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comparison clang/test/Parser/backtrack-off-by-one.cpp @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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children c4bab56944e8
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147:c2174574ed3a 150:1d019706d866
1 // RUN: %clang_cc1 -verify %s
2 // RUN: %clang_cc1 -verify %s -std=c++98
3 // RUN: %clang_cc1 -verify %s -std=c++11
4 // RUN: %clang_cc1 -verify %s -std=c++1z
5
6 // PR25946
7 // We had an off-by-one error in an assertion when annotating A<int> below. Our
8 // error recovery checks if A<int> is a constructor declarator, and opens a
9 // TentativeParsingAction. Then we attempt to annotate the token at the exact
10 // position that we want to possibly backtrack to, and this used to crash.
11
12 template <typename T> class A {};
13
14 // expected-error@+1 {{expected '{' after base class list}}
15 template <typename T> class B : T // not ',' or '{'
16 #if __cplusplus < 201103L
17 // expected-error@+8 {{expected ';' after top level declarator}}
18 #endif
19 #if __cplusplus <= 201402L
20 // expected-error@+5 {{C++ requires a type specifier for all declarations}}
21 #else
22 // expected-error@+3 {{expected unqualified-id}}
23 #endif
24 // expected-error@+1 {{expected ';' after class}}
25 A<int> {
26 };