From: Ian Lance Taylor <ian@gcc.gnu.org>
Date: Thu, 17 Apr 2014 23:39:23 +0000 (+0000)
Subject: gofrontend: deduplicate C syscall function declarations
X-Git-Tag: releases/gcc-5.1.0~8042
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5584c49a11b2a2427b4ca0323b8ca213de095573;p=thirdparty%2Fgcc.git

gofrontend: deduplicate C syscall function declarations

A gccgo language extension allows a function to be declared multiple
times. Avoid the use of this extension by dedeplicating declarations
in mksyscall.awk.

From-SVN: r209508
---

diff --git a/libgo/go/syscall/mksyscall.awk b/libgo/go/syscall/mksyscall.awk
index daf6554a6cd5..8d009222a182 100644
--- a/libgo/go/syscall/mksyscall.awk
+++ b/libgo/go/syscall/mksyscall.awk
@@ -96,8 +96,11 @@ BEGIN {
     cfnresult = line
 
     printf("// Automatically generated wrapper for %s/%s\n", gofnname, cfnname)
-    printf("//extern %s\n", cfnname)
-    printf("func c_%s(%s) %s\n", cfnname, cfnparams, cfnresult)
+    if (!(cfnname in cfns)) {
+        cfns[cfnname] = 1
+        printf("//extern %s\n", cfnname)
+        printf("func c_%s(%s) %s\n", cfnname, cfnparams, cfnresult)
+    }
     printf("func %s(%s) %s%s%s%s{\n",
 	   gofnname, gofnparams, gofnresults == "" ? "" : "(", gofnresults,
 	   gofnresults == "" ? "" : ")", gofnresults == "" ? "" : " ")