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-rw-r--r--compiler/GHC/CmmToAsm/Dwarf.hs4
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/GHC/CmmToAsm/Dwarf.hs b/compiler/GHC/CmmToAsm/Dwarf.hs
index 58f0815329..2481a2dd73 100644
--- a/compiler/GHC/CmmToAsm/Dwarf.hs
+++ b/compiler/GHC/CmmToAsm/Dwarf.hs
@@ -6,6 +6,7 @@ import GHC.Prelude
import GHC.Cmm.CLabel
import GHC.Cmm.Expr
+import GHC.Data.FastString
import GHC.Settings.Config ( cProjectName, cProjectVersion )
import GHC.Types.Tickish ( CmmTickish, GenTickish(..) )
import GHC.Cmm.DebugBlock
@@ -177,7 +178,8 @@ procToDwarf :: NCGConfig -> DebugBlock -> DwarfInfo
procToDwarf config prc
= DwarfSubprogram { dwChildren = map (blockToDwarf config) (dblBlocks prc)
, dwName = case dblSourceTick prc of
- Just s@SourceNote{} -> sourceName s
+ Just s@SourceNote{} -> case sourceName s of
+ LexicalFastString s -> unpackFS s
_otherwise -> show (dblLabel prc)
, dwLabel = dblCLabel prc
, dwParent = fmap mkAsmTempDieLabel