[dev.link] cmd/link: fix funcfunctab crash with darwin + plugin

Fix a bug in findfunctab when building plugin on Darwin (this is
a regression introduced by CL 227842).

Change-Id: Ic610168e45a750c0a2f2b8611d5d9154e6c2622f
Reviewed-on: https://go-review.googlesource.com/c/go/+/228137
Run-TryBot: Than McIntosh <thanm@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Jeremy Faller <jeremy@golang.org>

diff --git a/src/cmd/link/internal/ld/pcln.go b/src/cmd/link/internal/ld/pcln.go
index 9e2a4b2ffa169300a9f2c2143ed92e9f68893884..b275d208566dabc69611d6784bf244018185dd20 100644 (file)
--- a/src/cmd/link/internal/ld/pcln.go
+++ b/src/cmd/link/internal/ld/pcln.go
@@ -601,7 +601,7 @@ func (ctxt *Link) findfunctab(container loader.Bitmap) {
                if i < len(ctxt.Textp2) {
                        e = ctxt.Textp2[i]
                }
-               for !emitPcln(ctxt, e, container) && i < len(ctxt.Textp2) {
+               for e != 0 && !emitPcln(ctxt, e, container) && i < len(ctxt.Textp2) {
                        e = ctxt.Textp2[i]
                        i++
                }