diff options
| -rw-r--r-- | src/cmd/8g/ggen.c | 2 | ||||
| -rw-r--r-- | test/fixedbugs/issue5820.go | 18 |
2 files changed, 19 insertions, 1 deletions
diff --git a/src/cmd/8g/ggen.c b/src/cmd/8g/ggen.c index 70148106c4..b0154bb80c 100644 --- a/src/cmd/8g/ggen.c +++ b/src/cmd/8g/ggen.c @@ -78,9 +78,9 @@ clearfat(Node *nl) c = w % 4; // bytes q = w / 4; // quads - gconreg(AMOVL, 0, D_AX); nodreg(&n1, types[tptr], D_DI); agen(nl, &n1); + gconreg(AMOVL, 0, D_AX); if(q >= 4) { gconreg(AMOVL, q, D_CX); diff --git a/test/fixedbugs/issue5820.go b/test/fixedbugs/issue5820.go new file mode 100644 index 0000000000..94de06d57d --- /dev/null +++ b/test/fixedbugs/issue5820.go @@ -0,0 +1,18 @@ +// run + +// Copyright 2013 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +// issue 5820: register clobber when clearfat and 64 bit arithmetic is interleaved. + +package main + +func main() { + array := make([][]int, 2) + index := uint64(1) + array[index] = nil + if array[1] != nil { + panic("array[1] != nil") + } +} |