[gcc(refs/users/mikael/heads/refactor_descriptor_v08)] Interdiction non-lvalue as lhs

[Mikael Morin]

https://gcc.gnu.org/g:c73084edf8b5f39aff73c34ccaa2ac10891f3db7

commit c73084edf8b5f39aff73c34ccaa2ac10891f3db7
Author: Mikael Morin <mikael@gcc.gnu.org>
Date:   Tue Feb 11 21:34:11 2025 +0100

    Interdiction non-lvalue as lhs
    
    git commit correction erreur gimplify

Diff:
---
 gcc/gimplify.cc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gcc/gimplify.cc b/gcc/gimplify.cc
index 900968356651..236107f354eb 100644
--- a/gcc/gimplify.cc
+++ b/gcc/gimplify.cc
@@ -7248,6 +7248,12 @@ gimplify_modify_expr (tree *expr_p, gimple_seq *pre_p, gimple_seq *post_p,
   gcc_assert (TREE_CODE (*expr_p) == MODIFY_EXPR
 	      || TREE_CODE (*expr_p) == INIT_EXPR);
 
+  if (TREE_CODE (*to_p) == NON_LVALUE_EXPR)
+    {
+      error ("non-lvalue used as lhs in %qD", *expr_p);
+      return GS_ERROR;
+    }
+
   /* Trying to simplify a clobber using normal logic doesn't work,
      so handle it here.  */
   if (TREE_CLOBBER_P (*from_p))