On x86-64, sys.GoarchAmd64 == 1 for -mx32. But -mx32 has 32-bit
pointer, not 64-bit. There is
// _64bit = 1 on 64-bit systems, 0 on 32-bit systems
_64bit = 1 << (^uintptr(0) >> 63) / 2
We should check both _64bit and sys.GoarchAmd64.
PR go/87470
* go/runtime/malloc.go (arenaBaseOffset): Also check _64bit.
---
libgo/go/runtime/malloc.go | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libgo/go/runtime/malloc.go b/libgo/go/runtime/malloc.go
index ac4759ffbf1..c3445387057 100644
--- a/libgo/go/runtime/malloc.go
+++ b/libgo/go/runtime/malloc.go
@@ -306,7 +306,7 @@ const (
//
// On other platforms, the user address space is contiguous
// and starts at 0, so no offset is necessary.
- arenaBaseOffset uintptr = sys.GoarchAmd64 * (1 << 47)
+ arenaBaseOffset uintptr = _64bit * sys.GoarchAmd64 * (1 << 47)
// Max number of threads to run garbage collection.
// 2, 3, and 4 are all plausible maximums depending
--
2.17.1
