(root)/
gcc-13.2.0/
gcc/
testsuite/
gcc.dg/
cpp/
warn-unused-macros.c
       1  // { dg-do preprocess }
       2  // { dg-options "-std=gnu99 -fdiagnostics-show-option -Wunused-macros" }
       3  
       4  #define X X  // { dg-warning "-:macro \"X\" is not used .-Wunused-macros." }