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Open Menu /external/bsd/llvm/dist/clang/test/Preprocessor/dump-macros-undef.c 
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// RUN: %clang_cc1 -E -dD %s | FileCheck %s
// PR7818

// CHECK: # 1 "{{.+}}.c"
#define X 3
// CHECK: #define X 3
#undef X
// CHECK: #undef X