From 1b2d5b4c9389aecc56a4547a9770d0c73925b248 Mon Sep 17 00:00:00 2001
From: Ian Lance Taylor <iant@golang.org>
Date: Thu, 6 Jan 2011 16:37:05 -0800
Subject: [PATCH] ld: Permit an ELF symbol to be exported in the dynamic symbol
 table.

This permits exporting crosscall2 from the runtime/cgo
package.

R=rsc
CC=golang-dev
https://golang.org/cl/3885041
---
 src/cmd/ld/ldelf.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/cmd/ld/ldelf.c b/src/cmd/ld/ldelf.c
index ccf6a412f7..44bbe68ee0 100644
--- a/src/cmd/ld/ldelf.c
+++ b/src/cmd/ld/ldelf.c
@@ -641,8 +641,10 @@ ldelf(Biobuf *f, char *pkg, int64 len, char *pn)
 		s->sub = sect->sym->sub;
 		sect->sym->sub = s;
 		s->type = sect->sym->type | SSUB;
-		s->dynimplib = nil;  // satisfy dynimport
-		s->dynimpname = nil;  // satisfy dynimport
+		if(!s->dynexport) {
+			s->dynimplib = nil;  // satisfy dynimport
+			s->dynimpname = nil;  // satisfy dynimport
+		}
 		s->value = sym.value;
 		s->size = sym.size;
 		s->outer = sect->sym;