llvm-project

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// RUN: %clang_cc1 -verify %s
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// RUN: %clang_cc1 -verify %s -std=c++98
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// RUN: %clang_cc1 -verify %s -std=c++11
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// RUN: %clang_cc1 -verify %s -std=c++1z
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// PR25946
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// We had an off-by-one error in an assertion when annotating A<int> below.  Our
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// error recovery checks if A<int> is a constructor declarator, and opens a
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// TentativeParsingAction. Then we attempt to annotate the token at the exact
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// position that we want to possibly backtrack to, and this used to crash.
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template <typename T> class A {};
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// expected-error@+1 {{expected '{' after base class list}}
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template <typename T> class B : T // not ',' or '{'
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#if __cplusplus < 201103L
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// expected-error@+8 {{expected ';' after top level declarator}}
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#endif
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#if __cplusplus <= 201402L
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// expected-error@+5 {{a type specifier is required for all declarations}}
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#else
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// expected-error@+3 {{expected unqualified-id}}
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#endif
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// expected-error@+1 {{expected ';' after class}}
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A<int> {
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};
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