I can't do math; fix bug introduced in 5a9761

549c62cc · Austin Clements · 215a9ce2 · 549c62cc
--- a/exec.c
+++ b/exec.c
@@ -61,7 +61,7 @@ exec(char *path, char **argv)
  for(argc = 0; argv[argc]; argc++) {
    if(argc >= MAXARG)
      goto bad;
-    sp = (sp - strlen(argv[argc]) + 1) & ~3;
+    sp = (sp - (strlen(argv[argc]) + 1)) & ~3;
    if(copyout(pgdir, sp, argv[argc], strlen(argv[argc]) + 1) < 0)
      goto bad;
    ustack[3+argc] = sp;