[project @ 2004-03-11 10:00:23 by simonmar]

Don't call hGetArray with a size of zero (fixes read021).

diff --git a/ghc/compiler/utils/StringBuffer.lhs b/ghc/compiler/utils/StringBuffer.lhs
index 7c61b5b..6c5d653 100644 (file)
--- a/ghc/compiler/utils/StringBuffer.lhs
+++ b/ghc/compiler/utils/StringBuffer.lhs
@@ -98,7 +98,7 @@ hGetStringBuffer fname = do
    r <- hGetBufBA h arr size_i
 #else
    arr <- newArray_ (0,size_i-1)
-   r <- hGetArray h arr size_i
+   r <- if size_i == 0 then return 0 else hGetArray h arr size_i
 #endif
    if (r /= size_i)
        then ioError (userError "short read of file")