reallochook      1978 src/gmalloc.c    grealloc_hook = reallochook;
reallochook      2035 src/gmalloc.c        grealloc_hook = reallochook;
reallochook      1965 test/manual/etags/c-src/emacs/src/gmalloc.c   __realloc_hook = reallochook;
reallochook      2027 test/manual/etags/c-src/emacs/src/gmalloc.c       __realloc_hook = reallochook;