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Two hash_collections can only match if they have at least one matching hash.

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This commit is contained in:
Aaron Giles 2011-03-29 16:38:53 +00:00
parent 17e077da3a
commit 340fda9b68
1 changed files with 8 additions and 3 deletions
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9
src/emu/hash.c
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@ -441,15 +441,20 @@ hash_collection &hash_collection::operator=(const hash_collection &src)
bool hash_collection::operator==(const hash_collection &rhs) const bool hash_collection::operator==(const hash_collection &rhs) const
{ {
// look for a mismatch in any hash; do not fail if one is missing // look for a mismatch in any hash; do not fail if one is missing
int matches = 0;
for (hash_base *hash = m_hashlist.first(); hash != NULL; hash = hash->next()) for (hash_base *hash = m_hashlist.first(); hash != NULL; hash = hash->next())
{ {
hash_base *rhs_hash = rhs.hash(hash->id()); hash_base *rhs_hash = rhs.hash(hash->id());
if (hash != NULL && rhs_hash != NULL && *hash != *rhs_hash) if (hash != NULL)
{
if (rhs_hash != NULL && *hash != *rhs_hash)
return false; return false;
matches++;
}
} }
// if all shared hashes match, return true // if all shared hashes match, return true
return true; return (matches > 0);
} }