[Bug regression/37976] New: ICE in insert_into_preds_of_block

[Bug regression/37976] New: ICE in insert_into_preds_of_block

[dirtyepic at gentoo dot org]

This looks like PR #29922, but I'm hitting it on the trunk while compiling
tcp-wrappers-7.6.  It didn't fail on my last system rebuild a week or two ago.


Using built-in specs.
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-4.4.0_pre9999/work/gcc-4.4.0-9999/configure
--prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.4.0-pre9999
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.0-pre9999
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.0-pre9999/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.0-pre9999/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/include/g++-v4
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec
--disable-fixed-point --disable-nls --with-system-zlib --disable-checking
--disable-werror --enable-secureplt --enable-multilib --disable-libmudflap
--disable-libssp --enable-libgomp --enable-cld --disable-libgcj
--enable-languages=c,c++ --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu
--with-bugurl=http://bugs.gentoo.org/ --with-pkgversion= --enable-linux-futex
--enable-checking
Thread model: posix
gcc version 4.4.0-pre9999 built 20081030 (Gentoo SVN ebuild) rev. 141462 ()
COLLECT_GCC_OPTIONS='-c' '-v' '-save-temps' '-O2' '-E' '-mtune=generic'
 /usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/cc1 -E -quiet -v
percent_x.c -mtune=generic -O2 -fpch-preprocess
ignoring nonexistent directory "/usr/local/include"
ignoring nonexistent directory
"/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/../../../../x86_64-pc-linux-gnu/include"
#include "..." search starts here:
#include <...> search starts here:
 /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/include
 /usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/include-fixed
 /usr/include
End of search list.
COMPILER_PATH=/usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/:/usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/:/usr/libexec/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/:/usr/lib/gcc/x86_64-pc-linux-gnu/:/usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/:/usr/libexec/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/:/usr/lib/gcc/x86_64-pc-linux-gnu/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/../../../../x86_64-pc-linux-gnu/bin/
LIBRARY_PATH=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/../../../../lib64/:/lib/../lib64/:/usr/lib/../lib64/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/../../../../x86_64-pc-linux-gnu/lib/:/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/../../../:/lib/:/usr/lib/
COLLECT_GCC_OPTIONS='-c' '-v' '-save-temps' '-O2' '-E' '-mtune=generic'
Using built-in specs.
Target: x86_64-pc-linux-gnu
Configured with:
/var/tmp/portage/sys-devel/gcc-4.4.0_pre9999/work/gcc-4.4.0-9999/configure
--prefix=/usr --bindir=/usr/x86_64-pc-linux-gnu/gcc-bin/4.4.0-pre9999
--includedir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/include
--datadir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.0-pre9999
--mandir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.0-pre9999/man
--infodir=/usr/share/gcc-data/x86_64-pc-linux-gnu/4.4.0-pre9999/info
--with-gxx-include-dir=/usr/lib/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/include/g++-v4
--host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --disable-altivec
--disable-fixed-point --disable-nls --with-system-zlib --disable-checking
--disable-werror --enable-secureplt --enable-multilib --disable-libmudflap
--disable-libssp --enable-libgomp --enable-cld --disable-libgcj
--enable-languages=c,c++ --enable-shared --enable-threads=posix
--enable-__cxa_atexit --enable-clocale=gnu
--with-bugurl=http://bugs.gentoo.org/ --with-pkgversion= --enable-linux-futex
--enable-checking
Thread model: posix
gcc version 4.4.0-pre9999 built 20081030 (Gentoo SVN ebuild) rev. 141462 ()
COLLECT_GCC_OPTIONS='-c' '-v' '-save-temps' '-O2' '-o'
'/var/cache/ccache/tmp.hash.kali.5429.o' '-mtune=generic'
 /usr/libexec/gcc/x86_64-pc-linux-gnu/4.4.0-pre9999/cc1 -fpreprocessed
/var/cache/ccache/percent_x.tmp.kali.5429.i -quiet -dumpbase
percent_x.tmp.kali.5429.i -mtune=generic -auxbase-strip
/var/cache/ccache/tmp.hash.kali.5429.o -O2 -version -o
percent_x.tmp.kali.5429.s
GNU C () version 4.4.0-pre9999 built 20081030 (Gentoo SVN ebuild) rev. 141462
(x86_64-pc-linux-gnu)
        compiled by GNU C version 4.4.0-pre9999 built 20081030 (Gentoo SVN
ebuild) rev. 141462, GMP version 4.2.4, MPFR version 2.3.2.
GGC heuristics: --param ggc-min-expand=30 --param ggc-min-heapsize=4096
Compiler executable checksum: e9c90fc3428f6f69e680d8fe0bdc6284
percent_x.c: In function 'percent_x':
percent_x.c:31: internal compiler error: in insert_into_preds_of_block, at
tree-ssa-pre.c:3120
Please submit a full bug report,
with preprocessed source if appropriate.

(Please note that despite having "Gentoo" in the version name, this is vanilla
GCC - no patches have been applied.)

The ICE is not triggered with -O{0,1,s}.


-- 
           Summary: ICE in insert_into_preds_of_block
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: regression
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: dirtyepic at gentoo dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37976

[Bug regression/37976] ICE in insert_into_preds_of_block

[dirtyepic at gentoo dot org]

------- Comment #1 from dirtyepic at gentoo dot org  2008-10-31 02:58 -------
Created an attachment (id=16594)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=16594&action=view)
percent_x.i


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37976

[Bug regression/37976] ICE in insert_into_preds_of_block

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-10-31 11:42 -------
Reducing.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37976

[Bug regression/37976] [4.4 Regression] ICE in insert_into_preds_of_block

[rguenth at gcc dot gnu dot org]

------- Comment #3 from rguenth at gcc dot gnu dot org  2008-10-31 12:18 -------
Reduced testcase:

void percent_x(int ch, char *p, char* ok_chars)                                 
{ 
  char *cp = ch == 'a' ? p : "";                                                
  for (;*(cp += __builtin_strspn (cp, ok_chars));)
    ;                                                                           
}

__builtin_strspn is partially redundant for cp == "" (it's zero).  The
zero is of wrong type becaue fold_builtin_strspn returns integer_zero_node
instead of size_zero_node.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2008-10-31 12:18:07
               date|                            |
            Summary|ICE in                      |[4.4 Regression] ICE in
                   |insert_into_preds_of_block  |insert_into_preds_of_block


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37976

[Bug regression/37976] [4.4 Regression] ICE in insert_into_preds_of_block

[rguenth at gcc dot gnu dot org]

------- Comment #4 from rguenth at gcc dot gnu dot org  2008-10-31 12:18 -------
Mine.  More functions need audit.


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |rguenth at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2008-10-31 12:18:07         |2008-10-31 12:18:23
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37976

[Bug middle-end/37976] [4.4 Regression] ICE in insert_into_preds_of_block

[rguenth at gcc dot gnu dot org]

-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|regression                  |middle-end
      Known to work|                            |4.3.2
           Priority|P3                          |P2
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37976

[Bug middle-end/37976] [4.4 Regression] ICE in insert_into_preds_of_block

[rguenth at gcc dot gnu dot org]

------- Comment #5 from rguenth at gcc dot gnu dot org  2008-11-01 12:47 -------
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=37976

[Bug middle-end/37976] [4.4 Regression] ICE in insert_into_preds_of_block

[rguenth at gcc dot gnu dot org]

------- Comment #6 from rguenth at gcc dot gnu dot org  2008-11-01 12:49 -------
Subject: Bug 37976

Author: rguenth
Date: Sat Nov  1 12:47:38 2008
New Revision: 141514

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=141514
Log:
2008-11-01  Richard Guenther  <rguenther@suse.de>

        PR middle-end/37976
        * builtins.c (fold_builtin_strspn): Return a size_t.
        (fold_builtin_strcspn): Likewise.

        * gcc.c-torture/compile/pr37976.c: New testcase.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr37976.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37976

[Bug middle-end/37976] [4.4 Regression] ICE in insert_into_preds_of_block

[jakub at gcc dot gnu dot org]

------- Comment #7 from jakub at gcc dot gnu dot org  2008-11-03 16:38 -------
*** Bug 38003 has been marked as a duplicate of this bug. ***


-- 

jakub at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |dcb314 at hotmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37976