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fix(ruby): Fix crash when calculating Message hash values on 64-bit Windows #8565

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merged 5 commits into from May 6, 2021
Merged

fix(ruby): Fix crash when calculating Message hash values on 64-bit Windows #8565

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3e92117
fix(ruby): Fix crash when calculating Message hash values on 64-bit W…
dazuma May 5, 2021
9f72824
Better mapping for values outside the fixnum range
dazuma May 5, 2021
4257f55
Simpler downcasting of hash values
dazuma May 5, 2021
ee53fe8
Fix precedence
dazuma May 6, 2021
c9fb5e0
Fix bundle on Ruby 2.4
dazuma May 6, 2021
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2 changes: 2 additions & 0 deletions ruby/Gemfile
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@@ -1,3 +1,5 @@
source 'https://rubygems.org'

gemspec

gem "irb", "~> 1.1", "< 1.2.0" if RUBY_VERSION < "2.5"
5 changes: 4 additions & 1 deletion ruby/ext/google/protobuf_c/message.c
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Expand Up @@ -734,7 +734,10 @@ uint64_t Message_Hash(const upb_msg* msg, const upb_msgdef* m, uint64_t seed) {
*/
static VALUE Message_hash(VALUE _self) {
Message* self = ruby_to_Message(_self);
return INT2FIX(Message_Hash(self->msg, self->msgdef, 0));
uint64_t hash_value = Message_Hash(self->msg, self->msgdef, 0);
// RUBY_FIXNUM_MAX should be one less than a power of 2.
assert((RUBY_FIXNUM_MAX & (RUBY_FIXNUM_MAX + 1)) == 0);
return INT2FIX(hash_value & RUBY_FIXNUM_MAX);
}

/*
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