diff options
Diffstat (limited to 'src/cmd/compile/internal/walk/switch.go')
| -rw-r--r-- | src/cmd/compile/internal/walk/switch.go | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/cmd/compile/internal/walk/switch.go b/src/cmd/compile/internal/walk/switch.go index 59446ef3db..162de018f6 100644 --- a/src/cmd/compile/internal/walk/switch.go +++ b/src/cmd/compile/internal/walk/switch.go @@ -19,9 +19,10 @@ import ( // walkSwitch walks a switch statement. func walkSwitch(sw *ir.SwitchStmt) { // Guard against double walk, see #25776. - if len(sw.Cases) == 0 && len(sw.Compiled) > 0 { + if sw.Walked() { return // Was fatal, but eliminating every possible source of double-walking is hard } + sw.SetWalked(true) if sw.Tag != nil && sw.Tag.Op() == ir.OTYPESW { walkSwitchType(sw) @@ -48,8 +49,8 @@ func walkSwitchExpr(sw *ir.SwitchStmt) { // Given "switch string(byteslice)", // with all cases being side-effect free, // use a zero-cost alias of the byte slice. - // Do this before calling walkexpr on cond, - // because walkexpr will lower the string + // Do this before calling walkExpr on cond, + // because walkExpr will lower the string // conversion into a runtime call. // See issue 24937 for more discussion. if cond.Op() == ir.OBYTES2STR && allCaseExprsAreSideEffectFree(sw) { |