fixes #10271 [backport]

nim-lang · Jan 13, 2019 · 451377f · 451377f
1 parent 7f0559b
commit 451377f
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/lib/system/gc_ms.nim b/lib/system/gc_ms.nim
@@ -485,8 +485,9 @@ proc collectCTBody(gch: var GcHeap) =
   sysAssert(allocInv(gch.region), "collectCT: end")
 
 proc collectCT(gch: var GcHeap; size: int) =
+  let fmem = getFreeMem(gch.region)
   if (getOccupiedMem(gch.region) >= gch.cycleThreshold or
-      size > getFreeMem(gch.region)) and gch.recGcLock == 0:
+      size > fmem and fmem > InitialThreshold) and gch.recGcLock == 0:
     collectCTBody(gch)
 
 when not defined(useNimRtl):