This bug has been around for awhile on the 4.3 branch. Not present in 4.4.
Executing on host: /mnt/gnu/gcc/objdir/gcc/testsuite/gfortran/../../gfortran -B/ mnt/gnu/gcc/objdir/gcc/testsuite/gfortran/../../ /mnt/gnu/gcc/gcc/gcc/testsuite/ gfortran.dg/parameter_array_init_3.f90 -O -pedantic-errors -S -o parameter_ array_init_3.s (timeout = 300) f951: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. compiler exited with status 1 output is: f951: internal compiler error: Segmentation fault Please submit a full bug report, with preprocessed source if appropriate. See <http://gcc.gnu.org/bugs.html> for instructions. FAIL: gfortran.dg/parameter_array_init_3.f90 -O (internal compiler error) FAIL: gfortran.dg/parameter_array_init_3.f90 -O (test for excess errors) Excess errors: f951: internal compiler error: Segmentation fault (gdb) r Starting program: /mnt/gnu/gcc/objdir/gcc/f951 /mnt/gnu/gcc/gcc/gcc/testsuite/gfortran.dg/parameter_array_init_3.f90 -quiet -dumpbase parameter_array_init_3.f90 -auxbase-strip parameter_array_init_3.s -O -pedantic-errors -version -o parameter_array_init_3.s -fintrinsic-modules-path finclude warning: Private mapping of shared library text was not specified by the executable; setting a breakpoint in a shared library which is not privately mapped will not work. See the HP-UX 11i v3 chatr manpage for methods to privately map shared library text. warning: Loadable segment ".tbss" outside of ELF segments warning: Loadable segment ".tbss" outside of ELF segments GNU F95 (GCC) version 4.3.3 20081229 (prerelease) [gcc-4_3-branch revision 142953] (hppa64-hp-hpux11.11) compiled by GNU C version 4.3.3 20081229 (prerelease) [gcc-4_3-branch revision 142953], GMP version 4.2.2, MPFR version 2.3.1. GGC heuristics: --param ggc-min-expand=100 --param ggc-min-heapsize=131072 Program received signal SIGSEGV, Segmentation fault. 0x400000000070efb0 in __gmpz_add () (gdb) bt #0 0x400000000070efb0 in __gmpz_add () #1 0x4000000000173894 in simplify_const_ref (p=0x8000000100130e58) at ../../gcc/gcc/fortran/expr.c:1049 #2 0x4000000000174134 in gfc_simplify_expr (p=0x8000000100130e58, type=1) at ../../gcc/gcc/fortran/expr.c:1700 #3 0x40000000001745a8 in simplify_parameter_variable (p=0x8000000100130120, type=1) at ../../gcc/gcc/fortran/expr.c:1567 #4 0x4000000000174110 in gfc_simplify_expr (p=0x8000000100130120, type=1) at ../../gcc/gcc/fortran/expr.c:1672 #5 0x4000000000150fd0 in expand_constructor (c=0x8000000100130990) at ../../gcc/gcc/fortran/array.c:1385 #6 0x4000000000151290 in expand_constructor (c=0x800000010012f928) at ../../gcc/gcc/fortran/array.c:1262 #7 0x4000000000151778 in gfc_array_size (array=0x8000000100130490, result=0x800003fffdff18c8) at ../../gcc/gcc/fortran/array.c:1983 #8 0x4000000000151f2c in gfc_array_dimen_size (array=0x8000000100132028, dimen=1, result=0x8) at ../../gcc/gcc/fortran/array.c:1940 #9 0x40000000001bae50 in expression_rank (e=0x8000000100130490) at ../../gcc/gcc/fortran/resolve.c:4007 #10 0x40000000001bc8d4 in gfc_resolve_expr (e=0x8000000100130490) at ../../gcc/gcc/fortran/resolve.c:4383 #11 0x40000000001757e0 in gfc_match_init_expr (result=0x800003fffdff1410) at ../../gcc/gcc/fortran/expr.c:2379 ---Type <return> to continue, or q <return> to quit--- #12 0x40000000001684c0 in gfc_match_data_decl () at ../../gcc/gcc/fortran/decl.c:1743 #13 0x40000000001ab530 in match_word (str=0x8000000100132028 "\200", subr=0x4000000000136070, old_locus=0x800003fffdff12c0) at ../../gcc/gcc/fortran/parse.c:64 #14 0x40000000001abee4 in decode_statement () at ../../gcc/gcc/fortran/parse.c:280 #15 0x40000000001ad9b4 in next_statement () at ../../gcc/gcc/fortran/parse.c:652 #16 0x40000000001af76c in parse_spec (st=ST_DATA_DECL) at ../../gcc/gcc/fortran/parse.c:2179 #17 0x40000000001b251c in gfc_parse_file () at ../../gcc/gcc/fortran/parse.c:3395 #18 0x40000000001e6c0c in gfc_be_parse_file ( set_yydebug=<value optimized out>) at ../../gcc/gcc/fortran/f95-lang.c:260 #19 0x400000000042ca7c in toplev_main (argc=<value optimized out>, argv=<value optimized out>) at ../../gcc/gcc/toplev.c:1042 #20 0x400000000023188c in main (argc=1253416, argv=0x8) at ../../gcc/gcc/main.c:35 -- Summary: FAIL: gfortran.dg/parameter_array_init_3.f90 -O (internal compiler error) Product: gcc Version: 4.3.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: fortran AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: danglin at gcc dot gnu dot org GCC build triplet: hppa64-hp-hpux11.11 GCC host triplet: hppa64-hp-hpux11.11 GCC target triplet: hppa64-hp-hpux11.11 http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38675