Temporary header file '/tmp/1f4Z0tAOi1/dump1.h' with the following content will be compiled to create GCC translation unit dump: // add defines #define __STDC_VERSION__ 201710L #define _GXX_NULLPTR_T #define CLUTTER_ENABLE_COMPOSITOR_API 1 #define _REGEX_NELTS(n) #define _Atomic #define PACKED #define getaddrinfo_a(a,b,c,d) // add includes #include "/usr/share/cargo/registry/cexpr-0.6.0/tests/input/chars.h" #include "/usr/share/cargo/registry/cexpr-0.6.0/tests/input/fail.h" #include "/usr/share/cargo/registry/cexpr-0.6.0/tests/input/floats.h" #include "/usr/share/cargo/registry/cexpr-0.6.0/tests/input/int_signed.h" #include "/usr/share/cargo/registry/cexpr-0.6.0/tests/input/int_unsigned.h" #include "/usr/share/cargo/registry/cexpr-0.6.0/tests/input/strings.h" #include "/usr/share/cargo/registry/cexpr-0.6.0/tests/input/test_llvm_bug_9069.h" The GCC parameters: gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/1f4Z0tAOi1/dump1.h"