static lambda call operator is not convertible to function pointer on win32 #62594
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c++
clang:frontend
Language frontend issues, e.g. anything involving "Sema"
confirmed
Verified by a second party
lambda
C++11 lambda expressions
platform:windows
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@llvm/issue-subscribers-c-1 |
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@llvm/issue-subscribers-clang-frontend |
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@llvm/issue-subscribers-c-2b |
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It took me a moment to spot it, but this is a 32-bit only issue: https://godbolt.org/z/P5zddjE43 |
faisalv
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Sep 16, 2023
…tion pointer on win32 See issue #62594 This code does not work on win32: auto lstatic = []() static { return 0; }; int (*f2)(void) = lstatic; Since a calling convention such as CC_X86ThisCall can rightly interfere with the implicit pointer to function conversion if erroneously marked on a static function, the fix entails checking the 'static' specifier on the lambda declarator prior to assigning it a calling convention of an non-static member (which pre-c++23 made sense).
ZijunZhaoCCK
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Sep 19, 2023
…tion pointer on win32 See issue llvm#62594 This code does not work on win32: auto lstatic = []() static { return 0; }; int (*f2)(void) = lstatic; Since a calling convention such as CC_X86ThisCall can rightly interfere with the implicit pointer to function conversion if erroneously marked on a static function, the fix entails checking the 'static' specifier on the lambda declarator prior to assigning it a calling convention of an non-static member (which pre-c++23 made sense).
zahiraam
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Oct 24, 2023
…tion pointer on win32 See issue llvm#62594 This code does not work on win32: auto lstatic = []() static { return 0; }; int (*f2)(void) = lstatic; Since a calling convention such as CC_X86ThisCall can rightly interfere with the implicit pointer to function conversion if erroneously marked on a static function, the fix entails checking the 'static' specifier on the lambda declarator prior to assigning it a calling convention of an non-static member (which pre-c++23 made sense).
zahiraam
pushed a commit
to tahonermann/llvm-project
that referenced
this issue
Oct 24, 2023
…tion pointer on win32 See issue llvm#62594 This code does not work on win32: auto lstatic = []() static { return 0; }; int (*f2)(void) = lstatic; Since a calling convention such as CC_X86ThisCall can rightly interfere with the implicit pointer to function conversion if erroneously marked on a static function, the fix entails checking the 'static' specifier on the lambda declarator prior to assigning it a calling convention of an non-static member (which pre-c++23 made sense).
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Fixed in Clang 18 |
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This code does not work with clang compiled with msvc.
I am working on a quick patch to fix it (the wrong calling convention
CC_X86ThisCallis getting assigned in spite of thestatic).The text was updated successfully, but these errors were encountered: