https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100326
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Keywords| |ice-on-invalid-code
Status|UNCONFIRMED |NEW
Last reconfirmed| |2021-04-29
--- Comment #1 from Richard Biener <rguenth at gcc dot gnu.org> ---
Confirmed.
#0 0x0000000000d66842 in cp_parser_pragma_unroll (parser=0x7ffff65977b8,
pragma_tok=0x7ffff7f2f0c8)
at /home/rguenther/src/gcc3/gcc/cp/parser.c:44896
44896 if (!INTEGRAL_TYPE_P (TREE_TYPE (expr))
(gdb) l
44891 location_t location = cp_lexer_peek_token (parser->lexer)->location;
44892 tree expr = cp_parser_constant_expression (parser);
44893 unsigned short unroll;
44894 expr = maybe_constant_value (expr);
44895 HOST_WIDE_INT lunroll = 0;
44896 if (!INTEGRAL_TYPE_P (TREE_TYPE (expr))
44897 || TREE_CODE (expr) != INTEGER_CST
44898 || (lunroll = tree_to_shwi (expr)) < 0
44899 || lunroll >= USHRT_MAX)
44900 {
(gdb) p debug_tree (expr)
<call_expr 0x7ffff66dc990
fn <parm_decl 0x7ffff66de000 v
type <template_type_parm 0x7ffff66ccf18 T type_0 type_6 VOID
align:8 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x7ffff66ccf18
index 0 level 1 orig_level 1
chain <type_decl 0x7ffff6597850 T>>
used VOID t.ii:1:31
align:8 warn_if_not_align:0 context <function_decl 0x7ffff66cde00 f>>
t.ii:2:25 start: t.ii:2:24 finish: t.ii:2:26>
so we parsed this to an invalid GENERIC CALL_EXPR with a NULL TREE_TYPE
(gdb) p expr->typed.type
$3 = <tree 0x0>
it should have at least been error_mark_node (or void_type_node).
