[PATCH RFC 10/13] symbol: flag builtins constant_p, safe_p and warning as constexprs

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Unconditionally flag the expressions
  __builtin_constant_p(),
  __builtin_safe_p(),
  __builtin_warning()
as being integer constant expressions.

Signed-off-by: Nicolai Stange <nicstange@xxxxxxxxx>
---
 symbol.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/symbol.c b/symbol.c
index 0ceff62..cbc846b 100644
--- a/symbol.c
+++ b/symbol.c
@@ -642,9 +642,10 @@ struct symbol *create_symbol(int stream, const char *name, int type, int namespa
 	return sym;
 }
 
-static int evaluate_to_integer(struct expression *expr)
+static int evaluate_to_int_const_expr(struct expression *expr)
 {
 	expr->ctype = &int_ctype;
+	expr->flags |= expr_set_flag_mask(EXPR_FLAG_INT_CONST_EXPR);
 	return 1;
 }
 
@@ -749,17 +750,17 @@ out:
 }
 
 static struct symbol_op constant_p_op = {
-	.evaluate = evaluate_to_integer,
+	.evaluate = evaluate_to_int_const_expr,
 	.expand = expand_constant_p
 };
 
 static struct symbol_op safe_p_op = {
-	.evaluate = evaluate_to_integer,
+	.evaluate = evaluate_to_int_const_expr,
 	.expand = expand_safe_p
 };
 
 static struct symbol_op warning_op = {
-	.evaluate = evaluate_to_integer,
+	.evaluate = evaluate_to_int_const_expr,
 	.expand = expand_warning
 };
 
-- 
2.4.5

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