shithub: trueawk

Info  •  Files  •  Log  •  Branches

Fix memory corruption manifested on 32 bit binaries (#58)

* Don't update gototab entries for HAT (corrupts memory)

--- a/b.c

+++ b/b.c

@@ -1273,7 +1273,8 @@

 			if (tmpset[j] != p[j])

 				goto different;

 		/* setvec is state i */

-		f->gototab[s][c] = i;

+		if (c != HAT)

+			f->gototab[s][c] = i;

 		return i;

 	  different:;

 	}

@@ -1287,7 +1288,8 @@

 	p = intalloc(setcnt + 1, __func__);

 	f->posns[f->curstat] = p;

-	f->gototab[s][c] = f->curstat;

+	if (c != HAT)

+		f->gototab[s][c] = f->curstat;

 	for (i = 0; i <= setcnt; i++)

 		p[i] = tmpset[i];

 	if (setvec[f->accept])

-- 

⑨