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[COMMITTED,23/35] ada: Improve recovery from illegal occurrence of 'Old in if_expression

Message ID 20240516092606.41242-23-poulhies@adacore.com
State New
Headers show
Series [COMMITTED,01/35] ada: Fix docs and comments about pragmas for Boolean-valued aspects | expand

Commit Message

Marc Poulhiès May 16, 2024, 9:25 a.m. UTC 
From: Piotr Trojanek <trojanek@adacore.com>

Fix assertion failure in developer builds which happened when the THEN
expression contains an illegal occurrence of 'Old and the type of the
THEN expression is left as Any_Type, but there is no ELSE expression.

gcc/ada/

	* sem_ch4.adb (Analyze_If_Expression): Add guard for
	if_expression without an ELSE part.

Tested on x86_64-pc-linux-gnu, committed on master.

---
 gcc/ada/sem_ch4.adb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/gcc/ada/sem_ch4.adb b/gcc/ada/sem_ch4.adb
index b4414a3f7ff..03364dade9f 100644
--- a/gcc/ada/sem_ch4.adb
+++ b/gcc/ada/sem_ch4.adb
@@ -2645,7 +2645,7 @@  package body Sem_Ch4 is
                  ("\ELSE expression has}!", Else_Expr, Etype (Else_Expr));
             end if;
 
-         else
+         elsif Present (Else_Expr) then
             if Is_Overloaded (Else_Expr) then
                Error_Msg_N
                  ("no interpretation compatible with type of THEN expression",