[project @ 1998-08-14 13:06:56 by sof]

Better error messages

ghc/lib/posix/PosixDB.lhs

@@ -46,7 +46,7 @@ getGroupEntryForID gid =
     _ccall_ getgrgid gid  >>= \ ptr ->
     if ptr == (``NULL'' :: Addr) then
 	fail (IOError Nothing NoSuchThing
-	     "getGroupEntryForID: no such group entry")
+	     "getGroupEntryForID" "no such group entry")
     else
 	unpackGroupEntry ptr
 
@@ -56,7 +56,7 @@ getGroupEntryForName name =
     _ccall_ getgrnam gname		>>= \ ptr ->
     if ptr == (``NULL'' :: Addr) then
 	fail (IOError Nothing NoSuchThing
-	     "getGroupEntryForName: no such group entry")
+	     "getGroupEntryForName" "no such group entry")
     else
 	unpackGroupEntry ptr
 
@@ -65,7 +65,7 @@ getUserEntryForID uid =
     _ccall_ getpwuid uid		>>= \ ptr ->
     if ptr == ``NULL'' then
 	fail (IOError Nothing NoSuchThing
-	     "getUserEntryForID: no such user entry")
+	     "getUserEntryForID" "no such user entry")
     else
 	unpackUserEntry ptr
 
@@ -75,7 +75,7 @@ getUserEntryForName name =
     _ccall_ getpwnam uname		>>= \ ptr ->
     if ptr == ``NULL'' then
 	fail (IOError Nothing NoSuchThing
-	     "getUserEntryForName: no such user entry")
+	     "getUserEntryForName" "no such user entry")
     else
 	unpackUserEntry ptr
 \end{code}

ghc/lib/posix/PosixFiles.lhs

@@ -128,7 +128,7 @@ readDirStream dirp = do
        else do
 	     errno <- getErrorCode
 	     if errno == noError
-		then fail (IOError Nothing EOF "EOF")
+		then fail (IOError Nothing EOF "readDirStream" "EOF")
 		else syserr "readDirStream"
 
 rewindDirStream :: DirStream -> IO ()
@@ -529,7 +529,7 @@ pathconf n name = do
      else do
 	  errno <-  getErrorCode
 	  if errno == invalidArgument
-	     then fail (IOError Nothing NoSuchThing "PosixFiles.getPathVar: no such path limit or option")
+	     then fail (IOError Nothing NoSuchThing "getPathVar" "no such path limit or option")
 	     else syserr "PosixFiles.getPathVar"
 
 
@@ -553,7 +553,7 @@ fpathconf n fd = do
     else do
 	 errno <-  getErrorCode
 	 if errno == invalidArgument
-	    then fail (IOError Nothing NoSuchThing "getFileVar: no such path limit or option")
+	    then fail (IOError Nothing NoSuchThing "getFileVar" "no such path limit or option")
 	    else syserr "getFileVar"
 
 \end{code}