fix: panic with nil Referrers

ldez · ldez · commit 2e93d457c7e5 · 2026-03-17T16:21:50.000+01:00
diff --git a/pkg/analyzer/defer_only.go b/pkg/analyzer/defer_only.go
@@ -292,7 +292,7 @@ func getAction(instr ssa.Instruction, targetTypes []any) action {
 			return actionReturned
 		}
 
-		if len(*instr.Addr.Referrers()) == 0 {
+		if instr.Addr.Referrers() == nil || len(*instr.Addr.Referrers()) == 0 {
 			return actionNoOp
 		}
 
@@ -378,7 +378,7 @@ func checkDeferred(pass *analysis.Pass, instrs *[]ssa.Instruction, targetTypes [
 				return
 			}
 		case *ssa.Store:
-			if len(*instr.Addr.Referrers()) == 0 {
+			if instr.Addr.Referrers() == nil || len(*instr.Addr.Referrers()) == 0 {
 				return
 			}
 

Original file line number	Diff line number	Diff line change
`@@ -292,7 +292,7 @@ func getAction(instr ssa.Instruction, targetTypes []any) action {`
`292`	`292`	`return actionReturned`
`293`	`293`	`}`
`294`	`294`
`295`		`- if len(*instr.Addr.Referrers()) == 0 {`
	`295`	`+ if instr.Addr.Referrers() == nil \|\| len(*instr.Addr.Referrers()) == 0 {`
`296`	`296`	`return actionNoOp`
`297`	`297`	`}`
`298`	`298`
`@@ -378,7 +378,7 @@ func checkDeferred(pass analysis.Pass, instrs []ssa.Instruction, targetTypes [`
`378`	`378`	`return`
`379`	`379`	`}`
`380`	`380`	`case *ssa.Store:`
`381`		`- if len(*instr.Addr.Referrers()) == 0 {`
	`381`	`+ if instr.Addr.Referrers() == nil \|\| len(*instr.Addr.Referrers()) == 0 {`
`382`	`382`	`return`
`383`	`383`	`}`
`384`	`384`