1 files changed, 13 insertions, 0 deletions
diff --git a/gcc/c-common.h b/gcc/c-common.h
index 63c095c0781..d0fbaa837df 100644
--- a/gcc/c-common.h
+++ b/gcc/c-common.h
@@ -873,6 +873,19 @@ extern void verify_sequence_points (tree);
 
 extern tree fold_offsetof (tree);
 
+/* Places where an lvalue, or modifiable lvalue, may be required.
+   Used to select diagnostic messages in lvalue_or_else and
+   readonly_error.  */
+enum lvalue_use {
+  lv_assign,
+  lv_increment,
+  lv_decrement,
+  lv_addressof,
+  lv_asm
+};
+
+extern int lvalue_or_else (tree, enum lvalue_use);
+
 /* In c-gimplify.c  */
 extern void c_genericize (tree);
 extern int c_gimplify_expr (tree *, tree *, tree *);