They had originally been applied to the ACATS 2 testsuite and I forgot to 
reapply them to the ACATS 4 testsuite altogether.

Tested on x86-64/Linux, applied on the mainline.


2025-07-07  Eric Botcazou  <ebotca...@adacore.com>

        * ada/acats-3/tests/c9/c94001c.ada: Tweak delay statements.
        * ada/acats-4/tests/c9/c94001c.ada: Likewise.
        * ada/acats-4/tests/c9/c94006a.ada: Likewise.
        * ada/acats-4/tests/c9/c94008c.ada: Likewise.
        * ada/acats-4/tests/c9/c951002.a: Likewise.
        * ada/acats-4/tests/c9/c954a01.a: Likewise.
        * ada/acats-4/tests/c9/c940005.a: Tweak duration constant.
        * ada/acats-4/tests/c9/c940007.a: Likewise.
        * ada/acats-4/tests/c9/c96001a.ada: Likewise.

-- 
Eric Botcazou
diff --git a/gcc/testsuite/ada/acats-3/tests/c9/c94001c.ada b/gcc/testsuite/ada/acats-3/tests/c9/c94001c.ada
index 0cc14f495cd..df38f99d735 100644
--- a/gcc/testsuite/ada/acats-3/tests/c9/c94001c.ada
+++ b/gcc/testsuite/ada/acats-3/tests/c9/c94001c.ada
@@ -211,7 +211,7 @@ BEGIN
 
      BEGIN -- (E)
           WHILE NOT(OUT_TSK'TERMINATED) AND DELAY_COUNT < 60 LOOP
-               DELAY 1.0;
+               DELAY 1.0 * Impdef.One_Long_Second;
                DELAY_COUNT := DELAY_COUNT + 1;
           END LOOP;
           IF DELAY_COUNT = 60 THEN
@@ -254,7 +254,7 @@ BEGIN
 
      BEGIN
           WHILE NOT(OUT_TSK'TERMINATED) AND DELAY_COUNT < 60 LOOP
-               DELAY 1.0;
+               DELAY 1.0 * Impdef.One_Long_Second;
                DELAY_COUNT := DELAY_COUNT + 1;
           END LOOP;
           IF DELAY_COUNT = 60 THEN
diff --git a/gcc/testsuite/ada/acats-4/tests/c9/c940005.a b/gcc/testsuite/ada/acats-4/tests/c9/c940005.a
index adb58b18ca4..47a97bf2de6 100644
--- a/gcc/testsuite/ada/acats-4/tests/c9/c940005.a
+++ b/gcc/testsuite/ada/acats-4/tests/c9/c940005.a
@@ -85,7 +85,7 @@ begin
       -- In reality one would expect a time of 5 to 10 seconds.  In
       -- the interests of speeding up the test suite a shorter time
       -- is used
-      Pulse_Time_Delta : constant duration := ImpDef.Switch_To_New_Task;
+      Pulse_Time_Delta : constant duration := ImpDef.Long_Switch_To_New_Task;
 
       -- control over stopping tasks
       protected Control is
diff --git a/gcc/testsuite/ada/acats-4/tests/c9/c940007.a b/gcc/testsuite/ada/acats-4/tests/c9/c940007.a
index c678463633a..41e80f4e25e 100644
--- a/gcc/testsuite/ada/acats-4/tests/c9/c940007.a
+++ b/gcc/testsuite/ada/acats-4/tests/c9/c940007.a
@@ -90,7 +90,7 @@ begin
       -- In reality one would expect a time of 5 to 10 seconds.  In
       -- the interests of speeding up the test suite a shorter time
       -- is used
-      Pulse_Time_Delta : constant duration := ImpDef.Switch_To_New_Task;
+      Pulse_Time_Delta : constant duration := ImpDef.Long_Switch_To_New_Task;
 
 
       -- control over stopping tasks
diff --git a/gcc/testsuite/ada/acats-4/tests/c9/c94001c.ada b/gcc/testsuite/ada/acats-4/tests/c9/c94001c.ada
index 0cc14f495cd..df38f99d735 100644
--- a/gcc/testsuite/ada/acats-4/tests/c9/c94001c.ada
+++ b/gcc/testsuite/ada/acats-4/tests/c9/c94001c.ada
@@ -211,7 +211,7 @@ BEGIN
 
      BEGIN -- (E)
           WHILE NOT(OUT_TSK'TERMINATED) AND DELAY_COUNT < 60 LOOP
-               DELAY 1.0;
+               DELAY 1.0 * Impdef.One_Long_Second;
                DELAY_COUNT := DELAY_COUNT + 1;
           END LOOP;
           IF DELAY_COUNT = 60 THEN
@@ -254,7 +254,7 @@ BEGIN
 
      BEGIN
           WHILE NOT(OUT_TSK'TERMINATED) AND DELAY_COUNT < 60 LOOP
-               DELAY 1.0;
+               DELAY 1.0 * Impdef.One_Long_Second;
                DELAY_COUNT := DELAY_COUNT + 1;
           END LOOP;
           IF DELAY_COUNT = 60 THEN
diff --git a/gcc/testsuite/ada/acats-4/tests/c9/c94006a.ada b/gcc/testsuite/ada/acats-4/tests/c9/c94006a.ada
index 6b9c85f490e..cac5fc6e09c 100644
--- a/gcc/testsuite/ada/acats-4/tests/c9/c94006a.ada
+++ b/gcc/testsuite/ada/acats-4/tests/c9/c94006a.ada
@@ -28,6 +28,7 @@
 -- TBN  9/17/86
 -- PWN 01/31/95  REMOVED PRAGMA PRIORITY FOR ADA 9X.
 
+with Impdef;
 WITH REPORT; USE REPORT;
 WITH SYSTEM; USE SYSTEM;
 PROCEDURE C94006A IS
@@ -41,7 +42,7 @@ PROCEDURE C94006A IS
           SELECT
                ACCEPT E;
           OR
-               DELAY 30.0;
+               DELAY 30.0 * Impdef.One_Long_Second;
           END SELECT;
      END TT;
 
diff --git a/gcc/testsuite/ada/acats-4/tests/c9/c94008c.ada b/gcc/testsuite/ada/acats-4/tests/c9/c94008c.ada
index 6d10e25f024..fb2eee97f69 100644
--- a/gcc/testsuite/ada/acats-4/tests/c9/c94008c.ada
+++ b/gcc/testsuite/ada/acats-4/tests/c9/c94008c.ada
@@ -33,6 +33,7 @@
 -- JBG 8/29/86 ELIMINATED SHARED VARIABLES; ADDED GENERIC UNIT
 -- PWN 11/30/94 REMOVED PRAGMA PRIORITY INSTANCES FOR ADA 9X.
 
+with Impdef;
 WITH REPORT; USE REPORT;
 WITH SYSTEM; USE SYSTEM;
 PROCEDURE C94008C IS
@@ -198,10 +199,10 @@ BEGIN -- C94008C
                     OR WHEN ENTER_TERMINATE => TERMINATE;
                     END SELECT;
 
-                    DELAY 10.0;
+                    DELAY 10.0 * Impdef.One_Second;
 
                     IF TERMINATE_COUNT.GET /= 1 THEN
-                         DELAY 20.0;
+                         DELAY 20.0 * Impdef.One_Long_Second;
                     END IF;
 
                     IF TERMINATE_COUNT.GET /= 1 THEN
@@ -239,10 +240,10 @@ BEGIN -- C94008C
 
      BEGIN
 
-          DELAY 10.0; -- WAIT FOR T1, T2, AND T3 TO GET TO SELECT STMTS.
+          DELAY 10.0 * Impdef.One_Second; -- WAIT FOR T1, T2, AND T3 TO GET TO SELECT STMTS.
 
            IF TERMINATE_COUNT.GET /= 3 THEN
-                DELAY 20.0;
+                DELAY 20.0 * Impdef.One_Long_Second;
            END IF;
 
            IF TERMINATE_COUNT.GET /= 3 THEN
diff --git a/gcc/testsuite/ada/acats-4/tests/c9/c951002.a b/gcc/testsuite/ada/acats-4/tests/c9/c951002.a
index 8ccb2d012fe..65b696c4af9 100644
--- a/gcc/testsuite/ada/acats-4/tests/c9/c951002.a
+++ b/gcc/testsuite/ada/acats-4/tests/c9/c951002.a
@@ -278,14 +278,14 @@ begin
       -- Wait until the message is queued on the entry before starting
       -- the Credit_Task
       while not Hold.TC_Message_is_Queued loop
-         delay ImpDef.Minimum_Task_Switch;   
+         delay ImpDef.Long_Minimum_Task_Switch;   
       end loop;
       --
       Credit_Task.TC_Start;
 
       -- Ensure the first part of the test is complete before continuing
       while not (Credit_Message'terminated and Credit_Task'terminated) loop
-         delay ImpDef.Minimum_Task_Switch;   
+         delay ImpDef.Long_Minimum_Task_Switch;   
       end loop;
 
       --======================================================
@@ -298,12 +298,12 @@ begin
       -- for it to reach the accept statement and call Hold.Set_DB_Overload
       -- before starting Debit_Message
       --
-      delay ImpDef.Switch_To_New_Task;
+      delay ImpDef.Long_Switch_To_New_Task;
 
       Debit_Message.TC_Start;
 
       while not Debit_Task'terminated loop
-         delay ImpDef.Minimum_Task_Switch;   
+         delay ImpDef.Long_Minimum_Task_Switch;   
       end loop;    
   
       Hold.Clear_DB_Overload;  -- Allow completion 
diff --git a/gcc/testsuite/ada/acats-4/tests/c9/c954a01.a b/gcc/testsuite/ada/acats-4/tests/c9/c954a01.a
index 34f48b29171..3ea545a8f0e 100644
--- a/gcc/testsuite/ada/acats-4/tests/c9/c954a01.a
+++ b/gcc/testsuite/ada/acats-4/tests/c9/c954a01.a
@@ -148,7 +148,7 @@ package body C954A01_0 is  -- Printer server abstraction.
          end select;
 
          -- Allow other tasks to get control
-         delay ImpDef.Minimum_Task_Switch;
+         delay ImpDef.Long_Minimum_Task_Switch;
 
       end loop;
 
@@ -175,7 +175,7 @@ use  F954A00;
 
 procedure C954A01 is
 
-   Long_Enough : constant Duration := ImpDef.Switch_To_New_Task;
+   Long_Enough : constant Duration := ImpDef.Long_Switch_To_New_Task;
 
                --==============================================--
 
diff --git a/gcc/testsuite/ada/acats-4/tests/c9/c96001a.ada b/gcc/testsuite/ada/acats-4/tests/c9/c96001a.ada
index 74374b9603d..f958ea107fe 100644
--- a/gcc/testsuite/ada/acats-4/tests/c9/c96001a.ada
+++ b/gcc/testsuite/ada/acats-4/tests/c9/c96001a.ada
@@ -36,6 +36,7 @@
 --     RJW 11/13/87  ADDED CODE WHICH ALLOWS TEST TO REPORT "PASSED"
 --                   IF TICK > DURATION'SMALL.
 
+with Impdef;
 WITH CALENDAR;  USE CALENDAR;
 WITH SYSTEM;    USE SYSTEM;
 WITH REPORT;    USE REPORT;
@@ -50,7 +51,7 @@ BEGIN
      ---------------------------------------------
 
      DECLARE   -- (A)
-          X : DURATION := 5.0;
+          X : DURATION := 5.0 * Impdef.One_Second;
           OLD_TIME : TIME;
           LAPSE : DURATION;
      BEGIN     -- (A)
@@ -138,8 +139,8 @@ BEGIN
      ---------------------------------------------
 
      DECLARE   -- (E)
-          INC1 : DURATION := 2.0;
-          INC2 : DURATION := 3.0;
+          INC1 : DURATION := 2.0 * Impdef.One_Second;
+          INC2 : DURATION := 3.0 * Impdef.One_Second;
           OLD_TIME : TIME;
           LAPSE : DURATION;
      BEGIN     -- (E)

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