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1! Ensure the end-of-line character and anything that follows after in a macro definition (-D) is ignored.2 3!--------------------------4! FLANG DRIVER (flang)5!--------------------------6! RUN: printf -- "-DX=A\\\\\nTHIS_SHOULD_NOT_EXIST_IN_THE_OUTPUT\n" | xargs %flang -E -P %s 2>&1 | FileCheck --strict-whitespace --match-full-lines %s7 8!-----------------------------------------9! FRONTEND FLANG DRIVER (flang_fc1)10!-----------------------------------------11! RUN: printf -- "-DX=A\\\\\nTHIS_SHOULD_NOT_EXIST_IN_THE_OUTPUT\n" | xargs %flang_fc1 -E -P %s 2>&1 | FileCheck --strict-whitespace --match-full-lines %s12 13! CHECK: START A END14! CHECK-NOT:THIS_SHOULD_NOT_EXIST_IN_THE_OUTPUT15! CHECK-NOT:this_should_not_exist_in_the_output16 17 START X END18