From 1b89dada1ae7e2378a06f0ffeebb31f925fb08e9 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <iant@golang.org>
Date: Fri, 5 Jan 2018 16:52:53 -0800
Subject: [PATCH] cmd/cgo: support niladic macros for gccgo

https://golang.org/cl/43970 changed writeOutputFunc to support niladic
function-like macros; apply the corresponding change to
writeGccgoOutputFunc.

Updates #10715
Updates #18720

Change-Id: I5decb1d37ec71507466ade2eeda4b89c8785eaef
Reviewed-on: https://go-review.googlesource.com/86475
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Hiroshi Ioka <hirochachacha@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Reviewed-by: Austin Clements <austin@google.com>
---
 src/cmd/cgo/out.go | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

diff --git a/src/cmd/cgo/out.go b/src/cmd/cgo/out.go
index 44a00d8154f..070429f442d 100644
--- a/src/cmd/cgo/out.go
+++ b/src/cmd/cgo/out.go
@@ -695,14 +695,18 @@ func (p *Package) writeGccgoOutputFunc(fgcc *os.File, n *Name) {
 			fmt.Fprintf(fgcc, "(void*)")
 		}
 	}
-	fmt.Fprintf(fgcc, "%s(", n.C)
-	for i := range n.FuncType.Params {
-		if i > 0 {
-			fmt.Fprintf(fgcc, ", ")
+	if n.Kind == "macro" {
+		fmt.Fprintf(fgcc, "%s;\n", n.C)
+	} else {
+		fmt.Fprintf(fgcc, "%s(", n.C)
+		for i := range n.FuncType.Params {
+			if i > 0 {
+				fmt.Fprintf(fgcc, ", ")
+			}
+			fmt.Fprintf(fgcc, "p%d", i)
 		}
-		fmt.Fprintf(fgcc, "p%d", i)
+		fmt.Fprintf(fgcc, ");\n")
 	}
-	fmt.Fprintf(fgcc, ");\n")
 	fmt.Fprintf(fgcc, "\t_cgo_tsan_release();\n")
 	if t := n.FuncType.Result; t != nil {
 		fmt.Fprintf(fgcc, "\treturn ")