@@ -2080,9 +2080,6 @@ convert_lvalue_to_rvalue (location_t loc, struct c_expr exp,
exp = default_function_array_conversion (loc, exp);
if (!VOID_TYPE_P (TREE_TYPE (exp.value)))
exp.value = require_complete_type (loc, exp.value);
- if (convert_p && !error_operand_p (exp.value)
- && (TREE_CODE (TREE_TYPE (exp.value)) != ARRAY_TYPE))
- exp.value = convert (build_qualified_type (TREE_TYPE (exp.value), TYPE_UNQUALIFIED),
exp.value);
if (really_atomic_lvalue (exp.value))
{
vec<tree, va_gc> *params;
@@ -2119,6 +2116,9 @@ convert_lvalue_to_rvalue (location_t loc, struct c_expr exp,
exp.value = build4 (TARGET_EXPR, nonatomic_type, tmp, func_call,
NULL_TREE, NULL_TREE);
}
+ if (convert_p && !error_operand_p (exp.value)
+ && (TREE_CODE (TREE_TYPE (exp.value)) != ARRAY_TYPE))
+ exp.value = convert (build_qualified_type (TREE_TYPE (exp.value), TYPE_UNQUALIFIED),
exp.value);
return exp;
}
@@ -15,7 +15,7 @@ atomic_int
fn2 (void)
{
atomic_int y = 0;
- y; /* { dg-warning "statement with no effect" } */
+ y;
return y;
}
new file mode 100644
@@ -0,0 +1,15 @@
+/* PR c/97981 */
+/* { dg-do compile } */
+/* { dg-options "-fdump-tree-original" } */
+/* { dg-final { scan-tree-dump-times "atomic_load" 2 "original" } } */
+
+
+void f(void)
+{
+ volatile _Atomic int x;
+ x;
+ volatile _Atomic double a;
+ double b;
+ b = a;
+}
+