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-rw-r--r--lib/system/sysio.nim4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/system/sysio.nim b/lib/system/sysio.nim
index 5c10392f1..29c5777cc 100644
--- a/lib/system/sysio.nim
+++ b/lib/system/sysio.nim
@@ -336,8 +336,8 @@ proc open(f: var File, filehandle: FileHandle, mode: FileMode): bool =
   f = c_fdopen(filehandle, FormatOpen[mode])
   result = f != nil
 
-proc setFilePos(f: File, pos: int64) =
-  if c_fseek(f, clong(pos), 0) != 0:
+proc setFilePos(f: File, pos: int64, relativeTo: FileSeekPos = fspSet) =
+  if c_fseek(f, clong(pos), cint(relativeTo)) != 0:
     raiseEIO("cannot set file position")
 
 proc getFilePos(f: File): int64 =