concat2
char concat2[] = "one" "two";
? concat2(tmp, tmp[len - 1] == '/' ? "" : "/")
? concat2(libexec_dir, "/lint1")
list_add_ref(&lint2.input_libraries, concat2("-l", lfn));
? concat2(libexec_dir, "/lint2")
cpp.outfile = concat2(tmpdir, "lint0.XXXXXX");
concat2(dst, src, strlen(src));
void concat2(char **, const char *, size_t);
concat2(&rec->links, name_desc, sz);