This patch adds a guard on the use of pragma Weak_External. This pragma
affects link-time addresses of entities, and does not apply to types.
Previous to this patch the compiler would abort on a misuse of the
pragma.
Tested on x86_64-pc-linux-gnu, committed on trunk
2019-07-01 Ed Schonberg <schonb...@adacore.com>
gcc/ada/
* sem_prag.adb (Analyze_Pragma, case Weak_External): Pragma only
applies to entities with run-time addresses, not to types.
gcc/testsuite/
* gnat.dg/weak3.adb, gnat.dg/weak3.ads: New testcase.--- gcc/ada/sem_prag.adb
+++ gcc/ada/sem_prag.adb
@@ -25608,6 +25608,12 @@ package body Sem_Prag is
Ent := Underlying_Type (Ent);
end if;
+ -- The pragma applies to entities with addresses.
+
+ if Is_Type (Ent) then
+ Error_Pragma ("pragma applies to objects and subprograms");
+ end if;
+
-- The only processing required is to link this item on to the
-- list of rep items for the given entity. This is accomplished
-- by the call to Rep_Item_Too_Late (when no error is detected
--- /dev/null
new file mode 100644
+++ gcc/testsuite/gnat.dg/weak3.adb
@@ -0,0 +1,11 @@
+-- { dg-do compile }
+
+package body Weak3 is
+
+ type T is new Integer;
+ pragma Weak_External (T); -- { dg-error "pragma applies to objects and subprograms" }
+ X : T;
+
+ procedure Foo is null;
+
+end Weak3;
--- /dev/null
new file mode 100644
+++ gcc/testsuite/gnat.dg/weak3.ads
@@ -0,0 +1,3 @@
+package Weak3 is
+ procedure Foo;
+end Weak3;
