[Ada] Add No_Tasking restriction is system.ads for bootstrap

gcc/ada/

	* gcc-interface/system.ads: Add No_Tasking restriction.

diff --git a/gcc/ada/gcc-interface/system.ads b/gcc/ada/gcc-interface/system.ads
index a468ae70a75f3ce319f4a75aef2bd6f313152a76..cfd9bb9e871df9040d8581458f7875bad09a38b1 100644 (file)
--- a/gcc/ada/gcc-interface/system.ads
+++ b/gcc/ada/gcc-interface/system.ads
@@ -50,6 +50,10 @@ pragma Restrictions (No_Finalization);
 --  access type on incomplete type Perm_Tree_Wrapper (which is required for
 --  defining a recursive type).
 
+pragma Restrictions (No_Tasking);
+--  Make it explicit that tasking is not used in the compiler, which also
+--  allows generating simpler and more efficient code.
+
 package System is
    pragma Pure;
    --  Note that we take advantage of the implementation permission to make