[Bug c/59776] New: gcc -g -O1 ICE in expand_debug_locations, at cfgexpand.c:3865

["zeccav at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59776

            Bug ID: 59776
           Summary: gcc -g -O1 ICE in expand_debug_locations, at
                    cfgexpand.c:3865
           Product: gcc
           Version: 4.8.2
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: zeccav at gmail dot com

/* gcc -g -O1 ICE in expand_debug_locations, at cfgexpand.c:3865 */
/* gcc 4.8.2-7 20131212 */
typedef struct {
  float re,im;
} Complex;
void sub_(Complex *var_Dummy)
{
Complex var_;
auto Complex dummy_;
var_ =  *var_Dummy;
 *(((int *)&(dummy_.re))) = 0;
 *(((int *)&(dummy_.im))) = 0;
dummy_ = var_;
}
/*
gccerr8.c: In function ‘sub_’:
gccerr8.c:6:6: internal compiler error: in expand_debug_locations, at
cfgexpand.c:3865
 void sub_(var_Dummy)
      ^
Please submit a full bug report, with preprocessed source if appropriate.
See <http://bugzilla.redhat.com/bugzilla> for instructions.
Preprocessed source stored into /tmp/ccrC9Ofk.out file, please attach this to
your bugreport.

// /usr/libexec/gcc/x86_64-redhat-linux/4.8.2/cc1 -quiet gccerr8.c -quiet
-dumpbase gccerr8.c -mtune=generic -march=x86-64 -auxbase gccerr8 -g -O1 -o -
-frandom-seed=0
# 1 "gccerr8.c"
# 1 "/home/vitti/f95/cc//"
# 1 "<command-line>"
# 1 "/usr/include/stdc-predef.h" 1 3 4
# 1 "<command-line>" 2
# 1 "gccerr8.c"
typedef struct {
  float re,im;
} Complex;
void sub_(Complex *var_Dummy)
{
Complex var_;
auto Complex dummy_;
var_ = *var_Dummy;
 *(((int *)&(dummy_.re))) = 0;
 *(((int *)&(dummy_.im))) = 0;
dummy_ = var_;
}
*/
>From gcc-bugs-return-440138-listarch-gcc-bugs=gcc.gnu.org@gcc.gnu.org Sun Jan 12 18:02:39 2014
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From: "mpolacek at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug middle-end/59776] [4.8/4.9 Regression] gcc -g -O1 ICE in expand_debug_locations, at cfgexpand.c:3865
Date: Sun, 12 Jan 2014 18:02:00 -0000
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http://gcc.gnu.org/bugzilla/show_bug.cgi?idY776

Marek Polacek <mpolacek at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
   Last reconfirmed|                            |2014-01-12
                 CC|                            |mpolacek at gcc dot gnu.org
          Component|c                           |middle-end
   Target Milestone|---                         |4.8.4
            Summary|gcc -g -O1 ICE in           |[4.8/4.9 Regression] gcc -g
                   |expand_debug_locations, at  |-O1 ICE in
                   |cfgexpand.c:3865            |expand_debug_locations, at
                   |                            |cfgexpand.c:3865
     Ever confirmed|0                           |1

--- Comment #1 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Confirmed.