7 ms·

> These days, almost every C++ compiler uses the Itanium C++ ABI’s name mangling rules. The notable exception is MSVC, which uses a completely different format.

> These days, almost every C++ compiler uses the Itanium C++ ABI’s name mangling rules. The notable exception is MSVC, which uses a completely different format. You stay classy, Microsoft. > Its not just the grammar that’s huge, the symbols themselves are too. Here is a pretty big mangled C++ symbol from SpiderMonkey [...] That’s 355 bytes! Here's a >4kB symbol I encountered while liberating some ebooks from an abandoned DRM app: tetraphilia::transient_ptrs<tetraphilia::imaging_model::PixelProducer<T3AppTraits> >::ptr_type tetraphilia::imaging_model::MakeIdealPixelProducer<tetraphilia::imaging_model::XWalkerCluster<tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalkerList3<tetraphilia::imaging_model::const_UnifiedGraphicXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits>, 0ul, 0, 1ul, 0ul, 0, 0ul, 0ul, 0, 0ul, 1ul>, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::const_IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::OneXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::OneXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 0ul> > > >, tetraphilia::TypeList<tetraphilia::imaging_model::XWalkerCluster<tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalkerList3<tetraphilia::imaging_model::const_UnifiedGraphicXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits>, 0ul, 0, 1ul, 0ul, 0, 0ul, 0ul, 0, 0ul, 0ul>, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::const_IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::OneXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::OneXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 0ul> > > >, tetraphilia::TypeList<tetraphilia::imaging_model::XWalkerCluster<tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalkerList3<tetraphilia::imaging_model::const_UnifiedGraphicXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits>, 0ul, 0, 1ul, 0ul, 0, 0ul, 0ul, 0, 0ul, 1ul>, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::const_IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::const_IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> > > >, tetraphilia::Terminal> >, T3AppTraits, tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits>, tetraphilia::imaging_model::SeparableOperation<tetraphilia::imaging_model::ClipOperation<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> > > >(tetraphilia::ArgType<tetraphilia::TypeList<tetraphilia::imaging_model::XWalkerCluster<tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalkerList3<tetraphilia::imaging_model::const_UnifiedGraphicXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits>, 0ul, 0, 1ul, 0ul, 0, 0ul, 0ul, 0, 0ul, 1ul>, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::const_IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::OneXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::OneXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 0ul> > > >, tetraphilia::TypeList<tetraphilia::imaging_model::XWalkerCluster<tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalkerList3<tetraphilia::imaging_model::const_UnifiedGraphicXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits>, 0ul, 0, 1ul, 0ul, 0, 0ul, 0ul, 0, 0ul, 0ul>, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::const_IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::OneXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::OneXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 0ul> > > >, tetraphilia::TypeList<tetraphilia::imaging_model::XWalkerCluster<tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalkerList3<tetraphilia::imaging_model::const_UnifiedGraphicXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits>, 0ul, 0, 1ul, 0ul, 0, 0ul, 0ul, 0, 0ul, 1ul>, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::const_IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> >, tetraphilia::imaging_model::GraphicXWalker<tetraphilia::imaging_model::const_IgnoredRasterXWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 0ul, 0, 1ul, 1ul>, tetraphilia::imaging_model::const_SpecializedRasterXWalker<unsigned char, 2ul, -1, 3ul, 3ul> > > >, tetraphilia::Terminal> > > >, T3AppTraits::context_type&, tetraphilia::imaging_model::Constraints<T3AppTraits> const&, tetraphilia::imaging_model::SeparableOperation<tetraphilia::imaging_model::ClipOperation<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> > >, tetraphilia::imaging_model::const_GraphicYWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> > const*, tetraphilia::imaging_model::const_GraphicYWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> > const*, tetraphilia::imaging_model::const_GraphicYWalker<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> > const*, tetraphilia::imaging_model::SegmentFactory<tetraphilia::imaging_model::ByteSignalTraits<T3AppTraits> >*)

hermitdev 10y ago
If you want some huge symbols, introduce Boost Lambda into a project. Doing a single for_each with a Boost Lambda can introduce symbols of several 100k.
- jjoonathan 10y ago
  Nice! I'm not near a C++ environment atm, but I promise an upvote to anyone who digs up one of these beasts for us to gawk at!
  - jcranmer 10y ago
    This is one that I found from running nm on a binary: _ZN5boost6detail7variant15visitation_implIN4mpl_4int_ILi40EEENS1_20visitation_impl_stepINS_3mpl6v_iterINS7_6v_itemI25SelectedEntityChangedDataNS9_IN11InputAction17ServerCommandDataENS9_INSB_18SetupBlueprintDataENS9_INSB_13BuildRailDataENS9_I2IDI20CustomInputPrototypetENS9_IN10ActionData22TrainWaitConditionDataENS9_INSI_18TrainWaitConditionENS9_INSB_22BuildTerrainParametersENS9_I27DeciderCombinatorParametersNS9_I30ArithmeticCombinatorParametersNS9_INSB_18PlayerJoinGameDataENS9_INSB_7CrcDataENS9_INSB_20SetBlueprintIconDataENS9_I20AbilitySpecificationNS9_INSB_17TakeEquipmentDataENS9_INSB_18PlaceEquipmentDataENS9_I6VectorNS9_IdNS9_ISF_I9ItemGrouphENS9_INSB_15MarketOfferDataENS9_ISsNS9_INSI_33BehaviorModeOfOperationParametersENS9_INSI_17TrainScheduleDataENS9_INSB_18GuiTextChangedDataENS9_INSB_14GuiChangedDataENS9_INSB_12GuiClickDataENS9_INSB_20SelectItemParametersENS9_INSI_24LogisticFilterSignalDataENS9_INSI_22LogisticFilterItemDataENS9_ISF_I19TechnologyPrototypetENS9_INSI_10SignalDataENS9_INSI_26CircuitConditionParametersENS9_INSB_19SetFilterParametersENS9_INSB_19BuildItemParametersENS9_INSB_16CancelCraftOrderENS9_INSB_9CraftDataENS9_I13ShootingStateNS9_IhNS9_ItNS9_IjNS9_IbNS9_ISF_I13ItemPrototypetENS9_ISF_I15RecipePrototypetENS9_I28ItemStackTargetSpecificationNS9_I11RidingStateNS9_I9DirectionNS9_INSB_14SelectAreaDataENS9_I12RealPositionNS7_7vector0INS3_2naEEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELl40EEENS8_IS32_Ll48EEEEENS1_14invoke_visitorINS1_11get_visitorIKS10_EEEEPKvNS_7variantINS1_13over_sequenceINS7_8vector48IS1N_S1M_S1L_S1K_S1J_S1I_S1G_bjthS1E_S1D_S1C_S1B_S1A_S19_S18_S17_S15_S14_S13_S12_S11_S10_SZ_SY_SsSX_SW_dSU_ST_SS_SR_SQ_SP_SO_SN_SM_SL_SK_SJ_SH_SE_SD_SC_SA_EEEEJEE18has_fallback_type_EEENT1_11result_typeEiiRS3K_T2_NS3_5bool_ILb0EEET3_PT_PT0_ The c++filt output is 13,776 characters, so I can't easily copy it here.

hermitdev 10y ago

If you want some huge symbols, introduce Boost Lambda into a project. Doing a single for_each with a Boost Lambda can introduce symbols of several 100k.

jjoonathan 10y ago
Nice! I'm not near a C++ environment atm, but I promise an upvote to anyone who digs up one of these beasts for us to gawk at!
- jcranmer 10y ago
  This is one that I found from running nm on a binary: _ZN5boost6detail7variant15visitation_implIN4mpl_4int_ILi40EEENS1_20visitation_impl_stepINS_3mpl6v_iterINS7_6v_itemI25SelectedEntityChangedDataNS9_IN11InputAction17ServerCommandDataENS9_INSB_18SetupBlueprintDataENS9_INSB_13BuildRailDataENS9_I2IDI20CustomInputPrototypetENS9_IN10ActionData22TrainWaitConditionDataENS9_INSI_18TrainWaitConditionENS9_INSB_22BuildTerrainParametersENS9_I27DeciderCombinatorParametersNS9_I30ArithmeticCombinatorParametersNS9_INSB_18PlayerJoinGameDataENS9_INSB_7CrcDataENS9_INSB_20SetBlueprintIconDataENS9_I20AbilitySpecificationNS9_INSB_17TakeEquipmentDataENS9_INSB_18PlaceEquipmentDataENS9_I6VectorNS9_IdNS9_ISF_I9ItemGrouphENS9_INSB_15MarketOfferDataENS9_ISsNS9_INSI_33BehaviorModeOfOperationParametersENS9_INSI_17TrainScheduleDataENS9_INSB_18GuiTextChangedDataENS9_INSB_14GuiChangedDataENS9_INSB_12GuiClickDataENS9_INSB_20SelectItemParametersENS9_INSI_24LogisticFilterSignalDataENS9_INSI_22LogisticFilterItemDataENS9_ISF_I19TechnologyPrototypetENS9_INSI_10SignalDataENS9_INSI_26CircuitConditionParametersENS9_INSB_19SetFilterParametersENS9_INSB_19BuildItemParametersENS9_INSB_16CancelCraftOrderENS9_INSB_9CraftDataENS9_I13ShootingStateNS9_IhNS9_ItNS9_IjNS9_IbNS9_ISF_I13ItemPrototypetENS9_ISF_I15RecipePrototypetENS9_I28ItemStackTargetSpecificationNS9_I11RidingStateNS9_I9DirectionNS9_INSB_14SelectAreaDataENS9_I12RealPositionNS7_7vector0INS3_2naEEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELi0EEELl40EEENS8_IS32_Ll48EEEEENS1_14invoke_visitorINS1_11get_visitorIKS10_EEEEPKvNS_7variantINS1_13over_sequenceINS7_8vector48IS1N_S1M_S1L_S1K_S1J_S1I_S1G_bjthS1E_S1D_S1C_S1B_S1A_S19_S18_S17_S15_S14_S13_S12_S11_S10_SZ_SY_SsSX_SW_dSU_ST_SS_SR_SQ_SP_SO_SN_SM_SL_SK_SJ_SH_SE_SD_SC_SA_EEEEJEE18has_fallback_type_EEENT1_11result_typeEiiRS3K_T2_NS3_5bool_ILb0EEET3_PT_PT0_ The c++filt output is 13,776 characters, so I can't easily copy it here.