runtime: fix windows/amd64 build
Out of stack space due to new 2-word call in freedefer.
Go back to smaller function calls.
TBR=brainman
CC=golang-codereviews
https://golang.org/cl/152340043
diff --git a/src/runtime/panic.go b/src/runtime/panic.go
index c78102f..58b14b0 100644
--- a/src/runtime/panic.go
+++ b/src/runtime/panic.go
@@ -189,8 +189,7 @@
//go:nosplit
func freedefer(d *_defer) {
if d._panic != nil {
- // _panic must be cleared before d is unlinked from gp.
- gothrow("freedefer with d._panic != nil")
+ freedeferpanic()
}
sc := deferclass(uintptr(d.siz))
if sc < uintptr(len(p{}.deferpool)) {
@@ -203,6 +202,13 @@
}
}
+// Separate function so that it can split stack.
+// Windows otherwise runs out of stack space.
+func freedeferpanic() {
+ // _panic must be cleared before d is unlinked from gp.
+ gothrow("freedefer with d._panic != nil")
+}
+
// Run a deferred function if there is one.
// The compiler inserts a call to this at the end of any
// function which calls defer.
