================
@@ -5,3 +5,10 @@
! CHECK-SYNTAX-ONLY: "{{[^"]*}}/Inputs/one.f90"
! CHECK-SYNTAX-ONLY-LABEL: "{{[^"]*}}clang{{[^"/]*}}" "-cc1"
! CHECK-SYNTAX-ONLY: "{{[^"]*}}/Inputs/other.c"
+
+! RUN: not %clang --driver-mode=flang -### -Xflang -std=f2018
%S/Inputs/one.f90 -Xclang -std=c17 %S/Inputs/other.c 2>&1 | FileCheck
--check-prefixes=MIXED-OPT %s
+! MIXED-OPT: clang: error: unknown argument '-Xclang'
+! MIXED-OPT-NOT: "{{[^"]*}}flang{{[^"/]*}}" "-fc1"
+! MIXED-OPT-NOT: "-std=f2018"
+! MIXED-OPT-NOT: "{{[^"]*}}clang{{[^"/]*}}" "-cc1"
+! MIXED-OPT-NOT: "-std=c17"
----------------
tarunprabhu wrote:
Could you clarify the purpose of these checks? I don't understand why we need
to check for the absence of `fc1` and `cc1` lines.
https://github.com/llvm/llvm-project/pull/207658
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