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Segfault / possible stack overflow due to recursion in TemplateInstantiation #1374

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dd-jh opened this issue May 27, 2024 · 1 comment
Open

Segfault / possible stack overflow due to recursion in TemplateInstantiation #1374

dd-jh opened this issue May 27, 2024 · 1 comment

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@dd-jh
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dd-jh commented May 27, 2024

Describe the bug
When attempting to generate bindings to webrtc::PeerConnectionFactory in libwebrtc, on macOS, the build script segfaults. The stacktrace is more than 14k frames long, so it might be blowing the stack? It looks like there is some recursion in autocxx-bindgen related to the processing of nested templates.

To Reproduce
Need the include files from libwebrtc in include/webrtc and from abseil in include/abseil.

build.rs

use std::{env, path::PathBuf};

fn main() -> miette::Result<()> {
  let include_paths: &[PathBuf] = &[
    "include/webrtc".into(),
    "include/abseil".into(),
  ];

  let mut clang_args = vec![
    "-std=c++17",
    "-DWEBRTC_POSIX",
  ];

  if env::var("CARGO_CFG_TARGET_OS").unwrap() == "macos" {
    clang_args.push("-DWEBRTC_MAC");
  }

  let mut build = autocxx_build::Builder::new("src/lib.rs", include_paths)
    .extra_clang_args(&clang_args)
    .build()?;

  for arg in clang_args {
    build.flag_if_supported(arg);
  }

  build.compile("libwebrtc");

  println!("cargo:rerun-if-changed=src/lib.rs");
  Ok(())
}

src/lib.rs:

autocxx::include_cpp! {
    #include "pc/peer_connection_factory.h"

    safety!(unsafe_ffi)

    generate!("webrtc::PeerConnectionFactory")
}

Stacktrace (middle frames elided):

* thread #1, name = 'main', queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x16f607ee0)
  * frame #0: 0x00000001004e1830 build-script-build`regex_automata::hybrid::search::find_overlapping_fwd::hf30169c0fe6021b9 + 16
    frame #1: 0x00000001004d1ecc build-script-build`regex_automata::hybrid::dfa::DFA::try_search_overlapping_fwd::h370ab0a40386d235 + 92
    frame #2: 0x00000001004d1fe0 build-script-build`regex_automata::hybrid::dfa::DFA::try_which_overlapping_matches::h61b31d4c4e95af50 + 60
    frame #3: 0x0000000100524948 build-script-build`regex_automata::meta::wrappers::HybridEngine::try_which_overlapping_matches::hd22f79a6ec09fccc + 108
    frame #4: 0x0000000100517738 build-script-build`_$LT$regex_automata..meta..strategy..Core$u20$as$u20$regex_automata..meta..strategy..Strategy$GT$::which_overlapping_matches::h0fe2233abde16d27 + 368
    frame #5: 0x00000001003452ec build-script-build`regex_automata::meta::regex::Regex::which_overlapping_matches::h3e957fb6807ab48c + 724
    frame #6: 0x0000000100390320 build-script-build`regex::regexset::string::RegexSet::matches_at::hb74235b79fe0ff26 + 152
    frame #7: 0x0000000100390478 build-script-build`regex::regexset::string::RegexSet::matches::hc7259c22873b40dd + 16
    frame #8: 0x000000010045a8bc build-script-build`autocxx_bindgen::regex_set::RegexSet::matches::h67884ad14c6c6588 + 196
    frame #9: 0x00000001003becf0 build-script-build`autocxx_bindgen::ir::context::BindgenContext::opaque_by_name::h8e890ec6f94e65f7 + 156
    frame #10: 0x0000000100384624 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h6895ff364b2cc9ab + 208
    frame #11: 0x00000001003c3a1c build-script-build`_$LT$T$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h5c30618c2c779604 + 116
    frame #12: 0x00000001003eb18c build-script-build`_$LT$autocxx_bindgen..ir..ty..Type$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h08fabeead6d3462e + 220
    frame #13: 0x0000000100384670 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::_$u7b$$u7b$closure$u7d$$u7d$::h7cae37535631f93a + 48
    frame #14: 0x000000010043c128 build-script-build`core::option::Option$LT$T$GT$::map_or::h78095547803e001e + 96
    frame #15: 0x00000001003845e0 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h6895ff364b2cc9ab + 140
    frame #16: 0x00000001003c3a1c build-script-build`_$LT$T$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h5c30618c2c779604 + 116
    frame #17: 0x00000001003eb18c build-script-build`_$LT$autocxx_bindgen..ir..ty..Type$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h08fabeead6d3462e + 220
    frame #18: 0x0000000100384670 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::_$u7b$$u7b$closure$u7d$$u7d$::h7cae37535631f93a + 48
    frame #19: 0x000000010043c128 build-script-build`core::option::Option$LT$T$GT$::map_or::h78095547803e001e + 96
    frame #20: 0x00000001003845e0 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h6895ff364b2cc9ab + 140
    frame #21: 0x00000001003c3a1c build-script-build`_$LT$T$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h5c30618c2c779604 + 116
    frame #22: 0x0000000100389c50 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..ir..item..IsOpaque$GT$::is_opaque::h0c81fe28ce9eb308 + 60
    frame #23: 0x0000000100377894 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::ha1644fd124ccc0cd + 48
    frame #24: 0x00000001003e49e4 build-script-build`_$LT$autocxx_bindgen..ir..ty..Type$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::h93dc1e0ff8379113 + 856
    frame #25: 0x0000000100377858 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::hca380356236b0b80 + 48
    frame #26: 0x0000000100455d14 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::_$u7b$$u7b$closure$u7d$$u7d$::h035979098be06bb2 + 112
    frame #27: 0x0000000100417468 build-script-build`core::iter::adapters::map::map_try_fold::_$u7b$$u7b$closure$u7d$$u7d$::haef921cdd44b7d36 + 56
    frame #28: 0x0000000100372220 build-script-build`core::iter::adapters::filter::filter_try_fold::_$u7b$$u7b$closure$u7d$$u7d$::h2ba17be0e6d7f149 + 172
    frame #29: 0x0000000100410778 build-script-build`core::iter::traits::iterator::Iterator::try_fold::hf764b097ec298367 + 200
    frame #30: 0x000000010036f958 build-script-build`_$LT$core..iter..adapters..filter..Filter$LT$I$C$P$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::h6065597b916db2d1 + 52
    frame #31: 0x0000000100413b5c build-script-build`_$LT$core..iter..adapters..map..Map$LT$I$C$F$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::he8a10955ca380094 + 44
    frame #32: 0x000000010038bfb8 build-script-build`_$LT$core..iter..adapters..GenericShunt$LT$I$C$R$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::h2565fc19a523c5d2 + 48
    frame #33: 0x000000010038bf04 build-script-build`_$LT$core..iter..adapters..GenericShunt$LT$I$C$R$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::next::h464911c913a927e0 + 24
    frame #34: 0x000000010030b0d0 build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..spec_from_iter_nested..SpecFromIterNested$LT$T$C$I$GT$$GT$::from_iter::ha09b3194865181ca + 40
    frame #35: 0x000000010031ca04 build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..spec_from_iter..SpecFromIter$LT$T$C$I$GT$$GT$::from_iter::h83f3d49acd53a43e + 12
    frame #36: 0x000000010031be1c build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$T$GT$$GT$::from_iter::h952791ade299f65d + 40
    frame #37: 0x000000010044540c build-script-build`_$LT$core..result..Result$LT$V$C$E$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$core..result..Result$LT$A$C$E$GT$$GT$$GT$::from_iter::_$u7b$$u7b$closure$u7d$$u7d$::hd94c15270afbb865 + 16
    frame #38: 0x000000010038f374 build-script-build`core::iter::adapters::try_process::h6378bb4c1a7f05a3 + 124
    frame #39: 0x00000001004453f0 build-script-build`_$LT$core..result..Result$LT$V$C$E$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$core..result..Result$LT$A$C$E$GT$$GT$$GT$::from_iter::h39dcf8a4d763941c + 40
    frame #40: 0x000000010041695c build-script-build`core::iter::traits::iterator::Iterator::collect::h5010ff9eb31760a4 + 12
    frame #41: 0x0000000100377af4 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::ha1644fd124ccc0cd + 656
    frame #42: 0x00000001003e49e4 build-script-build`_$LT$autocxx_bindgen..ir..ty..Type$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::h93dc1e0ff8379113 + 856
    frame #43: 0x0000000100377858 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::hca380356236b0b80 + 48
    frame #44: 0x0000000100455d14 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::_$u7b$$u7b$closure$u7d$$u7d$::h035979098be06bb2 + 112
    frame #45: 0x0000000100417468 build-script-build`core::iter::adapters::map::map_try_fold::_$u7b$$u7b$closure$u7d$$u7d$::haef921cdd44b7d36 + 56
    frame #46: 0x0000000100372220 build-script-build`core::iter::adapters::filter::filter_try_fold::_$u7b$$u7b$closure$u7d$$u7d$::h2ba17be0e6d7f149 + 172
    frame #47: 0x0000000100410778 build-script-build`core::iter::traits::iterator::Iterator::try_fold::hf764b097ec298367 + 200
    frame #48: 0x000000010036f958 build-script-build`_$LT$core..iter..adapters..filter..Filter$LT$I$C$P$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::h6065597b916db2d1 + 52
    frame #49: 0x0000000100413b5c build-script-build`_$LT$core..iter..adapters..map..Map$LT$I$C$F$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::he8a10955ca380094 + 44
    frame #50: 0x000000010038bfb8 build-script-build`_$LT$core..iter..adapters..GenericShunt$LT$I$C$R$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::h2565fc19a523c5d2 + 48
    frame #51: 0x000000010038bf04 build-script-build`_$LT$core..iter..adapters..GenericShunt$LT$I$C$R$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::next::h464911c913a927e0 + 24
    frame #52: 0x000000010030b0d0 build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..spec_from_iter_nested..SpecFromIterNested$LT$T$C$I$GT$$GT$::from_iter::ha09b3194865181ca + 40
    frame #53: 0x000000010031ca04 build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..spec_from_iter..SpecFromIter$LT$T$C$I$GT$$GT$::from_iter::h83f3d49acd53a43e + 12
    frame #54: 0x000000010031be1c build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$T$GT$$GT$::from_iter::h952791ade299f65d + 40
    frame #55: 0x000000010044540c build-script-build`_$LT$core..result..Result$LT$V$C$E$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$core..result..Result$LT$A$C$E$GT$$GT$$GT$::from_iter::_$u7b$$u7b$closure$u7d$$u7d$::hd94c15270afbb865 + 16
    frame #56: 0x000000010038f374 build-script-build`core::iter::adapters::try_process::h6378bb4c1a7f05a3 + 124
    frame #57: 0x00000001004453f0 build-script-build`_$LT$core..result..Result$LT$V$C$E$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$core..result..Result$LT$A$C$E$GT$$GT$$GT$::from_iter::h39dcf8a4d763941c + 40
    frame #58: 0x000000010041695c build-script-build`core::iter::traits::iterator::Iterator::collect::h5010ff9eb31760a4 + 12
    frame #59: 0x0000000100377af4 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::ha1644fd124ccc0cd + 656
    frame #60: 0x00000001003e49e4 build-script-build`_$LT$autocxx_bindgen..ir..ty..Type$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::h93dc1e0ff8379113 + 856
    frame #61: 0x0000000100377858 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::hca380356236b0b80 + 48
    frame #62: 0x0000000100455d14 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::_$u7b$$u7b$closure$u7d$$u7d$::h035979098be06bb2 + 112
    frame #63: 0x0000000100417468 build-script-build`core::iter::adapters::map::map_try_fold::_$u7b$$u7b$closure$u7d$$u7d$::haef921cdd44b7d36 + 56
    frame #64: 0x0000000100372220 build-script-build`core::iter::adapters::filter::filter_try_fold::_$u7b$$u7b$closure$u7d$$u7d$::h2ba17be0e6d7f149 + 172
    frame #65: 0x0000000100410778 build-script-build`core::iter::traits::iterator::Iterator::try_fold::hf764b097ec298367 + 200
    frame #66: 0x000000010036f958 build-script-build`_$LT$core..iter..adapters..filter..Filter$LT$I$C$P$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::h6065597b916db2d1 + 52
    frame #67: 0x0000000100413b5c build-script-build`_$LT$core..iter..adapters..map..Map$LT$I$C$F$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::he8a10955ca380094 + 44
    frame #68: 0x000000010038bfb8 build-script-build`_$LT$core..iter..adapters..GenericShunt$LT$I$C$R$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::h2565fc19a523c5d2 + 48
    frame #69: 0x000000010038bf04 build-script-build`_$LT$core..iter..adapters..GenericShunt$LT$I$C$R$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::next::h464911c913a927e0 + 24
    frame #70: 0x000000010030b0d0 build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..spec_from_iter_nested..SpecFromIterNested$LT$T$C$I$GT$$GT$::from_iter::ha09b3194865181ca + 40
    frame #71: 0x000000010031ca04 build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..spec_from_iter..SpecFromIter$LT$T$C$I$GT$$GT$::from_iter::h83f3d49acd53a43e + 12
    frame #72: 0x000000010031be1c build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$T$GT$$GT$::from_iter::h952791ade299f65d + 40
    frame #73: 0x000000010044540c build-script-build`_$LT$core..result..Result$LT$V$C$E$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$core..result..Result$LT$A$C$E$GT$$GT$$GT$::from_iter::_$u7b$$u7b$closure$u7d$$u7d$::hd94c15270afbb865 + 16
    frame #74: 0x000000010038f374 build-script-build`core::iter::adapters::try_process::h6378bb4c1a7f05a3 + 124
    frame #75: 0x00000001004453f0 build-script-build`_$LT$core..result..Result$LT$V$C$E$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$core..result..Result$LT$A$C$E$GT$$GT$$GT$::from_iter::h39dcf8a4d763941c + 40
    frame #76: 0x000000010041695c build-script-build`core::iter::traits::iterator::Iterator::collect::h5010ff9eb31760a4 + 12
    frame #77: 0x0000000100377af4 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::ha1644fd124ccc0cd + 656
    frame #78: 0x00000001003e49e4 build-script-build`_$LT$autocxx_bindgen..ir..ty..Type$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::h93dc1e0ff8379113 + 856
    frame #79: 0x0000000100377858 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::hca380356236b0b80 + 48
    frame #80: 0x0000000100455d14 build-script-build`_$LT$autocxx_bindgen..ir..template..TemplateInstantiation$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::_$u7b$$u7b$closure$u7d$$u7d$::h035979098be06bb2 + 112
    frame #81: 0x0000000100417468 build-script-build`core::iter::adapters::map::map_try_fold::_$u7b$$u7b$closure$u7d$$u7d$::haef921cdd44b7d36 + 56
    frame #82: 0x0000000100372220 build-script-build`core::iter::adapters::filter::filter_try_fold::_$u7b$$u7b$closure$u7d$$u7d$::h2ba17be0e6d7f149 + 172
    frame #83: 0x0000000100410778 build-script-build`core::iter::traits::iterator::Iterator::try_fold::hf764b097ec298367 + 200
    frame #84: 0x000000010036f958 build-script-build`_$LT$core..iter..adapters..filter..Filter$LT$I$C$P$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::h6065597b916db2d1 + 52
    frame #85: 0x0000000100413b5c build-script-build`_$LT$core..iter..adapters..map..Map$LT$I$C$F$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::he8a10955ca380094 + 44
    frame #86: 0x000000010038bfb8 build-script-build`_$LT$core..iter..adapters..GenericShunt$LT$I$C$R$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::try_fold::h2565fc19a523c5d2 + 48
    frame #87: 0x000000010038bf04 build-script-build`_$LT$core..iter..adapters..GenericShunt$LT$I$C$R$GT$$u20$as$u20$core..iter..traits..iterator..Iterator$GT$::next::h464911c913a927e0 + 24
    frame #88: 0x000000010030b0d0 build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..spec_from_iter_nested..SpecFromIterNested$LT$T$C$I$GT$$GT$::from_iter::ha09b3194865181ca + 40
    frame #89: 0x000000010031ca04 build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$alloc..vec..spec_from_iter..SpecFromIter$LT$T$C$I$GT$$GT$::from_iter::h83f3d49acd53a43e + 12
    frame #90: 0x000000010031be1c build-script-build`_$LT$alloc..vec..Vec$LT$T$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$T$GT$$GT$::from_iter::h952791ade299f65d + 40
    frame #91: 0x000000010044540c build-script-build`_$LT$core..result..Result$LT$V$C$E$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$core..result..Result$LT$A$C$E$GT$$GT$$GT$::from_iter::_$u7b$$u7b$closure$u7d$$u7d$::hd94c15270afbb865 + 16
    frame #92: 0x000000010038f374 build-script-build`core::iter::adapters::try_process::h6378bb4c1a7f05a3 + 124
    frame #93: 0x00000001004453f0 build-script-build`_$LT$core..result..Result$LT$V$C$E$GT$$u20$as$u20$core..iter..traits..collect..FromIterator$LT$core..result..Result$LT$A$C$E$GT$$GT$$GT$::from_iter::h39dcf8a4d763941c + 40
    frame #94: 0x000000010041695c build-script-build`core::iter::traits::iterator::Iterator::collect::h5010ff9eb31760a4 + 12
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    frame #14356: 0x0000000100377858 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::hca380356236b0b80 + 48
    frame #14357: 0x00000001003b0558 build-script-build`_$LT$T$u20$as$u20$autocxx_bindgen..codegen..TryToRustTy$GT$::try_to_rust_ty::hd55a105c30ec5a5d + 68
    frame #14358: 0x00000001003b0360 build-script-build`_$LT$T$u20$as$u20$autocxx_bindgen..codegen..ToRustTyOrOpaque$GT$::to_rust_ty_or_opaque::h3e12eacd61181344 + 76
    frame #14359: 0x00000001003d64e4 build-script-build`autocxx_bindgen::codegen::utils::fnsig_return_ty_internal::h096221c043a40542 + 240
    frame #14360: 0x00000001003d69ac build-script-build`autocxx_bindgen::codegen::utils::fnsig_return_ty::hffdb545e192809c2 + 20
    frame #14361: 0x0000000100378b58 build-script-build`_$LT$autocxx_bindgen..ir..function..Function$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::hdcd493cc5e07e26b + 1204
    frame #14362: 0x00000001003769c4 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::h320c5f170f204a48 + 392
    frame #14363: 0x000000010044f1f8 build-script-build`_$LT$autocxx_bindgen..ir..module..Module$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::_$u7b$$u7b$closure$u7d$$u7d$::hb127abcf7cc0eaf3 + 624
    frame #14364: 0x000000010044f3ac build-script-build`_$LT$autocxx_bindgen..ir..module..Module$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::_$u7b$$u7b$closure$u7d$$u7d$::h826db840a0834bc9 + 432
    frame #14365: 0x000000010044ed50 build-script-build`autocxx_bindgen::codegen::CodegenResult::inner::ha5773d0eccb1f7dc + 128
    frame #14366: 0x0000000100394070 build-script-build`_$LT$autocxx_bindgen..ir..module..Module$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::h7569306d60f0d2a1 + 368
    frame #14367: 0x0000000100376990 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::h320c5f170f204a48 + 340
    frame #14368: 0x000000010044f1f8 build-script-build`_$LT$autocxx_bindgen..ir..module..Module$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::_$u7b$$u7b$closure$u7d$$u7d$::hb127abcf7cc0eaf3 + 624
    frame #14369: 0x000000010044f3ac build-script-build`_$LT$autocxx_bindgen..ir..module..Module$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::_$u7b$$u7b$closure$u7d$$u7d$::h826db840a0834bc9 + 432
    frame #14370: 0x000000010044ed50 build-script-build`autocxx_bindgen::codegen::CodegenResult::inner::ha5773d0eccb1f7dc + 128
    frame #14371: 0x0000000100394070 build-script-build`_$LT$autocxx_bindgen..ir..module..Module$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::h7569306d60f0d2a1 + 368
    frame #14372: 0x0000000100376990 build-script-build`_$LT$autocxx_bindgen..ir..item..Item$u20$as$u20$autocxx_bindgen..codegen..CodeGenerator$GT$::codegen::h320c5f170f204a48 + 340
    frame #14373: 0x00000001004579cc build-script-build`autocxx_bindgen::codegen::codegen::_$u7b$$u7b$closure$u7d$$u7d$::h57c9eb7bf5310b9b + 2128
    frame #14374: 0x00000001003b9c30 build-script-build`autocxx_bindgen::ir::context::BindgenContext::gen::hafe45632bc130df6 + 352
    frame #14375: 0x0000000100457174 build-script-build`autocxx_bindgen::codegen::codegen::he10c6e4e72b5537e + 12
    frame #14376: 0x000000010045cf34 build-script-build`autocxx_bindgen::Bindings::generate::hc09313adb1f739c0 + 2924
    frame #14377: 0x000000010045b648 build-script-build`autocxx_bindgen::Builder::generate::h99a90556cca6199b + 424
    frame #14378: 0x00000001001c9184 build-script-build`autocxx_engine::IncludeCppEngine::generate::ha78f567427d3f483 + 1972
    frame #14379: 0x00000001001c563c build-script-build`autocxx_engine::parse_file::ParsedFile::resolve_all::hb76545f530d8dcbd + 900
    frame #14380: 0x000000010000c200 build-script-build`autocxx_engine::builder::Builder$LT$CTX$GT$::build_listing_files::h7a8842fc1bed0abb + 1748
    frame #14381: 0x000000010000d5d0 build-script-build`autocxx_engine::builder::Builder$LT$CTX$GT$::build::h5bac60c2820390bb + 32
    frame #14382: 0x000000010000730c build-script-build`build_script_build::main::h18011c924df2d34a + 824
    frame #14383: 0x0000000100008ea4 build-script-build`core::ops::function::FnOnce::call_once::h3be9856cd08b82c7 + 16
    frame #14384: 0x0000000100005468 build-script-build`std::sys_common::backtrace::__rust_begin_short_backtrace::hf961872fbfe01754 + 12
    frame #14385: 0x00000001000081d0 build-script-build`std::rt::lang_start::_$u7b$$u7b$closure$u7d$$u7d$::hc598a02cef7e15df + 20
    frame #14386: 0x00000001008d8314 build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 [inlined] core::ops::function::impls::_$LT$impl$u20$core..ops..function..FnOnce$LT$A$GT$$u20$for$u20$$RF$F$GT$::call_once::heaba8a29e0324069 at function.rs:284:13 [opt]
    frame #14387: 0x00000001008d830c build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 [inlined] std::panicking::try::do_call::h6e5fac4f4884d97b at panicking.rs:552:40 [opt]
    frame #14388: 0x00000001008d830c build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 [inlined] std::panicking::try::h2b98e2f3cf76cd78 at panicking.rs:516:19 [opt]
    frame #14389: 0x00000001008d830c build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 [inlined] std::panic::catch_unwind::hba9c97319335c08b at panic.rs:146:14 [opt]
    frame #14390: 0x00000001008d830c build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 [inlined] std::rt::lang_start_internal::_$u7b$$u7b$closure$u7d$$u7d$::h18efdcfb68f002e8 at rt.rs:148:48 [opt]
    frame #14391: 0x00000001008d830c build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 [inlined] std::panicking::try::do_call::ha793e16770aada4d at panicking.rs:552:40 [opt]
    frame #14392: 0x00000001008d8308 build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 [inlined] std::panicking::try::h8aa812e3e1310d12 at panicking.rs:516:19 [opt]
    frame #14393: 0x00000001008d8308 build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 [inlined] std::panic::catch_unwind::h38c4879f2623185e at panic.rs:146:14 [opt]
    frame #14394: 0x00000001008d8308 build-script-build`std::rt::lang_start_internal::h39923ab4c3913741 at rt.rs:148:20 [opt]
    frame #14395: 0x00000001000081a8 build-script-build`std::rt::lang_start::h70585e89a1a48830 + 60
    frame #14396: 0x00000001000074b4 build-script-build`main + 36
    frame #14397: 0x0000000182ae20e0 dyld`start + 2360
@adetaylor
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Interesting. That almost certainly applies to the upstream bindgen (though it's not 100% guaranteed).

The first thing to do when encountering bindgen errors is to upmerge the latest bindgen into autocxx-bindgen in case it's been fixed; this is fairly time consuming and unfortunately I won't have time in the foreseeable future. If you think you might, I'll send some hints on how.

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@adetaylor @dd-jh