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From: "nickhuang99 at hotmail dot com" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug c++/92010] [8/9 Regression] gcc internal error since 8x on
 warning write-strings
Date: Tue, 05 Oct 2021 09:55:13 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D92010

qingzhe huang <nickhuang99 at hotmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nickhuang99 at hotmail dot=
 com

--- Comment #11 from qingzhe huang <nickhuang99 at hotmail dot com> ---
The testcase g++.dg/cpp2a/lambda-uneval11.C still suffers a segment fault if
run by compiler cc1plus with latest code. And gdb shows that global var
"current_function_decl" is set to 0 when crashed. Should we reopen this bug?



./install/libexec/gcc/x86_64-unknown-linux-gnu/12.0.0/cc1plus -std=3Dc++20
gcc-clone/gcc/testsuite/g++.dg/cpp2a/lambda-uneval11.C
 <lambda()> void spam(decltype (<lambda>) (*)[sizeof (T)]) void foo()
<lambda()> static constexpr void<lambda()>::_FUN()
constexpr<lambda()>::operator void (*)()() const <lambda()> static constexpr
void<lambda()>::_FUN() constexpr<lambda()>::operator void (*)()() const
<lambda()> static constexpr void<lambda()>::_FUN()
constexpr<lambda()>::operator void (*)()() const <lambda()> static constexpr
void<lambda()>::_FUN() constexpr<lambda()>::operator void (*)()() const
constexpr<lambda()>::operator void (*)()() const <lambda()> static constexpr
void<lambda()>::_FUN() constexpr<lambda()>::operator void (*)()() const
gcc-clone/gcc/testsuite/g++.dg/cpp2a/lambda-uneval11.C: In instantiation of
=E2=80=98constexpr<lambda()>::operator void (*)()() const=E2=80=99:
gcc-clone/gcc/testsuite/g++.dg/cpp2a/lambda-uneval11.C:9:12:   required from
here
gcc-clone/gcc/testsuite/g++.dg/cpp2a/lambda-uneval11.C:4:25: internal compi=
ler
error: Segmentation fault
    4 | template <class T> void spam(decltype([]{}) (*s)[sizeof(T)] =3D nul=
lptr)
      |                         ^~~~
Please submit a full bug report,
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See <https://gcc.gnu.org/bugs/> for instructions.=