// WARN: note: The last /TC or /TP option takes precedence over earlier instances
// WARN-NOT: note
-// RUN: env LIB=%S/Inputs/cl-libs %clang_cl /c /TP cl-test.lib -### 2>&1 | FileCheck -check-prefix=TPlib %s
+// MSYS2_ARG_CONV_EXCL tells MSYS2 to skip conversion of the specified argument.
+// RUN: env LIB=%S/Inputs/cl-libs MSYS2_ARG_CONV_EXCL="/TP;/c" %clang_cl /c /TP cl-test.lib -### 2>&1 | FileCheck -check-prefix=TPlib %s
// TPlib: warning: cl-test.lib: 'linker' input unused
// TPlib: warning: argument unused during compilation: '/TP'
// TPlib-NOT: cl-test.lib
-// RUN: env LIB=%S/Inputs/cl-libs %clang_cl /c /TC cl-test.lib -### 2>&1 | FileCheck -check-prefix=TClib %s
+// RUN: env LIB=%S/Inputs/cl-libs MSYS2_ARG_CONV_EXCL="/TC;/c" %clang_cl /c /TC cl-test.lib -### 2>&1 | FileCheck -check-prefix=TClib %s
// TClib: warning: cl-test.lib: 'linker' input unused
// TClib: warning: argument unused during compilation: '/TC'
// TClib-NOT: cl-test.lib