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-rw-r--r--compiler/utils/StringBuffer.lhs10
1 files changed, 6 insertions, 4 deletions
diff --git a/compiler/utils/StringBuffer.lhs b/compiler/utils/StringBuffer.lhs
index a89c0d2ba9..d51c800fca 100644
--- a/compiler/utils/StringBuffer.lhs
+++ b/compiler/utils/StringBuffer.lhs
@@ -125,12 +125,14 @@ appendStringBuffers sb1 sb2
withForeignPtr newBuf $ \ptr ->
withForeignPtr (buf sb1) $ \sb1Ptr ->
withForeignPtr (buf sb2) $ \sb2Ptr ->
- do copyArray (sb1Ptr `advancePtr` cur sb1) ptr (calcLen sb1)
- copyArray (sb2Ptr `advancePtr` cur sb2) (ptr `advancePtr` cur sb1) (calcLen sb2)
+ do copyArray ptr (sb1Ptr `advancePtr` cur sb1) sb1_len
+ copyArray (ptr `advancePtr` sb1_len) (sb2Ptr `advancePtr` cur sb2) sb2_len
pokeArray (ptr `advancePtr` size) [0,0,0]
return (StringBuffer newBuf size 0)
- where calcLen sb = len sb - cur sb
- size = calcLen sb1 + calcLen sb2
+ where sb1_len = calcLen sb1
+ sb2_len = calcLen sb2
+ calcLen sb = len sb - cur sb
+ size = sb1_len + sb2_len
stringToStringBuffer :: String -> IO StringBuffer
stringToStringBuffer str = do