[Bug fortran/21902] New: ICE in build_array_type, at tree.c:4581

[Bug fortran/21902] New: ICE in build_array_type, at tree.c:4581

[schnetter at aei dot mpg dot de]

The attached source code leads to the error message 
 
internal compiler error: tree check: expected class 'type', have  
'declaration' (label_decl) in build_array_type, at tree.c:4581  
 
when compiled with GNU Fortran 95 (GCC 4.1.0 20050603 (experimental)) 
 
/home/eschnett/gcc/bin/gfortran -ftrapv -march=pentium4 -malign-double -g3 
-Wall -Wshadow -c -o driftcorrect.F90.o driftcorrect.f90

-- 
           Summary: ICE in build_array_type, at tree.c:4581
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: fortran
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: schnetter at aei dot mpg dot de
                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-linux-gnu


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21902

[Bug fortran/21902] ICE in build_array_type, at tree.c:4581

[schnetter at aei dot mpg dot de]

------- Additional Comments From schnetter at aei dot mpg dot de  2005-06-03 18:25 -------
Created an attachment (id=9022)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9022&action=view)
Failing gzipped source code


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21902

[Bug fortran/21902] ICE in build_array_type, at tree.c:4581

[schnetter at aei dot mpg dot de]

------- Additional Comments From schnetter at aei dot mpg dot de  2005-06-04 23:15 -------
I tried to reduce the failing source code, but failed to achieve much.  
Depending on what lines I remove, the error changes, sometimes turning into a 
bare "segmentation fault".  Even renaming the source file can make the error 
go away. 
 
With a different source file (much smaller; attached) and such a bare 
segmentation fault, I get the following stack backtrace from valgrind: 
 
$ valgrind --log-file=gfortran --trace-children=yes ~/gcc/bin/gfortran -c 
transform_global.f90  
/home/eschnett/Calpha/Cactus/arrangements/LSUDevelopment/HyperGR_MoL/src/transform_global.F90: 
In function 'local2global': 
/home/eschnett/Calpha/Cactus/arrangements/LSUDevelopment/HyperGR_MoL/src/transform_global.F90:112: 
internal compiler error: Segmentation fault 
 
==28630== My PID = 28630, parent PID = 28629.  Prog and args are: 
==28630==    /home/eschnett/gcc/libexec/gcc/i686-pc-linux-gnu/4.1.0/f951 
==28630==    transform_global.f90 
==28630==    -quiet 
==28630==    -dumpbase 
==28630==    transform_global.f90 
==28630==    -mtune=pentiumpro 
==28630==    -auxbase 
==28630==    transform_global 
==28630==    -o 
==28630==    /tmp/ccT8xxXE.s 
==28630== For more details, rerun with: -v 
==28630==  
==28630== Invalid read of size 4 
==28630==    at 0x8099EDE: gfc_conv_scalarized_array_ref (trans-array.c:1578) 
==28630==    by 0x8099F9F: gfc_conv_array_ref (trans-array.c:1622) 
==28630==    by 0x80A6912: gfc_conv_variable (trans-expr.c:420) 
==28630==    by 0x80B20DC: set_string (trans-io.c:403) 
==28630==    by 0x80B38E2: build_dt (trans-io.c:1066) 
==28630==    by 0x80B3A22: gfc_trans_write (trans-io.c:1188) 
==28630==    by 0x80970E4: gfc_trans_code (trans.c:595) 
==28630==    by 0x80B4B43: gfc_trans_if_1 (trans-stmt.c:423) 
==28630==    by 0x809702E: gfc_trans_code (trans.c:547) 
==28630==    by 0x80B4B03: gfc_trans_if_1 (trans-stmt.c:413) 
==28630==    by 0x80B4B54: gfc_trans_if_1 (trans-stmt.c:427) 
==28630==    by 0x809702E: gfc_trans_code (trans.c:547) 
==28630==  Address 0xC4 is not stack'd, malloc'd or (recently) free'd 
 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21902

[Bug fortran/21902] ICE in build_array_type, at tree.c:4581

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2005-06-05 06:48 -------
Note I started to reduce this and removed a whole function or two and was able to reduce further but I 
stoped because I ran out of time.

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


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21902

[Bug fortran/21902] ICE in build_array_type, at tree.c:4581

[schnetter at aei dot mpg dot de]

------- Additional Comments From schnetter at aei dot mpg dot de  2005-06-05 18:07 -------
Created an attachment (id=9034)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=9034&action=view)
Failing source code


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21902

[Bug fortran/21902] ICE in build_array_type, at tree.c:4581

[schnetter at aei dot mpg dot de]

------- Additional Comments From schnetter at aei dot mpg dot de  2005-06-05 19:29 -------
This segmentation fault seems to be caused by the combination of the 
declaration 
 
    character :: msg(100) 
 
and the statement 
 
          write (msg, '("Error in call to GESV, info=",i2)') info 
 
Note that the declaration declares an array of 100 strings, each one character 
long.  (This is not what I intended.) 
 

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21902

[Bug fortran/21902] ICE in build_array_type, at tree.c:4581

[reichelt at gcc dot gnu dot org]

------- Additional Comments From reichelt at gcc dot gnu dot org  2005-06-07 23:46 -------
This seems to be a duplicate of our famous bug PR 15966.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21902

[Bug fortran/21902] ICE in build_array_type, at tree.c:4581

[fxcoudert at gcc dot gnu dot org]

------- Additional Comments From fxcoudert at gcc dot gnu dot org  2005-06-18 20:17 -------
Yes it is (same backtrace and all). Well, PR15966 was GCC's most reported bug,
but this was an ex aequo. Now, it's be a not-for-share gold medal.

*** This bug has been marked as a duplicate of 15966 ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=21902