diff options
| author | David Crawshaw <crawshaw@golang.org> | 2016-09-24 08:39:31 +1000 |
|---|---|---|
| committer | David Crawshaw <crawshaw@golang.org> | 2016-11-03 14:07:34 +0000 |
| commit | 8eb9fdaa0123fc98cb70f58801eb74c8a6f92817 (patch) | |
| tree | 51b8d1e7810c3aef0e05da0f62cc1803eb480ff1 /src/cmd/link/internal/ld/deadcode.go | |
| parent | 5ac3e7d6a7717bf2f722803e1852ba991af4e724 (diff) | |
| download | go-8eb9fdaa0123fc98cb70f58801eb74c8a6f92817.tar.xz | |
cmd/compile: write type symbols referenced in ptabs
The exported symbol for a plugin can be the only reference to a
type in a program. In particular, "var F func()" will have
the type *func(), which is uncommon.
Fixes #17140
Change-Id: Ide2104edbf087565f5377374057ae54e0c00c57e
Reviewed-on: https://go-review.googlesource.com/29692
Run-TryBot: David Crawshaw <crawshaw@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Diffstat (limited to 'src/cmd/link/internal/ld/deadcode.go')
| -rw-r--r-- | src/cmd/link/internal/ld/deadcode.go | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/src/cmd/link/internal/ld/deadcode.go b/src/cmd/link/internal/ld/deadcode.go index ac64813228..335d9849c9 100644 --- a/src/cmd/link/internal/ld/deadcode.go +++ b/src/cmd/link/internal/ld/deadcode.go @@ -290,6 +290,11 @@ func (d *deadcodepass) flood() { } if strings.HasPrefix(s.Name, "type.") && s.Name[5] != '.' { + if len(s.P) == 0 { + // Probably a bug. The undefined symbol check + // later will give a better error than deadcode. + continue + } if decodetypeKind(s)&kindMask == kindInterface { for _, sig := range decodeIfaceMethods(d.ctxt.Arch, s) { if d.ctxt.Debugvlog > 1 { |