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-rw-r--r--compiler/typecheck/TcRnMonad.hs14
-rw-r--r--testsuite/tests/indexed-types/should_fail/T8129.stdout2
2 files changed, 9 insertions, 7 deletions
diff --git a/compiler/typecheck/TcRnMonad.hs b/compiler/typecheck/TcRnMonad.hs
index d3ae05861b..b958cf8306 100644
--- a/compiler/typecheck/TcRnMonad.hs
+++ b/compiler/typecheck/TcRnMonad.hs
@@ -662,18 +662,18 @@ updTcRef ref fn = liftIO $ do { old <- readIORef ref
-- Typechecker trace
traceTc :: String -> SDoc -> TcRn ()
traceTc =
- guardedTraceOptTcRn Opt_D_dump_tc_trace
+ labelledTraceOptTcRn Opt_D_dump_tc_trace
-- Renamer Trace
traceRn :: String -> SDoc -> TcRn ()
traceRn =
- guardedTraceOptTcRn Opt_D_dump_rn_trace
+ labelledTraceOptTcRn Opt_D_dump_rn_trace
--- | Do not display a trace if `-dno-debug-output` is on
-guardedTraceOptTcRn :: DumpFlag -> String -> SDoc -> TcRn ()
-guardedTraceOptTcRn flag herald doc = do
- unless opt_NoDebugOutput
- ( traceOptTcRn flag (formatTraceMsg herald doc) )
+-- | Trace when a certain flag is enabled. This is like `traceOptTcRn`
+-- but accepts a string as a label and formats the trace message uniformly.
+labelledTraceOptTcRn :: DumpFlag -> String -> SDoc -> TcRn ()
+labelledTraceOptTcRn flag herald doc = do
+ traceOptTcRn flag (formatTraceMsg herald doc)
formatTraceMsg :: String -> SDoc -> SDoc
formatTraceMsg herald doc = hang (text herald) 2 doc
diff --git a/testsuite/tests/indexed-types/should_fail/T8129.stdout b/testsuite/tests/indexed-types/should_fail/T8129.stdout
index bffa3dae0b..f2bab63c9e 100644
--- a/testsuite/tests/indexed-types/should_fail/T8129.stdout
+++ b/testsuite/tests/indexed-types/should_fail/T8129.stdout
@@ -1 +1,3 @@
• Could not deduce (C x0 (F x0))
+ • Could not deduce (C x0 (F x0))
+ • Could not deduce (C x0 (F x0))