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leak: report alloc size mismatch

--- a/sys/lib/acid/leak

+++ b/sys/lib/acid/leak

@@ -9,6 +9,8 @@

 	complex Pool p;

 	a = p.arenalist;

+	allocsize = 0;

+

 	print("A: ", p.arenalist\A, "\n");

 	while a != 0 do {

 		complex Arena a;

@@ -15,6 +17,13 @@

 		dumparena(a, sum);

 		a = a.down;

 	}

+	if sum then {

+		emitsum();

+	}

+

+	if allocsize != p.curalloc then {

+		print("found alloc size mismatch ", allocsize, " != ", p.curalloc, "\n");

+	}

 }

 defn

@@ -91,6 +100,7 @@

 		x = fmt(addr+sizeofBhdr, 'X');

 		if addr.magic == ALLOC_MAGIC then {

+			allocsize = allocsize+a.size;

 			// for mallocalign()

 			while *x == ALIGN_MAGIC do {

 				x = x + 4;

@@ -199,7 +209,6 @@

 {

 	print("==BLOCK BEGIN==\n");

 	dumppool(*mainmem, 1);

-	emitsum();

 	print("==BLOCK END==\n");

 }