https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79412
Bug ID: 79412
Summary: ICE in fold_convert_loc, at fold-const.c:2239
Product: gcc
Version: 7.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: gerhard.steinmetz.fort...@t-online.de
Target Milestone: ---
With invalid code down to at least gcc 4.8 (configured with
--enable-checking=yes) on x86_64 GNU/Linux.
(official releases: confused by earlier errors, bailing out)
$ cat z1.c
int a;
void fn1 ()
{
a++;
}
int a[] = {2};
$ gcc-7-20170205 -c z1.c
z1.c:6:5: error: conflicting types for 'a'
int a[] = {2};
^
z1.c:1:5: note: previous declaration of 'a' was here
int a;
^
z1.c: In function 'fn1':
z1.c:4:4: internal compiler error: in fold_convert_loc, at fold-const.c:2239
a++;
~^~
0x90910f fold_convert_loc(unsigned int, tree_node*, tree_node*)
../../gcc/fold-const.c:2238
0x97abe8 gimplify_self_mod_expr(tree_node**, gimple**, gimple**, bool,
tree_node*)
../../gcc/gimplify.c:2966
0x973f70 gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gimplify.c:11135
0x9773e6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gimplify.c:6478
0x9786cd gimplify_bind_expr
../../gcc/gimplify.c:1290
0x9745ba gimplify_expr(tree_node**, gimple**, gimple**, bool (*)(tree_node*),
int)
../../gcc/gimplify.c:11402
0x9773e6 gimplify_stmt(tree_node**, gimple**)
../../gcc/gimplify.c:6478
0x9793b9 gimplify_body(tree_node*, bool)
../../gcc/gimplify.c:12396
0x979a54 gimplify_function_tree(tree_node*)
../../gcc/gimplify.c:12554
0x7f17c7 cgraph_node::analyze()
../../gcc/cgraphunit.c:655
0x7f4ce3 analyze_functions
../../gcc/cgraphunit.c:1116
0x7f5a3a symbol_table::finalize_compilation_unit()
../../gcc/cgraphunit.c:2597
