runtime: make Go and C mallocgc signatures match
Previously, the flags argument to mallocgc was an int in Go,
but a uint32 in C. Change the Go type to use uint32 so these
agree. The largest flag value is 2 (and of course no flag
values are negative), so this won't change anything on little
endian architectures, but it matters on big endian.
LGTM=rsc
R=khr, rsc
CC=golang-codereviews
https://golang.org/cl/169920043
diff --git a/src/runtime/malloc.go b/src/runtime/malloc.go
index 9b4264f..8cf1c3d 100644
--- a/src/runtime/malloc.go
+++ b/src/runtime/malloc.go
@@ -43,7 +43,7 @@
// Allocate an object of size bytes.
// Small objects are allocated from the per-P cache's free lists.
// Large objects (> 32 kB) are allocated straight from the heap.
-func mallocgc(size uintptr, typ *_type, flags int) unsafe.Pointer {
+func mallocgc(size uintptr, typ *_type, flags uint32) unsafe.Pointer {
if size == 0 {
return unsafe.Pointer(&zerobase)
}
@@ -346,7 +346,7 @@
// implementation of new builtin
func newobject(typ *_type) unsafe.Pointer {
- flags := 0
+ flags := uint32(0)
if typ.kind&kindNoPointers != 0 {
flags |= flagNoScan
}
@@ -355,7 +355,7 @@
// implementation of make builtin for slices
func newarray(typ *_type, n uintptr) unsafe.Pointer {
- flags := 0
+ flags := uint32(0)
if typ.kind&kindNoPointers != 0 {
flags |= flagNoScan
}
