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From: "pinskia at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/104523] G++ crash when compiling a simple module that
 includes pybind11/stl.h
Date: Sun, 13 Feb 2022 23:57:30 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D104523

--- Comment #3 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
apinski@xeond:~/src/upstream-gcc$ ~/upstream-gcc/bin/gcc  t.ii -std=3Dc++20
-fmodules-ts
PyBind11Module.cpp:5:9: internal compiler error: tree check: expected none =
of
template_decl, have template_decl in add_specializations, at cp/module.cc:1=
2971
0x8f8f58 tree_not_check_failed(tree_node const*, char const*, int, char con=
st*,
...)
        /home/apinski/src/upstream-gcc/gcc/gcc/tree.c:8739
0x75c6b1 tree_not_check(tree_node*, char const*, int, char const*, tree_cod=
e)
        /home/apinski/src/upstream-gcc/gcc/gcc/tree.h:3450
0x75c6b1 depset::hash::add_specializations(bool)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:12971
0xb00fa5 module_state::write(elf_out*, cpp_reader*)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:17606
0xb02590 finish_module_processing(cpp_reader*)
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/module.cc:19876
0xa92a5b c_parse_final_cleanups()
        /home/apinski/src/upstream-gcc/gcc/gcc/cp/decl2.c:5310
Please submit a full bug report,
with preprocessed source if appropriate.
Please include the complete backtrace with any bug report.
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Reducing.=