From: Bob Duff <duff@adacore.com>
Date: Wed, 17 Nov 2021 17:06:32 +0000 (-0500)
Subject: [Ada] Fix crash on pragma Compile_Time_Warning/Error
X-Git-Tag: basepoints/gcc-13~2633
X-Git-Url: https://gcc.gnu.org/git/?a=commitdiff_plain;h=9ce9322ccc4aa873d732554c895b821c90017511;p=gcc.git

[Ada] Fix crash on pragma Compile_Time_Warning/Error

gcc/ada/

	* sem_prag.adb (Process_Compile_Time_Warning_Or_Error): Do not
	follow the Corresponding_Spec pointer if Acts_As_Spec is True,
	because Corresponding_Spec is Empty in that case, so we would
	exit the loop prematurely, and incorrectly think we are not
	inside a generic unit when we are.
---

diff --git a/gcc/ada/sem_prag.adb b/gcc/ada/sem_prag.adb
index 1d5cc2535bdf..9fdec53b3741 100644
--- a/gcc/ada/sem_prag.adb
+++ b/gcc/ada/sem_prag.adb
@@ -7827,11 +7827,15 @@ package body Sem_Prag is
 
          if Compile_Time_Known_Value (Arg1x) then
             Validate_Compile_Time_Warning_Or_Error (N, Sloc (Arg1));
+
          else
             while Present (P) and then Nkind (P) not in N_Generic_Declaration
             loop
-               if Nkind (P) in N_Package_Body | N_Subprogram_Body then
-                  P := Corresponding_Spec (P);
+               if (Nkind (P) = N_Subprogram_Body and then not Acts_As_Spec (P))
+                 or else Nkind (P) = N_Package_Body
+               then
+                  P := Parent (Corresponding_Spec (P));
+
                else
                   P := Parent (P);
                end if;