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Allow overriding USE_SECONDARY_MAP #12933

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Allow overriding USE_SECONDARY_MAP #12933

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2 changes: 2 additions & 0 deletions ruby/ext/google/protobuf_c/protobuf.c
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Original file line number Diff line number Diff line change
Expand Up @@ -270,11 +270,13 @@ void Arena_register(VALUE module) {
// on which pointers are 64 bits but longs are 32 bits. In this case, we enable
// the secondary Hash to hold the keys and prevent them from being collected.

#ifndef USE_SECONDARY_MAP
#if RUBY_API_VERSION_CODE >= 20700 && SIZEOF_LONG >= SIZEOF_VALUE
#define USE_SECONDARY_MAP 0
#else
#define USE_SECONDARY_MAP 1
#endif
#endif // USE_SECONDARY_MAP

#if USE_SECONDARY_MAP

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