https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103329
Jakub Jelinek <jakub at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |jakub at gcc dot gnu.org
--- Comment #3 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
The problem seems that in order to print the *.original dump (but apparently
also in order to emit some warnings), we trigger:
#0 used_types_insert (t=<enumeral_type 0x7fffea1d4b28 ._anon_0>) at
../../gcc/function.c:6422
#1 0x0000000000c26eb6 in mark_used (decl=<const_decl 0x7fffea1c2380 __value>,
complain=0) at ../../gcc/cp/decl2.c:5681
#2 0x0000000000dee6f0 in tsubst_qualified_id (qualified_id=<scope_ref
0x7fffea1c4258>, args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl
0x7fffea1c5130 __promote_2>,
done=true, address_p=false) at ../../gcc/cp/pt.c:16460
#3 0x0000000000e03d01 in tsubst_copy_and_build (t=<scope_ref 0x7fffea1c4258>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>,
function_p=false, integral_constant_expression_p=true) at
../../gcc/cp/pt.c:20046
#4 0x0000000000e0041a in tsubst_expr (t=<scope_ref 0x7fffea1c4258>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>,
integral_constant_expression_p=true) at ../../gcc/cp/pt.c:19228
#5 0x0000000000dd88cf in tsubst_template_arg (t=<scope_ref 0x7fffea1c4258>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>)
at ../../gcc/cp/pt.c:12342
#6 0x0000000000ddcca6 in tsubst_template_args (t=<tree_vec 0x7fffea1c41e0>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>)
at ../../gcc/cp/pt.c:13433
#7 0x0000000000ddd9e7 in tsubst_aggr_type (t=<record_type 0x7fffea1ab7e0
__promote>, args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl
0x7fffea1c5130 __promote_2>,
entering_scope=0) at ../../gcc/cp/pt.c:13637
#8 0x0000000000deaa22 in tsubst (t=<record_type 0x7fffea1ab7e0 __promote>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>)
at ../../gcc/cp/pt.c:15527
#9 0x0000000000de7c32 in tsubst_decl (t=<type_decl 0x7fffea1c5130
__promote_2>, args=<tree_vec 0x7fffea1dbe38>, complain=0) at
../../gcc/cp/pt.c:14825
#10 0x0000000000dea26e in tsubst (t=<type_decl 0x7fffea1c5130 __promote_2>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<template_decl
0x7fffea1c1380 __promote_2>)
at ../../gcc/cp/pt.c:15447
#11 0x0000000000e0ac1c in instantiate_template_1 (tmpl=<template_decl
0x7fffea1c1380 __promote_2>, orig_args=<tree_vec 0x7fffea1dbe38>, complain=0)
at ../../gcc/cp/pt.c:21337
#12 0x0000000000e0b2f2 in instantiate_template (tmpl=<template_decl
0x7fffea1c1380 __promote_2>, orig_args=<tree_vec 0x7fffea1dbe38>, complain=0)
at ../../gcc/cp/pt.c:21396
#13 0x0000000000e0b466 in instantiate_alias_template (tmpl=<template_decl
0x7fffea1c1380 __promote_2>, args=<tree_vec 0x7fffea1dbe38>, complain=0) at
../../gcc/cp/pt.c:21434
#14 0x0000000000dea49d in tsubst (t=<record_type 0x7fffea1aba80 __promote_2>,
args=<tree_vec 0x7fffea1d08e8>, complain=0, in_decl=<tree 0x0>) at
../../gcc/cp/pt.c:15472
#15 0x0000000000c2e7e1 in dump_template_bindings (pp=0x3e0c5a0
<actual_pretty_printer>, parms=<tree 0x0>, args=<tree_vec 0x7fffea1d08e8>,
typenames=0x7fffea1dbd98 = {...})
at ../../gcc/cp/error.c:482
#16 0x0000000000c34a2f in dump_substitution (pp=0x3e0c5a0
<actual_pretty_printer>, t=<template_decl 0x7fffea1c1500 pow>,
template_parms=<tree_list 0x7fffea1c44b0>,
template_args=<tree_vec 0x7fffea1d08e8>, flags=4) at
../../gcc/cp/error.c:1638
#17 0x0000000000c365d1 in dump_function_decl (pp=0x3e0c5a0
<actual_pretty_printer>, t=<template_decl 0x7fffea1c1500 pow>, flags=4) at
../../gcc/cp/error.c:1797
#18 0x0000000000c33917 in dump_decl (pp=0x3e0c5a0 <actual_pretty_printer>,
t=<function_decl 0x7fffea1d7000 pow>, flags=4) at ../../gcc/cp/error.c:1369
#19 0x0000000000c3cf88 in decl_as_string (decl=<function_decl 0x7fffea1d7000
pow>, flags=4) at ../../gcc/cp/error.c:3118
#20 0x0000000000c3d060 in lang_decl_name (decl=<function_decl 0x7fffea1d7000
pow>, v=2, translate=false) at ../../gcc/cp/error.c:3153
#21 0x0000000000e8b59f in cxx_printable_name_internal (decl=<function_decl
0x7fffea1d7000 pow>, v=2, translate=false) at ../../gcc/cp/tree.c:2678
#22 0x0000000000e8b63c in cxx_printable_name (decl=<function_decl
0x7fffea1d7000 pow>, v=2) at ../../gcc/cp/tree.c:2687
#23 0x0000000000f4f4c3 in c_genericize (fndecl=<function_decl 0x7fffea1d7000
pow>) at ../../gcc/c-family/c-gimplify.c:587
where when trying to print the pow decl into the dump file, we instantiate the
template and that
leads to adding the anonymous enum to types_used_by_cur_var_decl vector (or
attached to current function).
Later on we do in cp_finish_decl
8260 /* So decl is a global variable or a static member of a
8261 non local class. Record the types it uses
8262 so that we can decide later to emit debug info for them. */
8263 record_types_used_by_current_var_decl (decl);
and attach those types to a random unrelated decl (a guard variable in this
case).
Similarly, without -fdump-tree-original and without -w, we trigger it during:
#0 used_types_insert (t=<enumeral_type 0x7fffea1d4b28 ._anon_0>) at
../../gcc/function.c:6422
#1 0x0000000000c26eb6 in mark_used (decl=<const_decl 0x7fffea1c2380 __value>,
complain=0) at ../../gcc/cp/decl2.c:5681
#2 0x0000000000dee6f0 in tsubst_qualified_id (qualified_id=<scope_ref
0x7fffea1c4258>, args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl
0x7fffea1c5130 __promote_2>,
done=true, address_p=false) at ../../gcc/cp/pt.c:16460
#3 0x0000000000e03d01 in tsubst_copy_and_build (t=<scope_ref 0x7fffea1c4258>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>,
function_p=false, integral_constant_expression_p=true) at
../../gcc/cp/pt.c:20046
#4 0x0000000000e0041a in tsubst_expr (t=<scope_ref 0x7fffea1c4258>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>,
integral_constant_expression_p=true) at ../../gcc/cp/pt.c:19228
#5 0x0000000000dd88cf in tsubst_template_arg (t=<scope_ref 0x7fffea1c4258>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>)
at ../../gcc/cp/pt.c:12342
#6 0x0000000000ddcca6 in tsubst_template_args (t=<tree_vec 0x7fffea1c41e0>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>)
at ../../gcc/cp/pt.c:13433
#7 0x0000000000ddd9e7 in tsubst_aggr_type (t=<record_type 0x7fffea1ab7e0
__promote>, args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl
0x7fffea1c5130 __promote_2>,
entering_scope=0) at ../../gcc/cp/pt.c:13637
#8 0x0000000000deaa22 in tsubst (t=<record_type 0x7fffea1ab7e0 __promote>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<type_decl 0x7fffea1c5130
__promote_2>)
at ../../gcc/cp/pt.c:15527
#9 0x0000000000de7c32 in tsubst_decl (t=<type_decl 0x7fffea1c5130
__promote_2>, args=<tree_vec 0x7fffea1dbe38>, complain=0) at
../../gcc/cp/pt.c:14825
#10 0x0000000000dea26e in tsubst (t=<type_decl 0x7fffea1c5130 __promote_2>,
args=<tree_vec 0x7fffea1dbe38>, complain=0, in_decl=<template_decl
0x7fffea1c1380 __promote_2>)
at ../../gcc/cp/pt.c:15447
#11 0x0000000000e0ac1c in instantiate_template_1 (tmpl=<template_decl
0x7fffea1c1380 __promote_2>, orig_args=<tree_vec 0x7fffea1dbe38>, complain=0)
at ../../gcc/cp/pt.c:21337
#12 0x0000000000e0b2f2 in instantiate_template (tmpl=<template_decl
0x7fffea1c1380 __promote_2>, orig_args=<tree_vec 0x7fffea1dbe38>, complain=0)
at ../../gcc/cp/pt.c:21396
#13 0x0000000000e0b466 in instantiate_alias_template (tmpl=<template_decl
0x7fffea1c1380 __promote_2>, args=<tree_vec 0x7fffea1dbe38>, complain=0) at
../../gcc/cp/pt.c:21434
#14 0x0000000000dea49d in tsubst (t=<record_type 0x7fffea1aba80 __promote_2>,
args=<tree_vec 0x7fffea1d08e8>, complain=0, in_decl=<tree 0x0>) at
../../gcc/cp/pt.c:15472
#15 0x0000000000c2e7e1 in dump_template_bindings (pp=0x3e0c5a0
<actual_pretty_printer>, parms=<tree 0x0>, args=<tree_vec 0x7fffea1d08e8>,
typenames=0x7fffea1dbd98 = {...})
at ../../gcc/cp/error.c:482
#16 0x0000000000c34a2f in dump_substitution (pp=0x3e0c5a0
<actual_pretty_printer>, t=<template_decl 0x7fffea1c1500 pow>,
template_parms=<tree_list 0x7fffea1c44b0>,
template_args=<tree_vec 0x7fffea1d08e8>, flags=132) at
../../gcc/cp/error.c:1638
#17 0x0000000000c365d1 in dump_function_decl (pp=0x3e0c5a0
<actual_pretty_printer>, t=<template_decl 0x7fffea1c1500 pow>, flags=132) at
../../gcc/cp/error.c:1797
#18 0x0000000000c33917 in dump_decl (pp=0x3e0c5a0 <actual_pretty_printer>,
t=<function_decl 0x7fffea1d7000 pow>, flags=132) at ../../gcc/cp/error.c:1369
#19 0x0000000000c3d5ab in decl_to_string (decl=<function_decl 0x7fffea1d7000
pow>, verbose=1) at ../../gcc/cp/error.c:3217
#20 0x0000000000c41255 in cp_printer (pp=0x3fff130, text=0x7fffffffce90,
spec=0x4001452 "D", precision=0, wide=false, set_locus=false, verbose=true,
quoted=0x7fffffffcaaf,
buffer_ptr=0x4001240) at ../../gcc/cp/error.c:4388
#21 0x0000000002d5af22 in pp_format (pp=0x3fff130, text=0x7fffffffce90) at
../../gcc/pretty-print.c:1475
#22 0x0000000002d5b2fa in pp_format_verbatim (pp=0x3fff130,
text=0x7fffffffce90) at ../../gcc/pretty-print.c:1536
#23 0x0000000002d5bb4e in pp_verbatim (pp=0x3fff130, msg=0x2e32238 "%s: In
instantiation of %q#D:\n") at ../../gcc/pretty-print.c:1790
#24 0x0000000000c3f369 in print_instantiation_full_context (context=0x3f9bf40
<global_diagnostic_context>) at ../../gcc/cp/error.c:3627
#25 0x0000000000c3f86e in maybe_print_instantiation_context (context=0x3f9bf40
<global_diagnostic_context>) at ../../gcc/cp/error.c:3775
#26 0x0000000000c3deb3 in cp_diagnostic_starter (context=0x3f9bf40
<global_diagnostic_context>, diagnostic=0x7fffffffd0a0) at
../../gcc/cp/error.c:3466
#27 0x0000000002d316bb in diagnostic_report_diagnostic (context=0x3f9bf40
<global_diagnostic_context>, diagnostic=0x7fffffffd0a0) at
../../gcc/diagnostic.c:1347
#28 0x0000000002d31d9c in diagnostic_impl (richloc=0x7fffffffd270,
metadata=0x0, opt=714, gmsgid=0x2e2b9a8 "no return statement in function
returning non-void", ap=0x7fffffffd170,
kind=DK_WARNING) at ../../gcc/diagnostic.c:1508
#29 0x0000000002d3277e in warning_at (richloc=0x7fffffffd270, opt=714,
gmsgid=0x2e2b9a8 "no return statement in function returning non-void") at
../../gcc/diagnostic.c:1660
I wonder if the error.c spots that trigger tsubst shouldn't temporarily set
some FE global flag that would either cause
if (TREE_CODE (decl) == CONST_DECL)
used_types_insert (DECL_CONTEXT (decl));
in mark_used not to happen, or perhaps the whole mark_used not to be done
altogether?
