[Bug c/37290] New: segfault

[Bug c/37290] New: segfault

[regehr at cs dot utah dot edu]

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Seen on Ubuntu Hardy.

regehr@john-home:~/volatile/tmp14$ current-gcc -O3 small.c
small.c: In function ‘func_93’:
small.c:49: warning: large integer implicitly truncated to unsigned type
current-gcc: Internal error: Segmentation fault (program cc1)
Please submit a full bug report.
See <http://gcc.gnu.org/bugs.html> for instructions.

regehr@john-home:~/volatile/tmp14$ current-gcc -v

Using built-in specs.
Target: i686-pc-linux-gnu
Configured with: ../configure --program-prefix=current-
--enable-languages=c,c++ --prefix=/home/regehr : (reconfigured) ../configure
--program-prefix=current- --enable-languages=c,c++ --prefix=/home/regehr :
(reconfigured) ../configure --program-prefix=current- --enable-languages=c,c++
--prefix=/home/regehr : (reconfigured) ../configure --program-prefix=current-
--enable-languages=c,c++ --prefix=/home/regehr : (reconfigured) ../configure
--program-prefix=current- --prefix=/home/regehr --enable-languages=c,c++
--no-create --no-recursion
Thread model: posix
gcc version 4.4.0 20080830 (experimental) (GCC) 

regehr@john-home:~/volatile/tmp14$ cat small.c

typedef int int32_t;
typedef unsigned char uint8_t;
typedef unsigned int uint32_t;
static inline unsigned int
lshift_u_u (unsigned int left, unsigned int right)
{
  if ((right >= sizeof (unsigned int) * 8) || (left > (4294967295U >> right)))
    return left;
  return left << right;
}
static inline int
rshift_s_u (int left, unsigned int right)
{
  if ((left < 0) || (right >= sizeof (int) * 8))
    return left;
  return left >> right;
}

uint32_t g_57;
uint32_t g_92;
uint32_t g_196;
int32_t func_81 (uint32_t p_82);
int32_t func_93 (uint8_t p_94, uint32_t p_96, uint8_t p_97);
uint32_t
func_70 (uint32_t p_71)
{
  uint32_t l_73;
  for (1; 1; --l_73)
    {
      uint32_t l_79;
      if (((g_57 <= 1) ^ p_71
           && l_79 | p_71) - (lshift_u_u (p_71,
                                          (rshift_s_u
                                           ((func_81 (1) != 1), g_196)))))
        if (g_92)
          return 1;
      func_93 (p_71, 1, 1);
    }
}
int32_t
func_81 (uint32_t p_82)
{
  return 0;
}

int32_t
func_93 (uint8_t p_94, uint32_t p_96, uint8_t p_97)
{
  uint32_t l_110 = 0x9E5B73647B8CEE11LL;
  for (1; l_110; l_110--)
    {
    }
}


-- 
           Summary: segfault
           Product: gcc
           Version: 4.4.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: regehr at cs dot utah dot edu
 GCC build triplet: i686-pc-linux-gnu
  GCC host triplet: i686-pc-linux-gnu
GCC target triplet: i686-pc-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37290

[Bug target/37290] [4.4 Regression] Endless recursion in cse_cc_succs

[rguenth at gcc dot gnu dot org]

------- Comment #1 from rguenth at gcc dot gnu dot org  2008-08-31 12:26 -------
Confirmed.  We endlessly recurse in cse_cc_succs.  Probably a dup of PR36635,
also related to PR33424 (same stuff).


-- 

rguenth at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  BugsThisDependsOn|                            |33424, 36635
             Status|UNCONFIRMED                 |NEW
          Component|c                           |target
     Ever Confirmed|0                           |1
           Keywords|                            |ice-on-valid-code
      Known to work|                            |4.3.2
   Last reconfirmed|0000-00-00 00:00:00         |2008-08-31 12:26:24
               date|                            |
            Summary|segfault                    |[4.4 Regression] Endless
                   |                            |recursion in cse_cc_succs
   Target Milestone|---                         |4.4.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37290

[Bug target/37290] [4.4 Regression] Endless recursion in cse_cc_succs

[rguenth at gcc dot gnu dot org]

------- Comment #2 from rguenth at gcc dot gnu dot org  2008-09-03 08:45 -------
*** Bug 37341 has been marked as a duplicate of this bug. ***


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37290

[Bug target/37290] [4.4 Regression] Endless recursion in cse_cc_succs

[jsm28 at gcc dot gnu dot org]

-- 

jsm28 at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Priority|P3                          |P1


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37290

[Bug target/37290] [4.4 Regression] Endless recursion in cse_cc_succs

[jakub at gcc dot gnu dot org]

------- Comment #3 from jakub at gcc dot gnu dot org  2008-10-08 08:13 -------
Subject: Bug 37290

Author: jakub
Date: Wed Oct  8 08:12:25 2008
New Revision: 140966

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=140966
Log:
        PR target/36635
        PR target/37290
        PR rtl-optimization/37341
        * cse.c (cse_cc_succs): Add ORIG_BB argument, don't follow edges
        to ORIG_BB, pass through ORIG_BB recursively.
        (cse_condition_code_reg): Adjust caller.

        * gcc.c-torture/compile/pr37341.c: New test.

Added:
    trunk/gcc/testsuite/gcc.c-torture/compile/pr37341.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/cse.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37290

[Bug target/37290] [4.4 Regression] Endless recursion in cse_cc_succs

[jakub at gcc dot gnu dot org]

------- Comment #4 from jakub at gcc dot gnu dot org  2008-10-08 08:16 -------
Fixed.


-- 

jakub at gcc dot gnu dot org changed:

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37290

[Bug target/37290] [4.4 Regression] Endless recursion in cse_cc_succs

[jason at gcc dot gnu dot org]

------- Comment #5 from jason at gcc dot gnu dot org  2009-11-08 22:27 -------
Subject: Bug 37290

Author: jason
Date: Sun Nov  8 22:27:39 2009
New Revision: 154018

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=154018
Log:
        PR c++/37290
        * pt.c (tsubst) [TYPEOF_TYPE]: Set cp_unevaluated_operand.

Added:
    trunk/gcc/testsuite/g++.dg/ext/typeof11.C
Modified:
    trunk/gcc/cp/ChangeLog
    trunk/gcc/cp/pt.c
    trunk/gcc/testsuite/ChangeLog


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37290