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

["schnetter at aei dot mpg dot de" <gcc-bugzilla at gcc dot gnu dot org>]

------- 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 
 

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