ac73cafac0
See PR47804: TreeTransform uses TransformedLocalDecls as a map of declarations that have been transformed already. When doing a "TransformDecl", which happens in the cases of updating a DeclRefExpr's target, the default implementation simply returns the already transformed declaration. However, this was not including ParmVarDecls. SO, any use of TreeTransform that didn't re-implement TransformDecl would NOT properly update the target of a DeclRefExpr, resulting in odd behavior. In the case of Typo-recovery, the result was that a lambda that used its own parameter would cause an error, since it thought that the ParmVarDecl referenced was a different lambda. Additionally, this caused a problem in the AST (a declrefexpr into another scope) such that a future instantiation would cause an assertion. This patch ensures that the ParmVarDecl transforming process records into TransformedLocalDecls so that the DeclRefExpr is ALSO updated.
19 lines
568 B
C++
19 lines
568 B
C++
// RUN: %clang_cc1 -std=c++11 -fsyntax-only %s -verify
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template <class InputIt, class Pred>
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bool all_of(InputIt first, Pred p);
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template <typename T> void load_test() {
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// Ensure that this doesn't crash during CorrectDelayedTyposInExpr,
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// or any other use of TreeTransform that doesn't implement TransformDecl
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// separately. Also, this should only error on 'output', not that 'x' is not
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// captured.
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// expected-error@+1 {{use of undeclared identifier 'output'}}
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all_of(output, [](T x) { return x; });
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}
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int main() {
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load_test<int>();
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return 0;
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}
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