778dbcbbb5
This commit adds the /Zc:\_\_STDC\_\_ argument from MSVC, which defines \_\_STDC_\_. This means, alongside stronger feature parity with MSVC, that things that rely on \_\_STDC\_\_, such as autoconf, can work. Link to MSVC documentation of this flag: https://learn.microsoft.com/en-us/cpp/build/reference/zc-stdc?view=msvc-170
10 lines
665 B
C++
10 lines
665 B
C++
// RUN: %clang_cl /TC /dev/null /E -Xclang -dM 2> /dev/null | FileCheck -match-full-lines %s --check-prefix=NOSTDC
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// RUN: %clang_cl /TC /dev/null /E -Xclang -dM /Zc:__STDC__ 2> /dev/null | FileCheck -match-full-lines %s --check-prefix=YESSTDC
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// __STDC__ should never be defined in C++ mode with fms-compatibility.
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// RUN: %clang_cl /dev/null /E -Xclang -dM 2>&1 | FileCheck %s --check-prefix=NOSTDC
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// RUN: %clang_cl /dev/null /E -Xclang -dM /Zc:__STDC__ 2>&1 | FileCheck %s --check-prefix=ZCSTDCIGNORED
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// YESSTDC: #define __STDC__ 1
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// NOSTDC-NOT: #define __STDC__ 1
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// ZCSTDCIGNORED-NOT: #define __STDC__ 1
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// ZCSTDCIGNORED: argument unused during compilation
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