Fix crash when extern function item has no return type

philberty · philberty · commit bb351c7a73c3 · 2021-07-26T15:18:42.000+01:00
Return types are optional in rust and extern fn items can be a ZST for the result. Addresses #421 Fixes #595
diff --git a/gcc/rust/ast/rust-ast-full-test.cc b/gcc/rust/ast/rust-ast-full-test.cc
@@ -3595,7 +3595,8 @@ ExternalFunctionItem::as_string () const
     }
 
   // add type on new line
-  str += "\n (return) Type: " + return_type->as_string ();
+  str += "\n (return) Type: "
+	 + (has_return_type () ? return_type->as_string () : "()");
 
   // where clause
   str += "\n Where clause: ";

Original file line number	Diff line number	Diff line change
`@@ -3595,7 +3595,8 @@ ExternalFunctionItem::as_string () const`
`3595`	`3595`	`}`
`3596`	`3596`
`3597`	`3597`	`// add type on new line`
`3598`		`- str += "\n (return) Type: " + return_type->as_string ();`
	`3598`	`+ str += "\n (return) Type: "`
	`3599`	`+ + (has_return_type () ? return_type->as_string () : "()");`
`3599`	`3600`
`3600`	`3601`	`// where clause`
`3601`	`3602`	`str += "\n Where clause: ";`