Update Safe Haskell tests

testsuite/tests/safeHaskell/check/Check01.hs

-{-# GHC_OPTIONS -fpackage-trust #-}
+{-# OPTIONS_GHC -fpackage-trust #-}
 {-# LANGUAGE Unsafe #-}
 module Check01 ( main' ) where
 

testsuite/tests/safeHaskell/check/Check05.hs

+{-# OPTIONS_GHC -fpackage-trust #-}
+module Check05 ( main' ) where
+
+main' = do
+    let n = 1
+    print $ n
+

testsuite/tests/safeHaskell/check/Check05.stderr

+
+Check05.hs:1:16:
+    Warning: -fpackage-trust ignored; must be specified with a Safe Haskell flag

testsuite/tests/safeHaskell/check/all.T

@@ -39,3 +39,6 @@ test('Check04', normal, multi_compile, ['Check04', [
                                        ('Check04_1.hs', '-trust base')
                                        ], '-fpackage-trust'])
 
+# Check -fpackage-trust with no safe haskell flag is an error
+test('Check05', normal, compile, [''])
+

testsuite/tests/safeHaskell/flags/SafeFlags18.stderr

+
+SafeFlags18.hs:1:16:
+    Warning: -fpackage-trust ignored; must be specified with a Safe Haskell flag
+
+<no location info>: 
+Failing due to -Werror.

testsuite/tests/safeHaskell/flags/all.T

@@ -37,7 +37,7 @@ test('SafeFlags14', normal, compile_fail, [''])
 test('SafeFlags15', normal, compile, [''])
 test('SafeFlags16', normal, compile, [''])
 test('SafeFlags17', normal, compile_fail, ['-distrust base'])
-test('SafeFlags18', normal, compile, ['-trust base'])
+test('SafeFlags18', normal, compile_fail, ['-trust base -Werror'])
 test('SafeFlags19', normal, compile_fail, [''])
 test('SafeFlags20', normal, compile, ['-trust base'])