Imported Upstream version 2011.01.12upstream/2011.01.12

1 files changed, 2 insertions, 13 deletions

diff --git a/src/pkg/exp/eval/func.go b/src/pkg/exp/eval/func.go
index e672d0783..cb1b579e4 100644
--- a/src/pkg/exp/eval/func.go
+++ b/src/pkg/exp/eval/func.go
@@ -43,16 +43,7 @@ type codeBuf struct {
 func newCodeBuf() *codeBuf { return &codeBuf{make(code, 0, 16)} }
 
 func (b *codeBuf) push(instr func(*Thread)) {
-	n := len(b.instrs)
-	if n >= cap(b.instrs) {
-		a := make(code, n, n*2)
-		for i := range b.instrs {
-			a[i] = b.instrs[i]
-		}
-		b.instrs = a
-	}
-	b.instrs = b.instrs[0 : n+1]
-	b.instrs[n] = instr
+	b.instrs = append(b.instrs, instr)
 }
 
 func (b *codeBuf) nextPC() uint { return uint(len(b.instrs)) }
@@ -60,9 +51,7 @@ func (b *codeBuf) nextPC() uint { return uint(len(b.instrs)) }
 func (b *codeBuf) get() code {
 	// Freeze this buffer into an array of exactly the right size
 	a := make(code, len(b.instrs))
-	for i := range b.instrs {
-		a[i] = b.instrs[i]
-	}
+	copy(a, b.instrs)
 	return code(a)
 }