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-rw-r--r--compiler/GHC/StgToJS/Prim.hs1
1 files changed, 1 insertions, 0 deletions
diff --git a/compiler/GHC/StgToJS/Prim.hs b/compiler/GHC/StgToJS/Prim.hs
index b1538989d7..1aa8533e7d 100644
--- a/compiler/GHC/StgToJS/Prim.hs
+++ b/compiler/GHC/StgToJS/Prim.hs
@@ -445,6 +445,7 @@ genPrim _ _ NewAlignedPinnedByteArrayOp_Char [r] [l,_align] = PrimInline (newB
genPrim _ _ MutableByteArrayIsPinnedOp [r] [_] = PrimInline $ r |= one_
genPrim _ _ ByteArrayIsPinnedOp [r] [_] = PrimInline $ r |= one_
genPrim _ _ ByteArrayContents_Char [a,o] [b] = PrimInline $ mconcat [a |= b, o |= zero_]
+genPrim _ _ MutableByteArrayContents_Char [a,o] [b] = PrimInline $ mconcat [a |= b, o |= zero_]
genPrim _ _ ShrinkMutableByteArrayOp_Char [] [a,n] = PrimInline $ appS "h$shrinkMutableByteArray" [a,n]
genPrim _ _ ResizeMutableByteArrayOp_Char [r] [a,n] = PrimInline $ r |= app "h$resizeMutableByteArray" [a,n]
genPrim _ _ UnsafeFreezeByteArrayOp [a] [b] = PrimInline $ a |= b