GCPRO2           3191 test/manual/etags/c-src/emacs/src/lisp.h #define GCPRO2(varname1, varname2) ((void) gcpro2, (void) gcpro1)
GCPRO2           3212 test/manual/etags/c-src/emacs/src/lisp.h #define GCPRO2(a, b)							\
GCPRO2           3269 test/manual/etags/c-src/emacs/src/lisp.h #define GCPRO2(a, b)							\