https://gcc.gnu.org/bugzilla/show_bug.cgi?id=71860
Bug ID: 71860
Summary: ICE on pointing to null(mold), verify_gimple failed
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: fortran
Assignee: unassigned at gcc dot gnu.org
Reporter: gerhard.steinmetz.fort...@t-online.de
Target Milestone: ---
ICE with experimental (--enable-checking=yes) versions 7, 6,
and maybe older.
$ cat z1.f90
program p
class(*), pointer :: z
z => null(z)
end
$ gfortran-6 -g -O0 -Wall -fcheck=all -fno-frontend-optimize z1.f90
$ a.out
$ gfortran-7 z1.f90 # release
$ a.out
$ gfortran-7-20160710 z1.f90 # experimental
z1.f90:1:0:
program p
Error: conversion of register to a different size
VIEW_CONVERT_EXPR<struct __class__STAR_p>(_1);
z = VIEW_CONVERT_EXPR<struct __class__STAR_p>(_1);
z1.f90:1:0: internal compiler error: verify_gimple failed
0xc48e8d verify_gimple_in_seq(gimple*)
../../gcc/tree-cfg.c:4879
0x9c9ec2 gimplify_body(tree_node*, bool)
../../gcc/gimplify.c:11710
0x9ca256 gimplify_function_tree(tree_node*)
../../gcc/gimplify.c:11798
0x8360b7 cgraph_node::analyze()
../../gcc/cgraphunit.c:625
0x839443 analyze_functions
../../gcc/cgraphunit.c:1086
0x83a128 symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2543
