15 files changed, 15 insertions, 15 deletions
diff --git a/testsuite/tests/annotations/should_fail/annfail03.stderr b/testsuite/tests/annotations/should_fail/annfail03.stderr
index 625b5d1b47..77362f800e 100644
--- a/testsuite/tests/annotations/should_fail/annfail03.stderr
+++ b/testsuite/tests/annotations/should_fail/annfail03.stderr
@@ -1,5 +1,5 @@
 
-annfail03.hs:17:11:
+annfail03.hs:17:11: [GHC-18157]
     GHC stage restriction:
       ‘InModule’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/annotations/should_fail/annfail04.stderr b/testsuite/tests/annotations/should_fail/annfail04.stderr
index 0226a40134..4130717a1e 100644
--- a/testsuite/tests/annotations/should_fail/annfail04.stderr
+++ b/testsuite/tests/annotations/should_fail/annfail04.stderr
@@ -1,5 +1,5 @@
 
-annfail04.hs:14:12:
+annfail04.hs:14:12: [GHC-18157]
     GHC stage restriction:
       instance for ‘Thing
                       Int’ is used in a top-level splice, quasi-quote, or annotation,
diff --git a/testsuite/tests/annotations/should_fail/annfail06.stderr b/testsuite/tests/annotations/should_fail/annfail06.stderr
index 7a7f715fe4..8c17b71103 100644
--- a/testsuite/tests/annotations/should_fail/annfail06.stderr
+++ b/testsuite/tests/annotations/should_fail/annfail06.stderr
@@ -1,5 +1,5 @@
 
-annfail06.hs:22:1:
+annfail06.hs:22:1: [GHC-18157]
     GHC stage restriction:
       instance for ‘Data
                       InstancesInWrongModule’ is used in a top-level splice, quasi-quote, or annotation,
diff --git a/testsuite/tests/annotations/should_fail/annfail09.stderr b/testsuite/tests/annotations/should_fail/annfail09.stderr
index 35bdaf7b48..22fe13193e 100644
--- a/testsuite/tests/annotations/should_fail/annfail09.stderr
+++ b/testsuite/tests/annotations/should_fail/annfail09.stderr
@@ -1,5 +1,5 @@
 
-annfail09.hs:11:11:
+annfail09.hs:11:11: [GHC-18157]
     GHC stage restriction:
       ‘g’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/quasiquotation/qq001/qq001.stderr b/testsuite/tests/quasiquotation/qq001/qq001.stderr
index 350dd418c0..d1fdbdf62e 100644
--- a/testsuite/tests/quasiquotation/qq001/qq001.stderr
+++ b/testsuite/tests/quasiquotation/qq001/qq001.stderr
@@ -1,5 +1,5 @@
 
-qq001.hs:7:16:
+qq001.hs:7:16: [GHC-18157]
     GHC stage restriction:
       ‘parse’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/quasiquotation/qq002/qq002.stderr b/testsuite/tests/quasiquotation/qq002/qq002.stderr
index 12ab3751dd..984ce45272 100644
--- a/testsuite/tests/quasiquotation/qq002/qq002.stderr
+++ b/testsuite/tests/quasiquotation/qq002/qq002.stderr
@@ -1,5 +1,5 @@
 
-qq002.hs:8:10:
+qq002.hs:8:10: [GHC-18157]
     GHC stage restriction:
       ‘parse’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/quasiquotation/qq003/qq003.stderr b/testsuite/tests/quasiquotation/qq003/qq003.stderr
index dd7fa8c872..ad6972ada4 100644
--- a/testsuite/tests/quasiquotation/qq003/qq003.stderr
+++ b/testsuite/tests/quasiquotation/qq003/qq003.stderr
@@ -1,5 +1,5 @@
 
-qq003.hs:5:26:
+qq003.hs:5:26: [GHC-18157]
     GHC stage restriction:
       ‘parse’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/quasiquotation/qq004/qq004.stderr b/testsuite/tests/quasiquotation/qq004/qq004.stderr
index 7cd33e1e6f..97a0bb0b1a 100644
--- a/testsuite/tests/quasiquotation/qq004/qq004.stderr
+++ b/testsuite/tests/quasiquotation/qq004/qq004.stderr
@@ -1,5 +1,5 @@
 
-qq004.hs:8:21:
+qq004.hs:8:21: [GHC-18157]
     GHC stage restriction:
       ‘parse’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/th/T17820a.stderr b/testsuite/tests/th/T17820a.stderr
index 2a4b5c2f25..81126d1aa5 100644
--- a/testsuite/tests/th/T17820a.stderr
+++ b/testsuite/tests/th/T17820a.stderr
@@ -1,5 +1,5 @@
 
-T17820a.hs:7:17: error:
+T17820a.hs:7:17: error: [GHC-18157]
     GHC stage restriction:
       ‘C’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/th/T17820b.stderr b/testsuite/tests/th/T17820b.stderr
index 941a3b1e49..4ebe1f60b9 100644
--- a/testsuite/tests/th/T17820b.stderr
+++ b/testsuite/tests/th/T17820b.stderr
@@ -1,5 +1,5 @@
 
-T17820b.hs:7:17: error:
+T17820b.hs:7:17: error: [GHC-18157]
     GHC stage restriction:
       ‘f’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/th/T17820c.stderr b/testsuite/tests/th/T17820c.stderr
index 469a94352c..d6d0bcd42f 100644
--- a/testsuite/tests/th/T17820c.stderr
+++ b/testsuite/tests/th/T17820c.stderr
@@ -1,5 +1,5 @@
 
-T17820c.hs:8:18: error:
+T17820c.hs:8:18: error: [GHC-18157]
     GHC stage restriction:
       ‘meth’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/th/T17820d.stderr b/testsuite/tests/th/T17820d.stderr
index 3d624c7104..526228094d 100644
--- a/testsuite/tests/th/T17820d.stderr
+++ b/testsuite/tests/th/T17820d.stderr
@@ -1,5 +1,5 @@
 
-T17820d.hs:6:38: error:
+T17820d.hs:6:38: error: [GHC-28914]
     • Stage error: ‘foo’ is bound at stage 2 but used at stage 1
     • In the untyped splice: $(const [| 0 |] foo)
       In the Template Haskell quotation
diff --git a/testsuite/tests/th/T17820e.stderr b/testsuite/tests/th/T17820e.stderr
index 2c74b263e2..a1984c126a 100644
--- a/testsuite/tests/th/T17820e.stderr
+++ b/testsuite/tests/th/T17820e.stderr
@@ -1,5 +1,5 @@
 
-T17820e.hs:9:17: error:
+T17820e.hs:9:17: error: [GHC-18157]
     GHC stage restriction:
       ‘C’ is used in a top-level splice, quasi-quote, or annotation,
       and must be imported, not defined locally
diff --git a/testsuite/tests/th/T21547.stderr b/testsuite/tests/th/T21547.stderr
index a37b98aa85..60b76cf424 100644
--- a/testsuite/tests/th/T21547.stderr
+++ b/testsuite/tests/th/T21547.stderr
@@ -1,5 +1,5 @@
 
-T21547.hs:9:14: error:
+T21547.hs:9:14: error: [GHC-18157]
     • GHC stage restriction:
         instance for ‘base-4.16.0.0:Data.Typeable.Internal.Typeable
                         T’ is used in a top-level splice, quasi-quote, or annotation,
diff --git a/testsuite/tests/th/T5795.stderr b/testsuite/tests/th/T5795.stderr
index 95af718c98..bc0dd2ef0f 100644
--- a/testsuite/tests/th/T5795.stderr
+++ b/testsuite/tests/th/T5795.stderr
@@ -1,5 +1,5 @@
 
-T5795.hs:9:7: error:
+T5795.hs:9:7: error: [GHC-18157]
     • GHC stage restriction:
         ‘ty’ is used in a top-level splice, quasi-quote, or annotation,
         and must be imported, not defined locally