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Bugfix: Don't use a ruby string outside of the stack, GC can snag out from under us.

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(Thanks Michael!)

FossilOrigin-Name: bbcafda1bc42bf6deb5ac30acf620b0a3e020154e7d82f0140d2118ca29961fb
This commit is contained in:
Mahlon E. Smith 2021-07-13 23:58:16 +00:00
parent e9b476a4d7
commit fb6d4fba95
3 changed files with 8 additions and 20 deletions
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17
ext/mdbx_ext/database.c
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@ -439,7 +439,14 @@ rmdbx_set_subdb( VALUE self, VALUE name )
if ( db->txn )
rb_raise( rmdbx_eDatabaseError, "Unable to change collection: transaction open" );
db->subdb = NIL_P( name ) ? NULL : StringValueCStr( name );
xfree( db->subdb );
db->subdb = NULL;
if ( ! NIL_P(name) ) {
size_t len = RSTRING_LEN( name ) + 1;
db->subdb = malloc( len );
strlcpy( db->subdb, StringValuePtr(name), len );
}
/* Reset the db handle and issue a single transaction to reify
the collection.
@ -786,8 +793,6 @@ rmdbx_database_initialize( int argc, VALUE *argv, VALUE self )
db->settings.db_flags = db->settings.db_flags | MDBX_DB_ACCEDE;
db->settings.env_flags = db->settings.env_flags | MDBX_ACCEDE;
}
/* opt = rb_hash_delete( opts, ID2SYM( rb_intern("duplicate_keys") ) ); */
/* if ( RTEST(opt) ) db->settings.db_flags = db->settings.db_flags | MDBX_DUPSORT; */
opt = rb_hash_delete( opts, ID2SYM( rb_intern("exclusive") ) );
if ( RTEST(opt) ) db->settings.env_flags = db->settings.env_flags | MDBX_EXCLUSIVE;
opt = rb_hash_delete( opts, ID2SYM( rb_intern("lifo_reclaim") ) );
@ -815,12 +820,6 @@ rmdbx_database_initialize( int argc, VALUE *argv, VALUE self )
opt = rb_hash_delete( opts, ID2SYM( rb_intern("writemap") ) );
if ( RTEST(opt) ) db->settings.env_flags = db->settings.env_flags | MDBX_WRITEMAP;
/* Bail early on incompatible options. FIXME: I don't think this is true. */
/* if ( db->settings.max_collections > 0 && */
/* rmdbx_flag_enabled( db->settings.db_flags, MDBX_DUPSORT ) ) { */
/* rb_raise( rb_eArgError, "Collections and multiple values per key are mutually exclusive options." ); */
/* } */
if ( rb_hash_size_num(opts) > 0 ) {
rb_raise( rb_eArgError, "Unknown option(s): %"PRIsVALUE, opts );
}