/sched-rgn.c:3048
0x7946aa schedule_insns
        ../../gcc-4.8.0/gcc/sched-rgn.c:3384
0x7946aa schedule_insns()
        ../../gcc-4.8.0/gcc/sched-rgn.c:3363
0x794a1c rest_of_handle_sched2
        ../../gcc-4.8.0/gcc/sched-rgn.c:3608
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.




Operating System: Ubuntu 12.10 x86_64

Output of arm-none-eabi-gcc -v:

Using built-in specs.
COLLECT_GCC=arm-none-eabi-gcc
COLLECT_LTO_WRAPPER=/usr/local/libexec/gcc/arm-none-eabi/4.8.0/lto-wrapper
Target: arm-none-eabi
Configured with: ../gcc-4.8.0/configure --target=arm-none-eabi
--prefix=/usr/local --enable-interwork --enable-multilib
--enable-languages=c,c++ --with-system-zlib --with-newlib --disable-shared
--with-gnu-as --with-gnu-ld --with-float=soft --disable-werror
Thread model: single
gcc version 4.8.0 (GCC)

I have attached the preprocessed source code.

-Rajiv
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56725

Manuel López-Ibáñez <manu at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-03-25
                 CC|                            |manu at gcc dot gnu.org
     Ever Confirmed|0                           |1

--- Comment #1 from Manuel López-Ibáñez <manu at gcc dot gnu.org> 2013-03-25 22:55:48 UTC ---
This is because the second error is not an error but a note clarifying with
first error. In g++, some notes are "indented" because the output is such a
mess it is hard to find out stuff. The fix is to replace the second permerror
by inform like: (totally untested)

Index: gcc/cp/call.c
===================================================================
--- gcc/cp/call.c       (revision 197018)
+++ gcc/cp/call.c       (working copy)
@@ -5834,15 +5834,15 @@ convert_like_real (conversion *convs, tr
                                      complain);
          else if (t->kind == ck_identity)
            break;
        }

-      permerror (loc, "invalid conversion from %qT to %qT",
-                TREE_TYPE (expr), totype);
-      if (fn)
-       permerror (DECL_SOURCE_LOCATION (fn),
-                  "  initializing argument %P of %qD", argnum, fn);
+      if (permerror (loc, "invalid conversion from %qT to %qT",
+                     TREE_TYPE (expr), totype)
+          && fn)
+       inform (DECL_SOURCE_LOCATION (fn),
+                "when initializing argument %P of %qD", argnum, fn);

       return cp_convert (totype, expr, complain);
     }

   if (issue_conversion_warnings && (complain & tf_warning))
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Subject: [Bug target/49880] SuperH: ICE when -m4 is used with -mdivÊll-div1
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idI880

--- Comment #5 from Oleg Endo <olegendo at gcc dot gnu.org> 2013-03-25 23:02:04 UTC ---
Although it doesn't show up here, I've also backported the fix to the 4.7
branch and committed it as rev. 197071.

OK to close this PR?

[Bug rtl-optimization/56732] ICE in advance_target_bb

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

Mikael Pettersson <mikpe at it dot uu.se> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mikpe at it dot uu.se

--- Comment #1 from Mikael Pettersson <mikpe at it dot uu.se> 2013-03-26 09:40:52 UTC ---
Also reproducible for arm-linux-gnueabi: 4.8.0 ICEs, 4.7.2 and 4.6.3 don't.

[Bug rtl-optimization/56732] ICE in advance_target_bb

[mikpe at it dot uu.se]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

--- Comment #2 from Mikael Pettersson <mikpe at it dot uu.se> 2013-03-26 13:35:30 UTC ---
Started with http://gcc.gnu.org/r188742 or http://gcc.gnu.org/r188743.

With r188742 I get:

In file included from ploaderhook.c:25:0:
/home/rajiv/ndless/ndless/Ndless-SDK/ndless/bin/../include/os.h: In function
'sprintf':
/home/rajiv/ndless/ndless/Ndless-SDK/ndless/bin/../include/os.h:304:1: error:
unrecognizable insn:
(jump_insn 23 22 24 2 (simple_return)
/home/rajiv/ndless/ndless/Ndless-SDK/ndless/bin/../include/os.h:304 -1
     (nil)
 -> simple_return)
/home/rajiv/ndless/ndless/Ndless-SDK/ndless/bin/../include/os.h:304:1: internal
compiler error: in extract_insn, at recog.c:2130

Starting with r188743 I get:

ploaderhook.c: In function 'plh_hook':
ploaderhook.c:156:1: internal compiler error: in advance_target_bb, at
sched-rgn.c:3466

r188741 was OK.

[Bug rtl-optimization/56732] ICE in advance_target_bb

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2013-03-26
     Ever Confirmed|0                           |1
      Known to fail|                            |4.8.0

--- Comment #3 from Richard Biener <rguenth at gcc dot gnu.org> 2013-03-26 14:23:57 UTC ---
Thus, confirmed.

[Bug rtl-optimization/56732] ICE in advance_target_bb

[gretay at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

gretay at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |gretay at gcc dot gnu.org

--- Comment #4 from gretay at gcc dot gnu.org 2013-04-26 12:25:49 UTC ---
I'm looking into it.
Thanks,
Greta

[Bug rtl-optimization/56732] ICE in advance_target_bb

[enrico.scholz at informatik dot tu-chemnitz.de]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

enrico.scholz at informatik dot tu-chemnitz.de changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |enrico.scholz at informatik
                   |                            |dot tu-chemnitz.de

--- Comment #5 from enrico.scholz at informatik dot tu-chemnitz.de 2013-04-30 12:07:46 UTC ---
I can reproduce this error message with gcc-4.8 (patched by OpenEmbedded) on an
ARM platform with a simple

----
extern void bar();
void __attribute__((__naked__)) foo(void)
{
        bar();
}
----

$ arm-linux-gnueabi-gcc -O2 -c /tmp/xxx.c 
/tmp/xxx.c: In function 'foo':
/tmp/xxx.c:5:1: internal compiler error: in advance_target_bb, at
sched-rgn.c:3552

[Bug rtl-optimization/56732] ICE in advance_target_bb

[gretay at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

--- Comment #6 from gretay at gcc dot gnu.org 2013-05-01 17:32:14 UTC ---
Thanks for the small testcase! There is indeed a problem with rtl epilogue
generated for naked functions. Here is a fix, testing in progress.

diff --git a/gcc/config/arm/arm.c b/gcc/config/arm/arm.c
index 464d91c..9d4a453 100644
--- a/gcc/config/arm/arm.c
+++ b/gcc/config/arm/arm.c
@@ -24067,7 +24067,8 @@ arm_expand_epilogue (bool really_return)
   if (IS_NAKED (func_type)
       || (IS_VOLATILE (func_type) && TARGET_ABORT_NORETURN))
     {
-      emit_jump_insn (simple_return_rtx);
+      if (really_return)
+        emit_jump_insn (simple_return_rtx);
       return;
     }

[Bug rtl-optimization/56732] ICE in advance_target_bb

[gretay at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

--- Comment #7 from gretay at gcc dot gnu.org ---
Author: gretay
Date: Thu May  2 15:45:10 2013
New Revision: 198547

URL: http://gcc.gnu.org/viewcvs?rev=198547&root=gcc&view=rev
Log:
gcc/ChangeLog

2013-05-02  Greta Yorsh  <Greta.Yorsh@arm.com>

    PR target/56732
    * config/arm/arm.c (arm_expand_epilogue): Check really_return before
    generating simple_return for naked functions.

gcc/testsuite/ChangeLog

2013-05-02  Greta Yorsh  <Greta.Yorsh@arm.com>

    PR target/56732
    * gcc.target/arm/pr56732-1.c: New test.


Added:
    trunk/gcc/testsuite/gcc.target/arm/pr56732-1.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/config/arm/arm.c
    trunk/gcc/testsuite/ChangeLog

[Bug rtl-optimization/56732] ICE in advance_target_bb

[gretay at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

gretay at gcc dot gnu.org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #8 from gretay at gcc dot gnu.org ---
Author: gretay
Date: Fri May 24 15:15:44 2013
New Revision: 199296

URL: http://gcc.gnu.org/viewcvs?rev=199296&root=gcc&view=rev
Log:
Backported from mainline
2013-05-02  Greta Yorsh  <Greta.Yorsh@arm.com>

gcc/ChangeLog

    PR target/56732
    * config/arm/arm.c (arm_expand_epilogue): Check really_return before
    generating simple_return for naked functions.

gcc/testsuite/ChangeLog

    PR target/56732
    * gcc.target/arm/pr56732-1.c: New test.


Added:
    branches/gcc-4_8-branch/gcc/testsuite/gcc.target/arm/pr56732-1.c
Modified:
    branches/gcc-4_8-branch/gcc/ChangeLog
    branches/gcc-4_8-branch/gcc/config/arm/arm.c
    branches/gcc-4_8-branch/gcc/testsuite/ChangeLog

[Bug rtl-optimization/56732] ICE in advance_target_bb

[diffgeom at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56732

--- Comment #9 from Rajiv Gupta <diffgeom at gmail dot com> ---
Great, it's fixed! :)