grep_malloc
f = grep_malloc(sizeof *f);
pattern[patterns] = grep_malloc(len + 15 + extra);
pattern[patterns] = grep_malloc(len + 1);
patfile = grep_malloc(sizeof(*patfile));
void *grep_malloc(size_t size);
mmf = grep_malloc(sizeof *mmf);
item = grep_malloc(sizeof *item + x->len);
fg->pattern = grep_malloc(fg->patternLen + 1);
fg->pattern = grep_malloc(fg->patternLen + 1);