$ ./compile_error
/__dffi_private/anon_cu_0.c:1:1: error: unknown type name 'this'
this is not valid C code
^
/__dffi_private/anon_cu_0.c:1:8: error: expected ';' after top level declarator
this is not valid C code
^
;
/__dffi_private/anon_cu_1.c:1:1: error: unknown type name 'still'
still invalide code
^
/__dffi_private/anon_cu_1.c:1:15: error: expected ';' after top level declarator
still invalide code
^
;
.
Description of my environment could be obtained here
Here is what I got: