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Segfault with increased recursion_limit #74711

Closed
alecmocatta opened this issue Jul 24, 2020 · 11 comments · Fixed by #74822
Closed

Segfault with increased recursion_limit #74711

alecmocatta opened this issue Jul 24, 2020 · 11 comments · Fixed by #74822
Labels
C-bug Category: This is a bug. I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. regression-from-stable-to-stable Performance or correctness regression from one stable version to another. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue.

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@alecmocatta
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I would expect rustc to error with "overflow evaluating the requirement", or compile without issue. Instead it segfaults.

#![recursion_limit = "2560"]

trait Foo {
    type Item;
}

trait Bar {}

trait Baz {}

impl<T: Bar> Foo for T {
    type Item = ();
}

impl<'a, T> Foo for &'a Vec<T>
where
    Self::Item: Baz,
{
    type Item = &'a T;
}

(Playground)

Errors:

   Compiling playground v0.0.1 (/playground)
error: could not compile `playground`.

Caused by:
  process didn't exit successfully: `rustc --crate-name playground --edition=2018 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C codegen-units=1 -C debuginfo=2 -C metadata=825c57de1a7e1cd8 -C extra-filename=-825c57de1a7e1cd8 --out-dir /playground/target/debug/deps -L dependency=/playground/target/debug/deps --extern addr2line=/playground/target/debug/deps/libaddr2line-ec47674828eca12b.rmeta --extern adler=/playground/target/debug/deps/libadler-533a168f0267d82b.rmeta --extern adler32=/playground/target/debug/deps/libadler32-a57fc6103380480f.rmeta --extern aho_corasick=/playground/target/debug/deps/libaho_corasick-d3c08a36ba4ff1cc.rmeta --extern ansi_term_0_11_0=/playground/target/debug/deps/libansi_term-622e724c043a12dd.rmeta --extern ansi_term=/playground/target/debug/deps/libansi_term-cd57b7dbaab31588.rmeta --extern approx=/playground/target/debug/deps/libapprox-71fb772135ec98e6.rmeta --extern arc_swap=/playground/target/debug/deps/libarc_swap-37175350fe0b5bb7.rmeta --extern arrayvec=/playground/target/debug/deps/libarrayvec-ea5651e2e5af95dc.rmeta --extern async_trait=/playground/target/debug/deps/libasync_trait-94fc3aefa4e430a8.so --extern atty=/playground/target/debug/deps/libatty-8c30fb7e401ecb4d.rmeta --extern autocfg=/playground/target/debug/deps/libautocfg-d9ae7cc76d4e41c2.rmeta --extern backtrace=/playground/target/debug/deps/libbacktrace-6b19ab37cc5042a0.rmeta --extern backtrace_sys=/playground/target/debug/deps/libbacktrace_sys-19d2ca13bd576709.rmeta --extern base64=/playground/target/debug/deps/libbase64-1f5408f90768a62f.rmeta --extern bit_set=/playground/target/debug/deps/libbit_set-46de71bc0b3bff7a.rmeta --extern bit_vec=/playground/target/debug/deps/libbit_vec-958ae84d26de5993.rmeta --extern bitflags=/playground/target/debug/deps/libbitflags-e41dcca6c54d37dc.rmeta --extern block_buffer=/playground/target/debug/deps/libblock_buffer-159436dd50239d7e.rmeta --extern bstr=/playground/target/debug/deps/libbstr-f2afffa4213dd343.rmeta --extern bytemuck=/playground/target/debug/deps/libbytemuck-2521a0d6fd97cc0f.rmeta --extern byteorder=/playground/target/debug/deps/libbyteorder-d4f340eb1bea9735.rmeta --extern bytes=/playground/target/debug/deps/libbytes-d05b7a0c3022d03a.rmeta --extern cc=/playground/target/debug/deps/libcc-9b5830d7423b21e9.rmeta --extern cfg_if=/playground/target/debug/deps/libcfg_if-70dbac066dd7629a.rmeta --extern chrono=/playground/target/debug/deps/libchrono-9597997d7ac46eb2.rmeta --extern clap=/playground/target/debug/deps/libclap-6270da1f28fd387e.rmeta --extern color_quant=/playground/target/debug/deps/libcolor_quant-17d029dba5a44db5.rmeta --extern cpuid_bool=/playground/target/debug/deps/libcpuid_bool-f89e2f38b01892fe.rmeta --extern crc32fast=/playground/target/debug/deps/libcrc32fast-ae7dedaca97c2d88.rmeta --extern crossbeam=/playground/target/debug/deps/libcrossbeam-9c5f7df0eeeefbe0.rmeta --extern crossbeam_channel=/playground/target/debug/deps/libcrossbeam_channel-8b124b0abb2c2542.rmeta --extern crossbeam_deque=/playground/target/debug/deps/libcrossbeam_deque-0c37c154e15d2d79.rmeta --extern crossbeam_epoch=/playground/target/debug/deps/libcrossbeam_epoch-7f83837bbcfb633d.rmeta --extern crossbeam_queue=/playground/target/debug/deps/libcrossbeam_queue-506be1a704a23497.rmeta --extern crossbeam_utils=/playground/target/debug/deps/libcrossbeam_utils-5a54e57764ff3ace.rmeta --extern crypto_mac=/playground/target/debug/deps/libcrypto_mac-8c459000ae881d59.rmeta --extern csv=/playground/target/debug/deps/libcsv-77ccf902bb51b393.rmeta --extern csv_core=/playground/target/debug/deps/libcsv_core-11cde19ed38c8e7b.rmeta --extern data_encoding=/playground/target/debug/deps/libdata_encoding-49d921a4b78211ca.rmeta --extern deflate=/playground/target/debug/deps/libdeflate-65dbc6c6a709e914.rmeta --extern digest=/playground/target/debug/deps/libdigest-998639ecb953355e.rmeta --extern dtoa=/playground/target/debug/deps/libdtoa-fc2af20d0dab7ad3.rmeta --extern either=/playground/target/debug/deps/libeither-abbd5a2390171753.rmeta --extern encoding_rs=/playground/target/debug/deps/libencoding_rs-4a47ef4d88567ee4.rmeta --extern env_logger=/playground/target/debug/deps/libenv_logger-177d98b991ed4d00.rmeta --extern error_chain=/playground/target/debug/deps/liberror_chain-062bb4ac5a2fd8b5.rmeta --extern failure=/playground/target/debug/deps/libfailure-7184aafcbcae624b.rmeta --extern failure_derive=/playground/target/debug/deps/libfailure_derive-c8d6872858099031.so --extern fallible_iterator=/playground/target/debug/deps/libfallible_iterator-21e2071af8b2b97a.rmeta --extern fallible_streaming_iterator=/playground/target/debug/deps/libfallible_streaming_iterator-70272656ea725f73.rmeta --extern filetime=/playground/target/debug/deps/libfiletime-0b33fddceb95f95a.rmeta --extern fixedbitset=/playground/target/debug/deps/libfixedbitset-f6860dc731db70be.rmeta --extern flate2=/playground/target/debug/deps/libflate2-07380c170211411d.rmeta --extern fnv=/playground/target/debug/deps/libfnv-85686a93e0df85a4.rmeta --extern foreign_types=/playground/target/debug/deps/libforeign_types-08f3ca372fb69d58.rmeta --extern foreign_types_shared=/playground/target/debug/deps/libforeign_types_shared-129b074ca41b8a93.rmeta --extern futf=/playground/target/debug/deps/libfutf-415d06e4d22bb666.rmeta --extern futures=/playground/target/debug/deps/libfutures-4b432f0b0a7601d2.rmeta --extern futures_channel=/playground/target/debug/deps/libfutures_channel-9e1fe998d056b0ed.rmeta --extern futures_core=/playground/target/debug/deps/libfutures_core-a6776008893b95f1.rmeta --extern futures_executor=/playground/target/debug/deps/libfutures_executor-83a293bd4ce9cf2f.rmeta --extern futures_io=/playground/target/debug/deps/libfutures_io-c017c3bbafcfff8d.rmeta --extern futures_macro=/playground/target/debug/deps/libfutures_macro-6d88a8c7ca16f988.so --extern futures_sink=/playground/target/debug/deps/libfutures_sink-0a2fd4fa2d05101b.rmeta --extern futures_task=/playground/target/debug/deps/libfutures_task-f08ab9102eed15d2.rmeta --extern futures_util=/playground/target/debug/deps/libfutures_util-0b673f61078f11c8.rmeta --extern generic_array_0_13_2=/playground/target/debug/deps/libgeneric_array-1c0c2ddb01d2fd66.rmeta --extern generic_array=/playground/target/debug/deps/libgeneric_array-adcc97fcac638cf7.rmeta --extern getrandom=/playground/target/debug/deps/libgetrandom-687ce03fd65e5054.rmeta --extern gif=/playground/target/debug/deps/libgif-a2eecb505eec156c.rmeta --extern gimli=/playground/target/debug/deps/libgimli-398913cfad851577.rmeta --extern glob=/playground/target/debug/deps/libglob-b4b470452a91634a.rmeta --extern h2=/playground/target/debug/deps/libh2-f770d5efdd611b09.rmeta --extern hmac=/playground/target/debug/deps/libhmac-718804ec0957ddb6.rmeta --extern html5ever=/playground/target/debug/deps/libhtml5ever-e2e4cdd69ede867c.rmeta --extern http=/playground/target/debug/deps/libhttp-ccbc0531c1f3838d.rmeta --extern http_body=/playground/target/debug/deps/libhttp_body-efbb393f0634e188.rmeta --extern httparse=/playground/target/debug/deps/libhttparse-8a8f1fca942afdb2.rmeta --extern humantime=/playground/target/debug/deps/libhumantime-7f8d16e93f97f0a5.rmeta --extern hyper=/playground/target/debug/deps/libhyper-30dc26299ba5ba51.rmeta --extern hyper_tls=/playground/target/debug/deps/libhyper_tls-f6009ee771ed941d.rmeta --extern idna=/playground/target/debug/deps/libidna-6e191c7450f1abe0.rmeta --extern image=/playground/target/debug/deps/libimage-7979848fea4d6b67.rmeta --extern indexmap=/playground/target/debug/deps/libindexmap-a7651a98a07d2998.rmeta --extern instant=/playground/target/debug/deps/libinstant-b4aea122da68db28.rmeta --extern iovec=/playground/target/debug/deps/libiovec-8767f81cd1d34bfc.rmeta --extern itertools=/playground/target/debug/deps/libitertools-8079fa918d94c7c0.rmeta --extern itoa=/playground/target/debug/deps/libitoa-5b51356992133576.rmeta --extern jpeg_decoder=/playground/target/debug/deps/libjpeg_decoder-7a19c294ff24d27e.rmeta --extern kernel32=/playground/target/debug/deps/libkernel32-e436a405c9479643.rmeta --extern lazy_static=/playground/target/debug/deps/liblazy_static-2cf37aa6d4c0d270.rmeta --extern libc=/playground/target/debug/deps/liblibc-8383a363cad4afd8.rmeta --extern libm=/playground/target/debug/deps/liblibm-466c18b3ca4a594e.rmeta --extern libsqlite3_sys=/playground/target/debug/deps/liblibsqlite3_sys-33ce70c155215bba.rmeta --extern linked_hash_map=/playground/target/debug/deps/liblinked_hash_map-e9a514ab0fd04f12.rmeta --extern lock_api_0_3_4=/playground/target/debug/deps/liblock_api-8b4a624199ae684b.rmeta --extern lock_api=/playground/target/debug/deps/liblock_api-4b319b248f35335a.rmeta --extern log=/playground/target/debug/deps/liblog-b89376b616c8f8a4.rmeta --extern log_mdc=/playground/target/debug/deps/liblog_mdc-d8cca5d31c932456.rmeta --extern log4rs=/playground/target/debug/deps/liblog4rs-271b6d92e5841ce7.rmeta --extern lru_cache=/playground/target/debug/deps/liblru_cache-a7a3cd71d9a9788e.rmeta --extern lzw=/playground/target/debug/deps/liblzw-09c6b6a1a9798444.rmeta --extern mac=/playground/target/debug/deps/libmac-66039fd2c9797c4f.rmeta --extern markup5ever=/playground/target/debug/deps/libmarkup5ever-b61bca94480a40b5.rmeta --extern markup5ever_rcdom=/playground/target/debug/deps/libmarkup5ever_rcdom-055b80c158caa7a2.rmeta --extern matches=/playground/target/debug/deps/libmatches-368517157e40f79c.rmeta --extern matrixmultiply=/playground/target/debug/deps/libmatrixmultiply-4b001418bae1d267.rmeta --extern maybe_uninit=/playground/target/debug/deps/libmaybe_uninit-5d12dd309ce3af7e.rmeta --extern md5=/playground/target/debug/deps/libmd5-b5e48ca589fc1f2f.rmeta --extern memchr=/playground/target/debug/deps/libmemchr-949533ae8e766276.rmeta --extern memmap=/playground/target/debug/deps/libmemmap-c84141132f4a6067.rmeta --extern memoffset=/playground/target/debug/deps/libmemoffset-45781c7bd0937cdd.rmeta --extern mime=/playground/target/debug/deps/libmime-6490e6db039e42bc.rmeta --extern mime_guess=/playground/target/debug/deps/libmime_guess-0256541f619c4343.rmeta --extern miniz_oxide_0_3_7=/playground/target/debug/deps/libminiz_oxide-7a54530d5798ed4a.rmeta --extern miniz_oxide=/playground/target/debug/deps/libminiz_oxide-228f10c93bb3a992.rmeta --extern mio_0_6_22=/playground/target/debug/deps/libmio-6a1e650be50b10a3.rmeta --extern mio=/playground/target/debug/deps/libmio-bba211b9d357037f.rmeta --extern mio_uds=/playground/target/debug/deps/libmio_uds-e7297be0c65196a8.rmeta --extern nalgebra=/playground/target/debug/deps/libnalgebra-8f5ea98e0e302e2c.rmeta --extern native_tls=/playground/target/debug/deps/libnative_tls-c49929b46bae8e1d.rmeta --extern ndarray=/playground/target/debug/deps/libndarray-cfe97877bba9358a.rmeta --extern net2=/playground/target/debug/deps/libnet2-508d037c66b31035.rmeta --extern debug_unreachable=/playground/target/debug/deps/libdebug_unreachable-590ba078be7c6cdd.rmeta --extern nodrop=/playground/target/debug/deps/libnodrop-1c1eeb1fc35d352d.rmeta --extern num=/playground/target/debug/deps/libnum-fe648f4babce3e0c.rmeta --extern num_bigint=/playground/target/debug/deps/libnum_bigint-01f82e3fc83d1927.rmeta --extern num_complex_0_2_4=/playground/target/debug/deps/libnum_complex-5f2bdc51a6a61a4c.rmeta --extern num_complex=/playground/target/debug/deps/libnum_complex-62a70d68b3d61dbe.rmeta --extern num_integer=/playground/target/debug/deps/libnum_integer-1d0eb6fa36172b46.rmeta --extern num_iter=/playground/target/debug/deps/libnum_iter-ee88729ebfa416be.rmeta --extern num_rational_0_2_4=/playground/target/debug/deps/libnum_rational-96bbbccd3c3d5b5e.rmeta --extern num_rational=/playground/target/debug/deps/libnum_rational-4ef05f4e98559366.rmeta --extern num_traits=/playground/target/debug/deps/libnum_traits-2c5cf12c8f6a5636.rmeta --extern num_cpus=/playground/target/debug/deps/libnum_cpus-dcdde136898707bb.rmeta --extern object=/playground/target/debug/deps/libobject-7d619d966c19e70c.rmeta --extern once_cell=/playground/target/debug/deps/libonce_cell-1b1fbb4e963afc90.rmeta --extern opaque_debug=/playground/target/debug/deps/libopaque_debug-bb701c3bfff27965.rmeta --extern openssl=/playground/target/debug/deps/libopenssl-c899db4e7aa40194.rmeta --extern openssl_probe=/playground/target/debug/deps/libopenssl_probe-1ac429f51e3f1516.rmeta --extern openssl_sys=/playground/target/debug/deps/libopenssl_sys-45e01f61db4986e9.rmeta --extern ordered_float=/playground/target/debug/deps/libordered_float-0b5ce9e2f1b28cac.rmeta --extern parking_lot_0_10_2=/playground/target/debug/deps/libparking_lot-0dff51e4475ef4a4.rmeta --extern parking_lot=/playground/target/debug/deps/libparking_lot-9532664b5d4645f6.rmeta --extern parking_lot_core_0_7_2=/playground/target/debug/deps/libparking_lot_core-fb33f2edfc936953.rmeta --extern parking_lot_core=/playground/target/debug/deps/libparking_lot_core-2f0d1cd96be9679e.rmeta --extern paste=/playground/target/debug/deps/libpaste-318ed5792327c3c5.rmeta --extern paste_impl=/playground/target/debug/deps/libpaste_impl-b23510a70ac33d7d.so --extern percent_encoding=/playground/target/debug/deps/libpercent_encoding-9ab61319e4ed5eb3.rmeta --extern petgraph=/playground/target/debug/deps/libpetgraph-73956abc50c85c78.rmeta --extern phf=/playground/target/debug/deps/libphf-619f8cb4cdb9383e.rmeta --extern phf_codegen=/playground/target/debug/deps/libphf_codegen-18ac2e716c91bc2d.rmeta --extern phf_generator=/playground/target/debug/deps/libphf_generator-61173137364bff56.rmeta --extern phf_shared=/playground/target/debug/deps/libphf_shared-af10d0f13f860e86.rmeta --extern pin_project=/playground/target/debug/deps/libpin_project-b730f5c36b695278.rmeta --extern pin_project_internal=/playground/target/debug/deps/libpin_project_internal-3be1346b9a1dc6e0.so --extern pin_project_lite=/playground/target/debug/deps/libpin_project_lite-4ad4f2e59959fe6f.rmeta --extern pin_utils=/playground/target/debug/deps/libpin_utils-54f98b026e031253.rmeta --extern pkg_config=/playground/target/debug/deps/libpkg_config-f0983e74158957a0.rmeta --extern png=/playground/target/debug/deps/libpng-39e582e5ac53fe94.rmeta --extern postgres=/playground/target/debug/deps/libpostgres-fa78dc6d76d9fd53.rmeta --extern postgres_protocol=/playground/target/debug/deps/libpostgres_protocol-8970a5b8ba0337f1.rmeta --extern postgres_types=/playground/target/debug/deps/libpostgres_types-658489f81bd011b3.rmeta --extern ppv_lite86=/playground/target/debug/deps/libppv_lite86-a24cfd6f6fdce35d.rmeta --extern precomputed_hash=/playground/target/debug/deps/libprecomputed_hash-9677c948487dd63e.rmeta --extern proc_macro_hack=/playground/target/debug/deps/libproc_macro_hack-4060f636760e02d0.so --extern proc_macro_nested=/playground/target/debug/deps/libproc_macro_nested-d32195041cf352cd.rmeta --extern proc_macro2=/playground/target/debug/deps/libproc_macro2-4cf679aeaafbebaa.rmeta --extern quick_error=/playground/target/debug/deps/libquick_error-150351b4fe7b2f11.rmeta --extern quote=/playground/target/debug/deps/libquote-05c4e3c3531bc10b.rmeta --extern rand=/playground/target/debug/deps/librand-720cd340eff14e88.rmeta --extern rand_chacha=/playground/target/debug/deps/librand_chacha-3b1a6065a36d215f.rmeta --extern rand_core=/playground/target/debug/deps/librand_core-9a28fd566b58282f.rmeta --extern rand_distr=/playground/target/debug/deps/librand_distr-85955fb7c1072e2b.rmeta --extern rand_hc=/playground/target/debug/deps/librand_hc-43740102e4b27ff4.rmeta --extern rand_pcg=/playground/target/debug/deps/librand_pcg-cdde1e0279899028.rmeta --extern rand_xorshift=/playground/target/debug/deps/librand_xorshift-5c5222ff28de3bd4.rmeta --extern rawpointer=/playground/target/debug/deps/librawpointer-1bab61e40165c093.rmeta --extern rayon=/playground/target/debug/deps/librayon-e1a5264775667c6f.rmeta --extern rayon_core=/playground/target/debug/deps/librayon_core-047f2b1d57ec11be.rmeta --extern regex=/playground/target/debug/deps/libregex-eb43b2a23096dc4d.rmeta --extern regex_automata=/playground/target/debug/deps/libregex_automata-f522b8ae12676b9f.rmeta --extern regex_syntax=/playground/target/debug/deps/libregex_syntax-84ba1f16e1550fb5.rmeta --extern remove_dir_all=/playground/target/debug/deps/libremove_dir_all-576bf33be4c7c60a.rmeta --extern reqwest=/playground/target/debug/deps/libreqwest-fbb8378c23f103e7.rmeta --extern ring=/playground/target/debug/deps/libring-728045ac3944de0e.rmeta --extern rusqlite=/playground/target/debug/deps/librusqlite-674654bb6941e8e9.rmeta --extern rustc_demangle=/playground/target/debug/deps/librustc_demangle-7e2dd4f4b5b030ff.rmeta --extern rustc_serialize=/playground/target/debug/deps/librustc_serialize-4bc070bac364a5f4.rmeta --extern rustc_version=/playground/target/debug/deps/librustc_version-fed6b3cde4e44b31.rmeta --extern ryu=/playground/target/debug/deps/libryu-f87f1f33923c8120.rmeta --extern same_file=/playground/target/debug/deps/libsame_file-60637c36b43cf5c7.rmeta --extern scoped_threadpool=/playground/target/debug/deps/libscoped_threadpool-573434a5f80aff09.rmeta --extern scopeguard=/playground/target/debug/deps/libscopeguard-9224d59703bffb15.rmeta --extern select=/playground/target/debug/deps/libselect-a29b8cd35c710776.rmeta --extern semver_0_9_0=/playground/target/debug/deps/libsemver-72cfe4c74165f76d.rmeta --extern semver=/playground/target/debug/deps/libsemver-8727f1a0f1ede603.rmeta --extern semver_parser_0_7_0=/playground/target/debug/deps/libsemver_parser-9c0572345fff0b03.rmeta --extern semver_parser=/playground/target/debug/deps/libsemver_parser-b74ce6a80f522312.rmeta --extern serde=/playground/target/debug/deps/libserde-57bd5d23445083a6.rmeta --extern serde_value=/playground/target/debug/deps/libserde_value-e7bd6c3e0fda9c57.rmeta --extern serde_derive=/playground/target/debug/deps/libserde_derive-d5ffa6702bbad00c.so --extern serde_json=/playground/target/debug/deps/libserde_json-12c4a2c928929d70.rmeta --extern serde_urlencoded=/playground/target/debug/deps/libserde_urlencoded-e26554ac795d5fde.rmeta --extern serde_yaml=/playground/target/debug/deps/libserde_yaml-ebdfc443f1d13fe7.rmeta --extern sha2=/playground/target/debug/deps/libsha2-f34ca808f2753694.rmeta --extern simba=/playground/target/debug/deps/libsimba-77c3c2bb77dbd856.rmeta --extern siphasher=/playground/target/debug/deps/libsiphasher-76835abdbda9dc96.rmeta --extern slab=/playground/target/debug/deps/libslab-c0fb3428ff2ca621.rmeta --extern smallvec=/playground/target/debug/deps/libsmallvec-fd41795aab8d4e63.rmeta --extern socket2=/playground/target/debug/deps/libsocket2-2a501eb522251562.rmeta --extern spin=/playground/target/debug/deps/libspin-e47499cec9c84b90.rmeta --extern standback=/playground/target/debug/deps/libstandback-86a23f5513d5ae46.rmeta --extern string_cache=/playground/target/debug/deps/libstring_cache-598a1df464b810f8.rmeta --extern string_cache_codegen=/playground/target/debug/deps/libstring_cache_codegen-cae61850b3167ff9.rmeta --extern stringprep=/playground/target/debug/deps/libstringprep-efb98fe82f3f4d71.rmeta --extern strsim_0_8_0=/playground/target/debug/deps/libstrsim-ab6382a4d9bc06c2.rmeta --extern strsim=/playground/target/debug/deps/libstrsim-8749484d74aee88e.rmeta --extern subtle=/playground/target/debug/deps/libsubtle-c5fee972c74eec95.rmeta --extern syn=/playground/target/debug/deps/libsyn-ca661fe5d0b6210d.rmeta --extern synstructure=/playground/target/debug/deps/libsynstructure-c35d9652124a5fea.rmeta --extern tar=/playground/target/debug/deps/libtar-35d3c626965d66ff.rmeta --extern tempfile=/playground/target/debug/deps/libtempfile-416358705ded9b1e.rmeta --extern tendril=/playground/target/debug/deps/libtendril-286cae9caccfed10.rmeta --extern termcolor=/playground/target/debug/deps/libtermcolor-a38bb29f2ebce7f0.rmeta --extern textwrap_0_11_0=/playground/target/debug/deps/libtextwrap-229a6590d5347cb6.rmeta --extern textwrap=/playground/target/debug/deps/libtextwrap-646ac04f251395be.rmeta --extern thread_id=/playground/target/debug/deps/libthread_id-821f976137687467.rmeta --extern thread_local=/playground/target/debug/deps/libthread_local-a3cb54b617b50bf8.rmeta --extern threadpool=/playground/target/debug/deps/libthreadpool-10f9e924609e4e5d.rmeta --extern tiff=/playground/target/debug/deps/libtiff-686936b0f5ec7539.rmeta --extern time_0_1_43=/playground/target/debug/deps/libtime-ebc0de1b840d14f1.rmeta --extern time=/playground/target/debug/deps/libtime-398cbc3086749dbb.rmeta --extern time_macros=/playground/target/debug/deps/libtime_macros-2b3e5432dd55ff8f.rmeta --extern time_macros_impl=/playground/target/debug/deps/libtime_macros_impl-81a05f30e69730bb.so --extern tinyvec=/playground/target/debug/deps/libtinyvec-583985fdad518447.rmeta --extern tokio=/playground/target/debug/deps/libtokio-f73a183edff40894.rmeta --extern tokio_postgres=/playground/target/debug/deps/libtokio_postgres-7ff7f9d5ec077418.rmeta --extern tokio_tls=/playground/target/debug/deps/libtokio_tls-d278404cfe127afd.rmeta --extern tokio_util=/playground/target/debug/deps/libtokio_util-71402b3f73d2a3de.rmeta --extern toml=/playground/target/debug/deps/libtoml-6dc3a6202531c1c3.rmeta --extern tower_service=/playground/target/debug/deps/libtower_service-6344acc2d29f4d7e.rmeta --extern traitobject=/playground/target/debug/deps/libtraitobject-9329c4c6703ffe8a.rmeta --extern try_lock=/playground/target/debug/deps/libtry_lock-0eab1e75f6049487.rmeta --extern typemap=/playground/target/debug/deps/libtypemap-b5754c054e2e149a.rmeta --extern typenum=/playground/target/debug/deps/libtypenum-d4f346538c89252c.rmeta --extern unicase=/playground/target/debug/deps/libunicase-77c857ac8ce270a8.rmeta --extern unicode_bidi=/playground/target/debug/deps/libunicode_bidi-7e4276eb7b0e9656.rmeta --extern unicode_normalization=/playground/target/debug/deps/libunicode_normalization-19522d154379095f.rmeta --extern unicode_segmentation=/playground/target/debug/deps/libunicode_segmentation-f2fdc30213db2bae.rmeta --extern unicode_width=/playground/target/debug/deps/libunicode_width-e1291215efd2b1d6.rmeta --extern unicode_xid=/playground/target/debug/deps/libunicode_xid-6dad929435f4914b.rmeta --extern unsafe_any=/playground/target/debug/deps/libunsafe_any-13611d6c648a73f3.rmeta --extern untrusted=/playground/target/debug/deps/libuntrusted-3814fca2ebd1beb3.rmeta --extern url=/playground/target/debug/deps/liburl-94e6e41c410314a1.rmeta --extern utf8=/playground/target/debug/deps/libutf8-62ffe963ae6d5792.rmeta --extern utf8_ranges=/playground/target/debug/deps/libutf8_ranges-a23714c80157c339.rmeta --extern uuid=/playground/target/debug/deps/libuuid-52a7f2257be09422.rmeta --extern vec_map=/playground/target/debug/deps/libvec_map-662bab0cdc7d37f4.rmeta --extern version_check=/playground/target/debug/deps/libversion_check-29696fcd5d810c85.rmeta --extern void=/playground/target/debug/deps/libvoid-2992bb233a5ea14c.rmeta --extern walkdir=/playground/target/debug/deps/libwalkdir-72cc44e5bf95f991.rmeta --extern want=/playground/target/debug/deps/libwant-b780a23cb8972ba4.rmeta --extern winapi_0_2_8=/playground/target/debug/deps/libwinapi-c24d54c4c1e8b873.rmeta --extern winapi=/playground/target/debug/deps/libwinapi-29aa085936c2e9f0.rmeta --extern build=/playground/target/debug/deps/libbuild-7205bb72df0dfae5.rmeta --extern xattr=/playground/target/debug/deps/libxattr-b4fdf5392398f6fd.rmeta --extern xml5ever=/playground/target/debug/deps/libxml5ever-414e6c9bfa33f87f.rmeta --extern yaml_rust=/playground/target/debug/deps/libyaml_rust-f423241bcd78d604.rmeta -L native=/playground/target/debug/build/backtrace-sys-ea1ac1c5fe483d57/out -L native=/playground/target/debug/build/libsqlite3-sys-aa352d2903e7fc15/out -L native=/playground/target/debug/build/ring-6768125732cb54d3/out` (signal: 11, SIGSEGV: invalid memory reference)
@alecmocatta alecmocatta added the C-bug Category: This is a bug. label Jul 24, 2020
@jonas-schievink jonas-schievink added I-crash Issue: The compiler crashes (SIGSEGV, SIGABRT, etc). Use I-ICE instead when the compiler panics. I-prioritize Issue: Indicates that prioritization has been requested for this issue. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jul 24, 2020
@JohnTitor
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This segfault occurs since 1.45.0, 1.44.1 emits the expected error. It'd be great if we could bisect if possible.

@JohnTitor JohnTitor added E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc regression-from-stable-to-stable Performance or correctness regression from one stable version to another. labels Jul 24, 2020
@mati865
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mati865 commented Jul 24, 2020

18 out of 49855 backtrace frames:

Details 
#0  0x00007ffff6857435 in rustc_query_system::query::plumbing::get_query_impl ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#1  0x00007ffff67ba854 in rustc_middle::ty::print::pretty::PrettyPrinter::try_print_visible_def_path_recur ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#2  0x00007ffff67bab62 in rustc_middle::ty::print::pretty::PrettyPrinter::try_print_visible_def_path_recur ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#3  0x00007ffff67c57fe in <rustc_middle::ty::print::pretty::FmtPrinter<F> as rustc_middle::ty::print::Printer>::print_def_path ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#4  0x00007ffff67d2ba6 in rustc_middle::ty::print::Printer::default_print_def_path ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#5  0x00007ffff67c58a7 in <rustc_middle::ty::print::pretty::FmtPrinter<F> as rustc_middle::ty::print::Printer>::print_def_path ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#6  0x00007ffff67bed7d in rustc_middle::ty::print::pretty::PrettyPrinter::pretty_print_type ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#7  0x00007ffff69d7949 in rustc_middle::ty::print::pretty::<impl rustc_middle::ty::print::Print<P> for rustc_middle::ty::sty::TypeAndMut>::print ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#8  0x00007ffff67be474 in rustc_middle::ty::print::pretty::PrettyPrinter::pretty_print_type ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#9  0x00007ffff6b7c1af in rustc_middle::ty::print::pretty::<impl core::fmt::Display for &rustc_middle::ty::TyS>::fmt ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#10 0x00007ffff3b603ac in core::fmt::write () at src/libcore/fmt/mod.rs:1076
#11 0x00007ffff3b532da in core::fmt::Write::write_fmt ()
    at /rustc/5c9e5df3a097e094641f16dab501ab1c4da10e9f/src/libcore/fmt/mod.rs:193
#12 alloc::fmt::format () at src/liballoc/fmt.rs:586
#13 0x00007ffff62cc781 in <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::error_reporting::suggestions::InferCtxtExt>::note_obligation_cause_code ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#14 0x00007ffff62cc98e in <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::error_reporting::suggestions::InferCtxtExt>::note_obligation_cause_code ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#15 0x00007ffff62cc98e in <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::error_reporting::suggestions::InferCtxtExt>::note_obligation_cause_code ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#16 0x00007ffff62cc98e in <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::error_reporting::suggestions::InferCtxtExt>::note_obligation_cause_code ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so
#17 0x00007ffff62cc98e in <rustc_infer::infer::InferCtxt as rustc_trait_selection::traits::error_reporting::suggestions::InferCtxtExt>::note_obligation_cause_code ()
   from /home/mateusz/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/../lib/librustc_driver-62fe6623fe4416e5.so

Probably not very useful.

@LeSeulArtichaut
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It'd be great if we could bisect if possible.

I believe that we still have the bors artifacts, so it should be possible to use cargo-bisect-rustc. @rustbot ping cleanup

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@lcnr
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lcnr commented Jul 26, 2020

@rustbot ping cleanup

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rustbot commented Jul 26, 2020

Hey Cleanup Crew ICE-breakers! This bug has been identified as a good
"Cleanup ICE-breaking candidate". In case it's useful, here are some
instructions for tackling these sorts of bugs. Maybe take a look?
Thanks! <3

cc @AminArria @camelid @chrissimpkins @contrun @DutchGhost @elshize @ethanboxx @h-michael @HallerPatrick @hdhoang @hellow554 @imtsuki @kanru @KarlK90 @LeSeulArtichaut @MAdrianMattocks @matheus-consoli @mental32 @nmccarty @Noah-Kennedy @pard68 @PeytonT @pierreN @Redblueflame @RobbieClarken @RobertoSnap @robjtede @SarthakSingh31 @senden9 @shekohex @sinato @spastorino @turboladen @woshilapin @yerke

@rustbot rustbot added the ICEBreaker-Cleanup-Crew Helping to "clean up" bugs with minimal examples and bisections label Jul 26, 2020
@AminArria
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searched nightlies: from nightly-2020-05-07 to nightly-2020-05-08
regressed nightly: nightly-2020-05-08
searched commits: from 1836e3b to a08c473
regressed commit: 97f3eee

bisected with cargo-bisect-rustc v0.5.2

Host triple: x86_64-apple-darwin
Reproduce with:

cargo bisect-rustc --preserve --prompt --start 2020-05-07 --end 2020-05-08

@JohnTitor
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It's likely related -- cc @oli-obk

@JohnTitor JohnTitor removed E-needs-bisection Call for participation: This issue needs bisection: https://github.com/rust-lang/cargo-bisect-rustc ICEBreaker-Cleanup-Crew Helping to "clean up" bugs with minimal examples and bisections labels Jul 27, 2020
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tesuji commented Jul 27, 2020

Does #74708 fix this issue?

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JohnTitor commented Jul 27, 2020 •
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Does #74708 fix this issue?

Hm, I don't think so, let me confirm it. -- Confirmed with the master toolchain, it doesn't fix this.

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oli-obk commented Jul 27, 2020

I believe we need to wrap

rust/src/librustc_trait_selection/traits/error_reporting/suggestions.rs

Line 1915 in e8b55a4

self.note_obligation_cause_code(
and the similar invocations further down with ensure_sufficient_stack

@JohnTitor JohnTitor mentioned this issue Jul 27, 2020
Merged
@bors bors closed this as completed in 539ba96 Jul 27, 2020
@jyn514 jyn514 removed the I-prioritize Issue: Indicates that prioritization has been requested for this issue. label Feb 28, 2021
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More ensure stack to avoid segfault with increased recursion_limit JohnTitor/rust