Updated Questions (markdown)

Questions.md

@@ -1,26 +0,0 @@
-# Asking Questions
-
-Unlike many projects, the Go project does not use GitHub Issues for general discussion or asking questions. GitHub Issues are used for tracking bugs and [proposals](https://go.dev/s/proposal-process) only.
-
-For asking questions, see:
-
-* [The official Q&A channel for Google's Go Programming Language
-](https://stackoverflow.com/collectives/go) on Stack Overflow
-
-* [Stack Overflow](https://stackoverflow.com/questions/tagged/go) with questions tagged "go" or "golang" (complementing the Go Collective mentioned before)
-
-* [The Go Forum](https://forum.golangbridge.org/), a web-based forum
-
-* [Gophers Slack](https://gophers.slack.com), use the [invite app](https://invite.slack.golangbridge.org/) for access. The `#general` channel is a good starting point.
-
-* [Go Community on Hashnode](https://hashnode.com/n/go) with questions and posts tagged with "go"
-
-* [The golang-nuts mailing list](https://groups.google.com/d/forum/golang-nuts)
-
-* [Subreddit for Go](https://www.reddit.com/r/golang/)
-
-* **IRC** channel #go-nuts on Libera
-
-If we closed your issue as a question with a link to this wiki, we apologize. Please ask the question on one of the above forums.
-
-Please do not write your question on a wiki page.  Please use one of the above forums.

cmd-compile:-maps-doesn't-recognize-map-clearing-range-idiom.md

@@ -0,0 +1,49 @@
+What version of Go are you using (go version)?
+$ go version 1.18.2
+Does this issue reproduce with the latest release?
+yes
+
+What operating system and processor architecture are you using (go env)?
+linux & windows , amd64
+
+What did you do?
+https://go.dev/play/p/wi_i3Dx8Hpa
+
+package main
+
+func clearMap(m map[string]string) {
+	for k := range m {
+		delete(m, k)
+	}
+}
+
+//go:noinline
+func clearMap2(m map[string]string) {
+	for k := range m {
+		delete(m, k)
+	}
+}
+
+var m map[string]string
+
+func main() {
+	clearMap(m)
+	clearMap2(m)
+}
+In go1.18, the compiler will inline clearMap by default, then generates:
+
+CALL runtime.mapiterinit(SB)
+JMP 0x45b3c9
+MOVQ 0(DX), CX
+MOVQ 0x8(DX), DI
+LEAQ type.*+23744(SB), AX
+MOVQ 0x20(SP), BX
+CALL runtime.mapdelete_faststr(SB)
+LEAQ 0x28(SP), AX
+CALL runtime.mapiternext(SB)
+MOVQ 0x28(SP), DX
+TESTQ DX, DX
+JNE 0x45b3a7
+and clearMap2 will call runtime.mapclear.
+
+Is this expected behavior?