gccrs: [E0571] break with argument in non-loop loop

Refactored error message similiar to rustc
& called error function.

gcc/rust/ChangeLog:

	* typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit):
	refactored error message & called error function.

gcc/testsuite/ChangeLog:

	* rust/compile/break2.rs: Modified file to pass test case.
	* rust/compile/break_with_value_inside_loop.rs: New test.

Signed-off-by: Muhammad Mahad <[email protected]>

gcc/rust/typecheck/rust-hir-type-check-expr.cc

@@ -1290,8 +1290,9 @@ TypeCheckExpr::visit (HIR::BreakExpr &expr)
       TyTy::BaseType *loop_context = context->peek_loop_context ();
       if (loop_context->get_kind () == TyTy::TypeKind::ERROR)
 	{
-	  rust_error_at (expr.get_locus (),
-			 "can only break with a value inside %<loop%>");
+	  rust_error_at (
+	    expr.get_locus (), ErrorCode::E0571,
+	    "can only %<break%> with a value inside a %<loop%> block");
 	  return;
 	}
 

gcc/testsuite/rust/compile/break2.rs

@@ -1,11 +1,12 @@
+// ErrorCode::E0571
 fn main() {
     let mut a = 1;
     let mut b = 1;
 
     let mut c;
     while b > 10 {
         if (b == 2) {
-            break b;  // { dg-error "can only break with a value inside 'loop'" }
+            break b; // { dg-error "can only .break. with a value inside a .loop. block" }
         }
         c = a + b;
         a = b;

gcc/testsuite/rust/compile/break_with_value_inside_loop.rs

@@ -0,0 +1,14 @@
+// https://doc.rust-lang.org/error_codes/E0571.html
+#![allow(unused)]
+fn main() {
+    let mut i = 1;
+    fn satisfied(n: usize) -> bool {
+        n % 23 == 0
+    }
+    let result = while true {
+        if satisfied(i) {
+            break 2 * i;   // { dg-error "can only .break. with a value inside a .loop. block" }
+        }
+        i += 1;
+    };
+}