[Bug tree-optimization/16045] ICE fold check: original tree changed by fold

[Bug tree-optimization/16045] ICE fold check: original tree changed by fold

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
OtherBugsDependingO|                            |20623
              nThis|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16045

[Bug tree-optimization/16045] ICE fold check: original tree changed by fold

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-06-15 03:17 -------
Could you double check this now, I might have fixed this? Please use the 4.0 branch as the mainline 
does not do as much fold checking as it should, PR 21180.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16045

[Bug tree-optimization/16045] ICE fold check: original tree changed by fold

[belyshev at depni dot sinp dot msu dot ru]

------- Additional Comments From belyshev at depni dot sinp dot msu dot ru  2005-06-15 10:42 -------
Ada frontend fails to bootstrap with --enable-checking=fold:

stage1/xgcc -Bstage1/ -B/usr/x86_64-linux/bin/ -c   -g -O2 -DIN_GCC   -W -Wall
-Wwrite-strings -Wstrict-prototypes -Wmissing-prototypes     -fno-common  
-DHAVE_CONFIG_H    -I. -Iada -I../../src/gcc -I../../src/gcc/ada
-I../../src/gcc/../include -I../../src/gcc/../libcpp/include 
../../src/gcc/ada/adaint.c -o ada/adaint.o
../../src/gcc/ada/adaint.c: In function '__gnat_locate_exec':
../../src/gcc/ada/adaint.c:2018: internal compiler error: fold check: original
tree changed by fold

testcase:
------------------------------------------------------------------------------
char *strstr (const char *, const char *);

char *__gnat_locate_exec (char *exec_name)
{
  return strstr (exec_name, "");
}
------------------------------------------------------------------------------

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16045

[Bug tree-optimization/16045] ICE fold check: original tree changed by fold

[belyshev at depni dot sinp dot msu dot ru]

------- Additional Comments From belyshev at depni dot sinp dot msu dot ru  2005-06-15 18:23 -------
here is an updated list of failing tests:

gcc.c-torture/compile/20020701-1.c
gcc.c-torture/execute/builtins/memmove-2.c
gcc.c-torture/execute/builtins/strcat.c
gcc.c-torture/execute/builtins/strncat.c
gcc.c-torture/execute/builtins/strncpy.c
gcc.c-torture/execute/builtins/strstr-asm.c
gcc.c-torture/execute/builtins/strstr.c
gcc.c-torture/execute/memcpy-bi.c
gcc.c-torture/execute/string-opt-18.c
gcc.dg/builtins-10.c
gcc.dg/builtins-21.c
gcc.dg/builtins-26.c
gcc.dg/builtins-2.c
gcc.dg/builtins-47.c
gcc.dg/builtins-52.c
gcc.dg/builtins-7.c
gcc.dg/pr19402-1.c
gcc.dg/torture/builtin-explog-1.c
gcc.dg/torture/builtin-integral-1.c
gcc.dg/unordered-1.c

all of them look similar, here are some of them, reduced:
------------------------------------------------------------------------------
char *strcpy (char *, const char *);
char *strcat (char *, const char *);
double pow (double, double);
double fabs (double);
double sqrt (double);

void f (char *s)
{
  strcpy (s, s);
}

void f (char *s)
{
  strcat (s, "");
}

void f (double x)
{
  pow (pow (x, 2.0), 0.5);
}

void f (double x)
{
  fabs (sqrt (x) + 2.0);
}

void f (double x)
{
  __builtin_powi (x, 1.0);
}
------------------------------------------------------------------------------


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2005-06-15 18:23:18
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16045

[Bug tree-optimization/16045] ICE fold check: original tree changed by fold

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-07-04 19:17 -------
Mine, patch posted: <http://gcc.gnu.org/ml/gcc-patches/2005-07/msg00211.html>.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |pinskia at gcc dot gnu dot
                   |dot org                     |org
                URL|                            |http://gcc.gnu.org/ml/gcc-
                   |                            |patches/2005-
                   |                            |07/msg00211.html
             Status|NEW                         |ASSIGNED
           Keywords|                            |patch


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16045

[Bug middle-end/16045] ICE fold check: original tree changed by fold

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-08-18 05:01 -------
Fixed.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
          Component|tree-optimization           |middle-end
         Resolution|                            |FIXED
   Target Milestone|---                         |4.1.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16045

[Bug middle-end/16045] ICE fold check: original tree changed by fold

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-18 05:02 -------
Subject: Bug 16045

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	pinskia@gcc.gnu.org	2005-08-18 05:01:47

Modified files:
	gcc            : ChangeLog builtins.c 

Log message:
	2005-08-18  Andrew Pinski  <pinskia@physics.uc.edu>
	
	PR middle-end/16045
	* builtins.c (fold_builtin): Create a new NOP_EXPR all the time.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9768&r2=2.9769
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/builtins.c.diff?cvsroot=gcc&r1=1.470&r2=1.471



-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16045

[Bug tree-optimization/16045] ICE fold check: original tree changed by fold

[pinskia at gcc dot gnu dot org]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|                            |ice-on-valid-code


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16045