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[MinGW] Implicitly add .exe suffix if not provided GCC implicitly adds an .exe suffix if it is given an output file name, but the file name doesn't contain a suffix, and there are certain users of GCC that rely on this behaviour (and run into issues when trying to use Clang instead of GCC). And MSVC's cl.exe also does the same (but not link.exe). However, GCC only does this when actually running on windows, not when operating as a cross compiler. As GCC doesn't have this behaviour when cross compiling, we definitely shouldn't introduce the behaviour in such cases (as it would break at least as many cases as this fixes). Differential Revision: https://reviews.llvm.org/D71400
2019-12-12 17:08:18 +08:00
// Test how an implicit .exe extension is added. If running the compiler
// on windows, an implicit extension is added if none is provided in the
// given name. (Therefore, this test is skipped when not running on windows.)
// REQUIRES: system-windows
// RUN: %clang -target i686-windows-gnu -### --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -o outputname 2>&1 | FileCheck %s --check-prefix=CHECK-OUTPUTNAME-EXE
// RUN: %clang -target i686-windows-gnu -### --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -o outputname.exe 2>&1 | FileCheck %s --check-prefix=CHECK-OUTPUTNAME-EXE
// RUN: %clang -target i686-windows-gnu -### --sysroot=%S/Inputs/mingw_clang_tree/mingw32 %s -o outputname.q 2>&1 | FileCheck %s --check-prefix=CHECK-OUTPUTNAME-Q
// CHECK-OUTPUTNAME-EXE: "-o" "outputname.exe"
// CHECK-OUTPUTNAME-Q: "-o" "outputname.q"