| 1 | // 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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| 2 | // TEST1: constant expression |
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| 3 | // TEST1-NEXT: exceeded maximum depth of 4 |
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| 4 | // TEST1-NEXT: in call to 'recurse(2)' |
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| 5 | // TEST1-NEXT: in call to 'recurse(3)' |
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| 6 | // TEST1-NEXT: in call to 'recurse(4)' |
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| 7 | // TEST1-NEXT: in call to 'recurse(5)' |
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| 8 | |
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| 9 | // 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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| 10 | // TEST2: constant expression |
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| 11 | // TEST2-NEXT: exceeded maximum depth of 4 |
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| 12 | // TEST2-NEXT: in call to 'recurse(2)' |
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| 13 | // TEST2-NEXT: skipping 2 calls |
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| 14 | // TEST2-NEXT: in call to 'recurse(5)' |
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| 15 | |
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| 16 | // 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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| 17 | // TEST3: constant expression |
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| 18 | // TEST3-NEXT: reinterpret_cast |
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| 19 | // TEST3-NEXT: in call to 'recurse(0)' |
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| 20 | // TEST3-NEXT: skipping 4 calls |
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| 21 | // TEST3-NEXT: in call to 'recurse(5)' |
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| 22 | |
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| 23 | // 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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| 24 | // TEST4: constant expression |
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| 25 | // TEST4-NEXT: reinterpret_cast |
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| 26 | // TEST4-NEXT: in call to 'recurse(0)' |
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| 27 | // TEST4-NEXT: in call to 'recurse(1)' |
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| 28 | // TEST4-NEXT: in call to 'recurse(2)' |
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| 29 | // TEST4-NEXT: in call to 'recurse(3)' |
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| 30 | // TEST4-NEXT: in call to 'recurse(4)' |
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| 31 | // TEST4-NEXT: in call to 'recurse(5)' |
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| 32 | |
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| 33 | constexpr int recurse(int n) { return n ? recurse(n-1) : *(int*)n; } |
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| 34 | static_assert(recurse(5), ""); |
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| 35 | |
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