gccrs: fix ice when function is outside of context

Fixes Rust-GCC#2477 gcc/rust/ChangeLog: * typecheck/rust-hir-type-check-expr.cc (TypeCheckExpr::visit): We need to check if a function context exists gcc/testsuite/ChangeLog: * rust/compile/issue-2477.rs: New test. Signed-off-by: Philip Herron <[email protected]>
MahadMuhammad · Jul 30, 2023 · 5ad0feb · 5ad0feb
1 parent 5785d32
commit 5ad0feb
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diff --git a/gcc/rust/typecheck/rust-hir-type-check-expr.cc b/gcc/rust/typecheck/rust-hir-type-check-expr.cc
@@ -150,6 +150,14 @@ TypeCheckExpr::visit (HIR::TupleExpr &expr)
 void
 TypeCheckExpr::visit (HIR::ReturnExpr &expr)
 {
+  if (!context->have_function_context ())
+    {
+      rust_error_at (expr.get_locus (),
+		     "return statement outside of function body");
+      infered = new TyTy::ErrorType (expr.get_mappings ().get_hirid ());
+      return;
+    }
+
   auto fn_return_tyty = context->peek_return_type ();
   location_t expr_locus = expr.has_return_expr ()
 			    ? expr.get_expr ()->get_locus ()

diff --git a/gcc/testsuite/rust/compile/issue-2477.rs b/gcc/testsuite/rust/compile/issue-2477.rs
@@ -0,0 +1,3 @@
+const FOO: u32 = return 0;
+// { dg-error "return statement outside of function body" "" { target *-*-* } .-1 }
+// { dg-error "expected .u32. got" "" { target *-*-* } .-2 }