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Diffstat (limited to '')
-rw-r--r-- | test/fixedbugs/issue44739.go | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/test/fixedbugs/issue44739.go b/test/fixedbugs/issue44739.go new file mode 100644 index 0000000..3441a90 --- /dev/null +++ b/test/fixedbugs/issue44739.go @@ -0,0 +1,61 @@ +// compile + +// Copyright 2021 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 44739: cmd/compile: incorrect offset in MOVD +// load/store on ppc64/ppc64le causes assembler error. + +// Test other 8 byte loads and stores where the +// compile time offset is not aligned to 8, as +// well as cases where the offset is not known +// until link time (e.g. gostrings). + +package main + +import ( + "fmt" +) + +type T struct { + x [4]byte + y [8]byte +} + +var st T + +const ( + gostring1 = "abc" + gostring2 = "defghijk" + gostring3 = "lmnopqrs" +) + +func f(a T, _ byte, b T) bool { + // initialization of a,b + // tests unaligned store + return a.y == b.y +} + +func g(a T) { + // test load of unaligned + // 8 byte gostring, store + // to unaligned static + copy(a.y[:], gostring2) +} + +func main() { + var t1, t2 T + + // test copy to automatic storage, + // load of unaligned gostring. + copy(st.y[:], gostring2) + copy(t1.y[:], st.y[:]) + copy(t2.y[:], gostring3) + // test initialization of params + if !f(t1, 'a', t2) { + // gostring1 added so it has a use + fmt.Printf("FAIL: %s\n", gostring1) + } +} + |