https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123348
Bug ID: 123348
Summary: gfortran: internal compiler error: Segmentation fault
Product: gcc
Version: 15.2.1
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: jabba.laci at gmail dot com
Target Milestone: ---
Created attachment 63185
--> https://gcc.gnu.org/bugzilla/attachment.cgi?id=63185&action=edit
line 66 causes a compiler error
I have a program (see the attachment) that causes a compiler error:
$ gfortran compiler_error.f90
f951: internal compiler error: Segmentation fault
0x250b271 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x250bab0 internal_error(char const*, ...)
???:0
0x72ea6f gfc_find_derived_vtab(gfc_symbol*)
???:0
0x785452 gfc_reduce_init_expr(gfc_expr*)
???:0
0x753b98 gfc_match_char_spec(gfc_typespec*)
???:0
0x7b3e85 gfc_match_type_spec(gfc_typespec*)
???:0
0x7b4032 gfc_match_allocate()
???:0
0x81841a gfc_parse_file()
???:0
Here is the problematic part:
len_alloc = self%total_length() + extra
allocate (character(len=self%total_length() + extra) :: result) ! compiler
error
! allocate (character(len=len_alloc) :: result) ! it's OK
If you put the second line in comment and uncomment the third line, it works.
Environment: Manjaro Linux
$ gfortran --version
GNU Fortran (GCC) 15.2.1 20251112
