diff options
Diffstat (limited to 'compiler/GHC/Core/Lint.hs')
| -rw-r--r-- | compiler/GHC/Core/Lint.hs | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/compiler/GHC/Core/Lint.hs b/compiler/GHC/Core/Lint.hs index 7bb1eb43aa..566b0985e2 100644 --- a/compiler/GHC/Core/Lint.hs +++ b/compiler/GHC/Core/Lint.hs @@ -302,6 +302,10 @@ path does not result in allocation in the hot path. This can be surprisingly impactful. Changing `lint_app` reduced allocations for one test program I was looking at by ~4%. +Note [MCInfo for Lint] +~~~~~~~~~~~~~~~~~~~~~~ +When printing a Lint message, use the MCInfo severity so that the +message is printed on stderr rather than stdout (#13342). ************************************************************************ * * @@ -425,7 +429,7 @@ displayLintResults :: Logger -> IO () displayLintResults logger display_warnings pp_what pp_pgm (warns, errs) | not (isEmptyBag errs) - = do { logMsg logger Err.MCDump noSrcSpan + = do { logMsg logger Err.MCInfo noSrcSpan -- See Note [MCInfo for Lint] $ withPprStyle defaultDumpStyle (vcat [ lint_banner "errors" pp_what, Err.pprMessageBag errs , text "*** Offending Program ***" @@ -436,9 +440,7 @@ displayLintResults logger display_warnings pp_what pp_pgm (warns, errs) | not (isEmptyBag warns) , log_enable_debug (logFlags logger) , display_warnings - -- If the Core linter encounters an error, output to stderr instead of - -- stdout (#13342) - = logMsg logger Err.MCInfo noSrcSpan + = logMsg logger Err.MCInfo noSrcSpan -- See Note [MCInfo for Lint] $ withPprStyle defaultDumpStyle (lint_banner "warnings" pp_what $$ Err.pprMessageBag (mapBag ($$ blankLine) warns)) |