diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/compile/internal/noder/stencil.go | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/src/cmd/compile/internal/noder/stencil.go b/src/cmd/compile/internal/noder/stencil.go index 796a740528..1534a1fa49 100644 --- a/src/cmd/compile/internal/noder/stencil.go +++ b/src/cmd/compile/internal/noder/stencil.go @@ -1214,6 +1214,9 @@ func (subst *subster) node(n ir.Node) ir.Node { if m.Tag != nil && m.Tag.Op() == ir.OTYPESW { break // Nothing to do here for type switches. } + if m.Tag != nil && !types.IsComparable(m.Tag.Type()) { + break // Nothing to do here for un-comparable types. + } if m.Tag != nil && !m.Tag.Type().IsEmptyInterface() && m.Tag.Type().HasShape() { // To implement a switch on a value that is or has a type parameter, we first convert // that thing we're switching on to an interface{}. |