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-rw-r--r--py/mpconfig.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/py/mpconfig.h b/py/mpconfig.h
index fce9976928..fd82b079cc 100644
--- a/py/mpconfig.h
+++ b/py/mpconfig.h
@@ -110,10 +110,11 @@
// Be conservative and always clear to zero newly (re)allocated memory in the GC.
// This helps eliminate stray pointers that hold on to memory that's no longer
// used. It decreases performance due to unnecessary memory clearing.
+// A memory manager which always clears memory can set this to 0.
// TODO Do analysis to understand why some memory is not properly cleared and
// find a more efficient way to clear it.
#ifndef MICROPY_GC_CONSERVATIVE_CLEAR
-#define MICROPY_GC_CONSERVATIVE_CLEAR (1)
+#define MICROPY_GC_CONSERVATIVE_CLEAR (MICROPY_ENABLE_GC)
#endif
// Support automatic GC when reaching allocation threshold,