34 lines
1.6 KiB
C++
34 lines
1.6 KiB
C++
// RUN: not %clang_cc1 -std=c++11 -fsyntax-only %s -fconstexpr-backtrace-limit 0 -fconstexpr-depth 4 -fno-caret-diagnostics 2>&1 | FileCheck %s -check-prefix=TEST1
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// TEST1: constant expression
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// TEST1-NEXT: exceeded maximum depth of 4
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// TEST1-NEXT: in call to 'recurse(2)'
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// TEST1-NEXT: in call to 'recurse(3)'
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// TEST1-NEXT: in call to 'recurse(4)'
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// TEST1-NEXT: in call to 'recurse(5)'
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// RUN: not %clang_cc1 -std=c++11 -fsyntax-only %s -fconstexpr-backtrace-limit 2 -fconstexpr-depth 4 -fno-caret-diagnostics 2>&1 | FileCheck %s -check-prefix=TEST2
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// TEST2: constant expression
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// TEST2-NEXT: exceeded maximum depth of 4
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// TEST2-NEXT: in call to 'recurse(2)'
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// TEST2-NEXT: skipping 2 calls
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// TEST2-NEXT: in call to 'recurse(5)'
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// RUN: not %clang_cc1 -std=c++11 -fsyntax-only %s -fconstexpr-backtrace-limit 2 -fconstexpr-depth 8 -fno-caret-diagnostics 2>&1 | FileCheck %s -check-prefix=TEST3
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// TEST3: constant expression
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// TEST3-NEXT: reinterpret_cast
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// TEST3-NEXT: in call to 'recurse(0)'
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// TEST3-NEXT: skipping 4 calls
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// TEST3-NEXT: in call to 'recurse(5)'
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// RUN: not %clang_cc1 -std=c++11 -fsyntax-only %s -fconstexpr-backtrace-limit 8 -fconstexpr-depth 8 -fno-caret-diagnostics 2>&1 | FileCheck %s -check-prefix=TEST4
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// TEST4: constant expression
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// TEST4-NEXT: reinterpret_cast
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// TEST4-NEXT: in call to 'recurse(0)'
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// TEST4-NEXT: in call to 'recurse(1)'
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// TEST4-NEXT: in call to 'recurse(2)'
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// TEST4-NEXT: in call to 'recurse(3)'
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// TEST4-NEXT: in call to 'recurse(4)'
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// TEST4-NEXT: in call to 'recurse(5)'
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constexpr int recurse(int n) { return n ? recurse(n-1) : *(int*)n; }
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static_assert(recurse(5), "");
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