https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99840
Bug ID: 99840
Summary: [9/10/11 Regression] ICE in gfc_simplify_matmul, at
fortran/simplify.c:4777
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gs...@t-online.de
Target Milestone: ---
Started with r8, compiles with r7 :
$ cat z1.f90
program p
integer, parameter :: x(0,0) = 0
integer :: y(0,0)
y = matmul(x, transpose(x))
end
$ gfortran-7 -c z1.f90
$
$ gfortran-11-20210328 -c z1.f90
f951: internal compiler error: Segmentation fault
0xc09d4f crash_signal
../../gcc/toplev.c:327
0x716f87 gfc_simplify_matmul(gfc_expr*, gfc_expr*)
../../gcc/fortran/simplify.c:4777
0x69b9d3 do_simplify
../../gcc/fortran/intrinsic.c:4664
0x6a63fa gfc_intrinsic_func_interface(gfc_expr*, int)
../../gcc/fortran/intrinsic.c:5050
0x6f5699 resolve_unknown_f
../../gcc/fortran/resolve.c:2926
0x6f5699 resolve_function
../../gcc/fortran/resolve.c:3270
0x6f5699 gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:7105
0x6fbb24 gfc_resolve_expr(gfc_expr*)
../../gcc/fortran/resolve.c:11728
0x6fbb24 gfc_resolve_code(gfc_code*, gfc_namespace*)
../../gcc/fortran/resolve.c:11824
0x6fd0b7 resolve_codes
../../gcc/fortran/resolve.c:17395
0x6fd17e gfc_resolve(gfc_namespace*)
../../gcc/fortran/resolve.c:17430
0x6e56e4 resolve_all_program_units
../../gcc/fortran/parse.c:6290
0x6e56e4 gfc_parse_file()
../../gcc/fortran/parse.c:6542
0x7320ef gfc_be_parse_file
../../gcc/fortran/f95-lang.c:212
