https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79342
--- Comment #14 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> --- Author: hjl Date: Mon Dec 17 13:49:16 2018 New Revision: 267202 URL: https://gcc.gnu.org/viewcvs?rev=267202&root=gcc&view=rev Log: DWARF: Don't expand hash table when no insertion is needed dwarf2out_finish performs: 1. save_macinfo_strings 2. hash table traverse of index_string 3. output_macinfo -> output_macinfo_op 4. output_indirect_strings -> hash table traverse of output_index_string find_slot_with_hash has if (insert == INSERT && m_size * 3 <= m_n_elements * 4) expand (); which may expand hash table even if no insertion is neeed and change hash table traverse order. When output_macinfo_op is called, all index strings have been added to hash table by save_macinfo_strings and we shouldn't expand index string hash table. Otherwise find_slot_with_hash will expand hash table when hash table has the right size and hash table traverse of output_index_string will have a different traverse order from index_string. PR debug/79342 * dwarf2out.c (find_AT_string_in_table): Add insert argument defaulting to INSERT and replace INSERT. (find_AT_string): Likewise. (output_macinfo_op): Pass NO_INSERT to find_AT_string. Modified: trunk/gcc/ChangeLog trunk/gcc/dwarf2out.c
