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-rw-r--r--lib/system/sysio.nim7
1 files changed, 3 insertions, 4 deletions
diff --git a/lib/system/sysio.nim b/lib/system/sysio.nim
index df13ab628..61835e0f7 100644
--- a/lib/system/sysio.nim
+++ b/lib/system/sysio.nim
@@ -145,10 +145,9 @@ proc readLine(f: File, line: var TaintedString): bool =
   var pos = 0
 
   # Use the currently reserved space for a first try
-  var sp = line.string.len
-  if sp == 0:
-    sp = 80
-    line.string.setLen(sp)
+  var sp = max(line.string.len, 80)
+  line.string.setLen(sp)
+
   while true:
     # memset to \L so that we can tell how far fgets wrote, even on EOF, where
     # fgets doesn't append an \L