src/runtime: use memzero for leaking collector

dgryski · aykevl · commit 7e647a5e8112 · 2022-03-04T01:35:22.000+01:00
diff --git a/src/runtime/gc_leaking.go b/src/runtime/gc_leaking.go
@@ -29,11 +29,9 @@ func alloc(size uintptr, layout unsafe.Pointer) unsafe.Pointer {
 		// Failed to make the heap bigger, so we must really be out of memory.
 		runtimePanic("out of memory")
 	}
-	for i := uintptr(0); i < uintptr(size); i += 4 {
-		ptr := (*uint32)(unsafe.Pointer(addr + i))
-		*ptr = 0
-	}
-	return unsafe.Pointer(addr)
+	pointer := unsafe.Pointer(addr)
+	memzero(pointer, size)
+	return pointer
 }
 
 func realloc(ptr unsafe.Pointer, size uintptr) unsafe.Pointer {

Original file line number	Diff line number	Diff line change
`@@ -29,11 +29,9 @@ func alloc(size uintptr, layout unsafe.Pointer) unsafe.Pointer {`
`29`	`29`	`// Failed to make the heap bigger, so we must really be out of memory.`
`30`	`30`	`runtimePanic("out of memory")`
`31`	`31`	`}`
`32`		`- for i := uintptr(0); i < uintptr(size); i += 4 {`
`33`		`- ptr := (*uint32)(unsafe.Pointer(addr + i))`
`34`		`- *ptr = 0`
`35`		`- }`
`36`		`- return unsafe.Pointer(addr)`
	`32`	`+ pointer := unsafe.Pointer(addr)`
	`33`	`+ memzero(pointer, size)`
	`34`	`+ return pointer`
`37`	`35`	`}`
`38`	`36`
`39`	`37`	`func realloc(ptr unsafe.Pointer, size uintptr) unsafe.Pointer {`