0fb84bc7fd
expr.prim.lambda.capture p5 says:
If an identifier in a capture appears as the declarator-id of a parameter of
the lambda-declarator's parameter-declaration-clause or as the name of a
template parameter of the lambda-expression's template-parameter-list,
the program is ill-formed.
and also has the following example:
```
auto h = [y = 0]<typename y>(y) { return 0; };
```
which now results in
```
error: declaration of 'y' shadows template parameter
auto l1 = [y = 0]<typename y>(y) { return 0; };
^
note: template parameter is declared here
auto l1 = [y = 0]<typename y>(y) { return 0; };
^
```
Fixes https://github.com/llvm/llvm-project/issues/61105
Reviewed By: shafik, cor3ntin
Differential Revision: https://reviews.llvm.org/D148712
11 lines
519 B
C++
11 lines
519 B
C++
// RUN: %clang_cc1 -std=c++20 -verify %s
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void f() {
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int x = 0;
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auto g = [x](int x) { return 0; }; // expected-error {{a lambda parameter cannot shadow an explicitly captured entity}} \
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// expected-note {{variable 'x' is explicitly captured here}}
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auto h = [y = 0]<typename y>(y) { return 0; }; // expected-error {{declaration of 'y' shadows template parameter}} \
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// expected-note {{template parameter is declared here}}
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}
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