https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106820
--- Comment #3 from Mark Millard <markmigm at gmail dot com> ---
(In reply to Mark Millard from comment #2)
I managed to build lang/gcc12 with -g -O0 in use and so
can report:
The failing assert looks like:
gcc_assert ((!DECL_WEAK (node->decl)
&& !DECL_COMDAT (node->decl))
|| TREE_PUBLIC (node->decl)
|| node->weakref
|| DECL_EXTERNAL (node->decl));
And in a debugger I see:
(lldb) print node->decl->decl_with_vis.weak_flag
(unsigned int) $2 = 1
(lldb) print node->decl->decl_with_vis.comdat_flag
(unsigned int) $3 = 0
(lldb) print node->weakref
(unsigned int) $4 = 0
(lldb) print node->decl->decl_common.decl_flag_1
(unsigned int) $5 = 0
and:
(lldb) call debug_tree(node->decl)
<function_decl 0x9986ca00 __gthrw_pthread_mutex_unlock
type <function_type 0x939e7e70
type <integer_type 0x8cd415e8 int sizes-gimplified public type_6 SI
size <integer_cst 0x8cd40258 constant 32>
unit-size <integer_cst 0x8cd40270 constant 4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x8cd415e8 precision:32 min <integer_cst 0x8cd40210 -2147483648> max
<integer_cst 0x8cd40228 2147483647>
pointer_to_this <pointer_type 0x8cd48a80> reference_to_this
<reference_type 0x9bb63000>>
SI size <integer_cst 0x8cd40258 32> unit-size <integer_cst 0x8cd40270
4>
align:32 warn_if_not_align:0 symtab:0 alias-set -1 canonical-type
0x939e7f18
arg-types <tree_list 0x9986d168 value <pointer_type 0x939e7a80>
chain <tree_list 0x8cd2b938 value <void_type 0x8cd41f18 void>>>
pointer_to_this <pointer_type 0x99870150>>
addressable used static tree_3 weak in_system_header decl_5 decl_6 DI
/usr/local/lib/gcc12/include/c++/aarch64-portbld-freebsd14.0/bits/gthr-default.h:121:1
align:32 warn_if_not_align:0 context <translation_unit_decl 0x8cd3e000
module_shared_ptr_alias_construction_failure.cpp>
attributes <tree_list 0x9986d230
purpose <identifier_node 0x939ca980 alias
normal local bindings <0x0>>
value <tree_list 0x9986d258
value <string_cst 0x939c6d80 type <array_type 0x939e77e0>
readonly constant static "pthread_mutex_unlock\000">>
chain <tree_list 0x9986d280
purpose <identifier_node 0x939ca9c0 weakref
normal local bindings <0x0>>>>
full-name "int __gthrw_pthread_mutex_unlock(pthread_mutex**)"
module 1:/usr/local/lib/gcc12/include/c++/memory exported chain
<function_decl 0x9986c900 __gthread_trigger>>
