From: Piotr Trojanek <trojanek@adacore.com>
Date: Thu, 26 Sep 2024 06:40:28 +0000 (+0200)
Subject: ada: Fix asymmetry in resolution of unary intrinsic operators
X-Git-Tag: basepoints/gcc-16~4663
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c9328cb4b106a6b9afe3359e0287ece496b8e277;p=thirdparty%2Fgcc.git

ada: Fix asymmetry in resolution of unary intrinsic operators

Resolution of binary and unary intrinsic operators differed when
expansion was inactive. In particular, this affected GNATprove
handling of Ada.Real_Time."abs" operator. This patch makes unary
resolution behave like binary resolution.

gcc/ada/ChangeLog:

	* sem_res.adb (Resolve_Intrinsic_Unary_Operator): Disable when
	expansion is inactive.
---

diff --git a/gcc/ada/sem_res.adb b/gcc/ada/sem_res.adb
index 6a2680b6b1da..0abdeee8fbee 100644
--- a/gcc/ada/sem_res.adb
+++ b/gcc/ada/sem_res.adb
@@ -9972,6 +9972,13 @@ package body Sem_Res is
       Arg2 : Node_Id;
 
    begin
+      --  We must preserve the original entity in a generic setting, so that
+      --  the legality of the operation can be verified in an instance.
+
+      if not Expander_Active then
+         return;
+      end if;
+
       Op := Entity (N);
       while Scope (Op) /= Standard_Standard loop
          Op := Homonym (Op);