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typeof_unqual outside C2X using alternate keyword #76423

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crosdahl opened this issue Dec 27, 2023 · 1 comment · Fixed by #87392
Closed

typeof_unqual outside C2X using alternate keyword #76423

crosdahl opened this issue Dec 27, 2023 · 1 comment · Fixed by #87392
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c23 clang:frontend Language frontend issues, e.g. anything involving "Sema" extension:gnu

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@crosdahl
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gcc has __typeof_unqual__ as an alternate spelling for typeof_unqual which works in all c versions.
gcc docs reference: https://gcc.gnu.org/onlinedocs/gcc/Typeof.html
@EugeneZelenko EugeneZelenko added clang:frontend Language frontend issues, e.g. anything involving "Sema" extension:gnu and removed new issue labels Dec 27, 2023
@llvmbot
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llvmbot commented Dec 27, 2023

@llvm/issue-subscribers-clang-frontend

Author: None (crosdahl)

gcc has `__typeof_unqual__` as an alternate spelling for `typeof_unqual` which works in all c versions. gcc docs reference: https://gcc.gnu.org/onlinedocs/gcc/Typeof.html

@nathanchance nathanchance mentioned this issue Apr 2, 2024
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nathanchance added a commit that referenced this issue Apr 3, 2024
@nathanchance
[clang] Support __typeof_unqual__ in all C modes (#87392)
cc308f6 
GCC has added __typeof_unqual__ to allow typeof_unqual to be used in all
C modes (not just C23 and newer), similar to __typeof__ and typeof.

https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=607d9d50ee44163cee621cd991600acaf78c2fee

The Linux kernel would like to start using __typeof_unqual__ to strip
type qualifiers such as address spaces from inputs to macros but cannot
switch to C23 due to compiler version requirements.

Match GCC and allow __typeof_unqual__ in all C modes.

Closes: #76423
Link: https://lore.kernel.org/CAFULd4YG21NdF_qNVBGDtXO6xnaYFeRPvKicB=gpgUUqYE=4jw@mail.gmail.com/
qihangkong pushed a commit to rvgpu/llvm that referenced this issue Apr 18, 2024
@nathanchance
[clang] Support __typeof_unqual__ in all C modes
11f9bdd 
GCC has added __typeof_unqual__ to allow typeof_unqual to be used in all
C modes (not just C23 and newer), similar to __typeof__ and typeof.

https://gcc.gnu.org/git/?p=gcc.git;a=commit;h=607d9d50ee44163cee621cd991600acaf78c2fee

The Linux kernel would like to start using __typeof_unqual__ to strip
type qualifiers such as address spaces from inputs to macros but cannot
switch to C23 due to compiler version requirements.

Match GCC and allow __typeof_unqual__ in all C modes.

Closes: llvm/llvm-project#76423
Link: https://lore.kernel.org/CAFULd4YG21NdF_qNVBGDtXO6xnaYFeRPvKicB=gpgUUqYE=4jw@mail.gmail.com/
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
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[clang] Support __typeof_unqual__ in all C modes nathanchance/llvm-project
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@EugeneZelenko @llvmbot @crosdahl