[Bug c++/12649] New: ICE building winsup

[Bug c++/12649] New: ICE building winsup

[green at redhat dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12649

           Summary: ICE building winsup
           Product: gcc
           Version: tree-ssa
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: c++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: green at redhat dot com
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-cygwin

This ICE was discovered while building a cygwin cross compiler, however, the
compiler crashes in the same place on the preprocessed source with a native
Linux x86 toolchain.  I'll upload the preprocessed source.

$ g++ --version
g++ (GCC) 3.5-tree-ssa 20031016 (merged 20031005)
Copyright (C) 2003 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 
$ g++ -O1 -S spawn.ii
../../../../src/HEAD-2003-10-16/winsup/cygwin/spawn.cc: In function `const char*
find_exec(const char*, path_conv&, const char*, unsigned int, const char**)':
../../../../src/HEAD-2003-10-16/winsup/cygwin/spawn.cc:87: internal compiler
error: in optimize_function_tree, at tree-optimize.c:154
Please submit a full bug report,
with preprocessed source if appropriate.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.

[Bug c++/12649] ICE building winsup

[green at redhat dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12649



------- Additional Comments From green at redhat dot com  2003-10-16 19:29 -------
Created an attachment (id=4948)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=4948&action=view)
Preprocessed source for test case.

[Bug c++/12649] ICE building winsup

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12649


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Target Milestone|---                         |tree-ssa

[Bug optimization/12649] [tree-ssa] ICE in optimize_function_tree, at tree-optimize.c:154

[reichelt at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12649


reichelt at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|c++                         |optimization
     Ever Confirmed|                            |1
  GCC build triplet|i686-pc-linux-gnu           |
 GCC target triplet|i686-pc-cygwin              |
           Keywords|                            |ice-on-valid-code
   Last reconfirmed|0000-00-00 00:00:00         |2003-10-16 23:29:26
               date|                            |
            Summary|ICE building winsup         |[tree-ssa] ICE in
                   |                            |optimize_function_tree, at
                   |                            |tree-optimize.c:154


------- Additional Comments From reichelt at gcc dot gnu dot org  2003-10-16 23:29 -------
Here's a reduced testcase that crashes cc1plus as well as cc1:

=================================
char* foo(char**);

void bar()
{
    char ar[1], *p, *q;

    p = foo (&q);
    if (p == ar) *p = 0;
}
=================================

According to Phil's regression tester the bug was introduced
between 2003-10-12-ssa (#106) and 2003-10-13-ssa (#107).

Because the bug has nothing to do with cygwin, I removed target
and build triples.

[Bug optimization/12649] [tree-ssa] ICE in optimize_function_tree, at tree-optimize.c:154

[reichelt at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12649


reichelt at gcc dot gnu dot org changed:

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


------- Additional Comments From reichelt at gcc dot gnu dot org  2003-10-17 14:04 -------
Apparently fixed.