[clang][Sema] Resolving Inconsistent Arguments Panic in Variadic Template Variables #70280
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llvmbot
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clang
knightXun
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✅ With the latest revision this PR passed the C/C++ code formatter. |
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i will add test case for it |
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@knightXun code looks reasonable, ping me when you have tests and a release note :) |
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…iadic Template Variables When template variables are variadic, sema may panic, potentially leading to a situation where the number of function variables exceeds the number of template variables. The sema compares the template signature and function signature parameters one by one, which can trigger an assertion error. This PR, when encountering variadic templates, avoids comparing the template signature and function signature parameters one by one. issue: llvm#70191
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cc @cor3ntin |
cor3ntin
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Apr 4, 2024
clang/test/SemaCXX/GH70280.cpp
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| template <typename... c> void d(c...) = d<b, a>(0, ""); // expected-error {{no matching function for call to 'd'}} | ||
| // expected-error@-1 {{illegal initializer (only variables can be initialized)}} | ||
| // expected-note@-2 {{candidate function template not viable: no known conversion from 'const char[1]' to 'a' (aka 'int') for 2nd argument}} | ||
| } |
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@shafik Yes. It needs to be rebased though |
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When template variables are variadic, sema may panic, potentially leading to a situation where the number of function variables exceeds the number of template variables.The sema compares the template signature and function signature parameters one by one, which can trigger an assertion error. This PR, when encountering variadic templates,
avoids comparing the template signature and function signature parameters one by one.
#70191