diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/compile/internal/gc/gsubr.go | 19 |
1 files changed, 15 insertions, 4 deletions
diff --git a/src/cmd/compile/internal/gc/gsubr.go b/src/cmd/compile/internal/gc/gsubr.go index 6e9f80a89d..827ccf3696 100644 --- a/src/cmd/compile/internal/gc/gsubr.go +++ b/src/cmd/compile/internal/gc/gsubr.go @@ -201,7 +201,8 @@ func (f *Func) initLSym(hasBody bool) { var aliasABI obj.ABI needABIAlias := false - if abi, ok := symabiDefs[f.lsym.Name]; ok && abi == obj.ABI0 { + defABI, hasDefABI := symabiDefs[f.lsym.Name] + if hasDefABI && defABI == obj.ABI0 { // Symbol is defined as ABI0. Create an // Internal -> ABI0 wrapper. f.lsym.SetABI(obj.ABI0) @@ -215,9 +216,19 @@ func (f *Func) initLSym(hasBody bool) { } } - if abi, ok := symabiRefs[f.lsym.Name]; ok && abi == obj.ABI0 { - // Symbol is referenced as ABI0. Create an - // ABI0 -> Internal wrapper if necessary. + isLinknameExported := nam.Sym.Linkname != "" && (hasBody || hasDefABI) + if abi, ok := symabiRefs[f.lsym.Name]; (ok && abi == obj.ABI0) || isLinknameExported { + // Either 1) this symbol is definitely + // referenced as ABI0 from this package; or 2) + // this symbol is defined in this package but + // given a linkname, indicating that it may be + // referenced from another package. Create an + // ABI0 -> Internal wrapper so it can be + // called as ABI0. In case 2, it's important + // that we know it's defined in this package + // since other packages may "pull" symbols + // using linkname and we don't want to create + // duplicate ABI wrappers. if f.lsym.ABI() != obj.ABI0 { needABIAlias, aliasABI = true, obj.ABI0 } |