v0.23.0

What's Changed

The major change here is a lot of rework of the safety!(unsafe_references_wrapped) mode, based on the researches done here. This is a compatibility break, but only if you're using that mode.

• Rewrite reference_wrapper.rs to be structs. by @adetaylor in #1164

There are also significant bug fixes to extern_rust_type!() as noted below.

Other features

• Support extern_cpp_type! with a different name by @bsilver8192 in #1150 (thanks!)

Bug fixes

• Fix problem with functions returning references which took non-reference parameters. by @adetaylor in #1156
• Merge bindgen upstream 0.62 by @adetaylor in #1183 (fixes an incompatibility with the latest clang, #1182)
• Fix 1161 by @adetaylor in #1162 (a problem with extern_rust_type)
• Extern rust fun type checking by @adetaylor in #1168 (thanks to "Add failing test for extern_rust_function" by @Ravenslofty in #1166)
• Fix movability of structs with enum fields by @adetaylor in #1179

Misc changes

• Remove extra logging by @adetaylor in #1157
• Rust 1.64 clippy lint. by @adetaylor in #1160
• Partial fix for issue 1097. by @adetaylor in #1158
• Revise cxx to 1.0.78. by @adetaylor in #1163
• Slight reduction speedup. by @adetaylor in #1171
• Format tomls by @adetaylor in #1175
• Update deps, format TOML by @vorot93 in #1152
• Adding a test. by @adetaylor in #1173
• Remove dependency on rustc_version. by @adetaylor in #1176
• Reduce includes a call to rustc by @adetaylor in #1172
• Nightly clippies by @adetaylor in #1184
• Work towards handling =default functions by @adetaylor in #1180

New Contributors

• @Ravenslofty made their first contribution in #1166
• @vorot93 made their first contribution in #1152

Full Changelog: v0.22.4...v0.23.0

v0.22.4

What's Changed

• Pretty print using prettyplease instead of rustfmt by @dtolnay in #1127
• Disable windows GNU by @adetaylor in #1136
• Bump mdbook to fix build on nightly by @bsilver8192 in #1139
• Generate impl UniquePtr for abstract types too by @bsilver8192 in #1137
• Fix new clippy and doc warnings in 1.63.0 by @bsilver8192 in #1148
• Support multiple AUTOCXX_RS_JSON_ARCHIVE entries by @bsilver8192 in #1147
• Add failing test case, issue 1143 by @boydjohnson in #1145
• Revise to autocxx-bindgen 0.60.1 by @adetaylor in #1149
• Update autocxx-bindgen and bump version to 0.22.4 by @chbaker0 in #1153
• Revise to 0.22.4. by @adetaylor in #1154

New Contributors

• @boydjohnson made their first contribution in #1145

Full Changelog: v0.22.3...v0.22.4

v0.22.3

What's Changed

The change here is an experimental new mode to use reference wrappers for C++ code, as explained here and in this example.

• Detect segfaults in reduction by @adetaylor in #1123
• Add test for issue 1125. by @adetaylor in #1126
• Introduce C++ reference wrappers by @adetaylor in #1070
• Revise to 0.22.3. by @adetaylor in #1131

Full Changelog: v0.22.2...v0.22.3

v0.22.2

What's Changed

• Slight speed improvement: tell bindgen to skip rustfmt by @bsilver8192 in #1109
• Replace lingering tempdir usages with tempfile by @chbaker0 in #1120
• Minor doc updates. by @adetaylor in #1117
• Fix faulty test_fixed_num test. by @adetaylor in #1118

New Contributors

• @chbaker0 made their first contribution in #1120

Full Changelog: v0.22.1...v0.22.2

v0.22.1

What's Changed

One new feature:

• Add a function to upcast UniquePtr by @bsilver8192 in #1112 (thanks!)

A roll of the minimum cxx version to work around a new clippy warning:

• Roll cxx minimal version. by @adetaylor in #1104

Lots of bug fixes:

• Solve anonymous namespaces and other problems by @adetaylor in #1088
• Ignore types named _bindgen_ty by @adetaylor in #1091
• Alter mdbook-mermaid installation. by @adetaylor in #1102
• Succeeding test for issue 1081 by @adetaylor in #1101
• Fix and test extern_cpp_type with type in a C++ namespace by @bsilver8192 in #1100
• Adding lots of ignored tests by @adetaylor in #1106
• Reject type params in typedefs by @adetaylor in #1108
• Issue 1094 by @adetaylor in #1095
• Fix #1092. by @adetaylor in #1093
• Reject typedefs to anon namespaces. by @adetaylor in #1107
• Fix and test subclass without safety!(unsafe) by @bsilver8192 in #1111
• Fix and test subclasses with C++ std in scope by @bsilver8192 in #1110

There is currently a known soundness problem, as noted in #1006.

Full Changelog: v0.22.0...v0.22.1

v0.22.0

What's Changed

Major changes to how the command line generation tool autocxx_gen works. If you're just using cargo you probably don't need to worry about this, but if you're using other build systems you'll almost certainly need to make changes.

• Remove --skip-cxx-gen by @adetaylor in #1052
• Support generating multiple bindings with a single autocxx_gen invocation by @adetaylor in #1061
• Minor cleanups by @adetaylor in #1051

There's also a compatibility change in that make_unique methods have been removed. They've been deprecated for a few releases now, so this shouldn't come as a surprise. Append .within_unique_ptr() everywhere you would have used it.

• Remove make_unique. by @adetaylor in #1040

This release also upgrades some of our dependencies:

• Upgrade to clap 3 by @gabriel-viviani (thanks!) in #1037

But mostly there are lots of bug fixes for cases where autocxx previously failed.

• Fix 'unsupported type' problem for typedefs pointing to enums by @adetaylor in #1074
• Properly disregard variadic functions by @adetaylor in #1076 (thanks to @yuxuan-xie for the report)
• Ignore inner type opaque typedefs by @adetaylor and @yuxuan-xie (thanks!) in #1083
• Fix "invalid application of" bug by @adetaylor in #1072
• Fwd decls in &UniquePtr<T> by @adetaylor in #1085
• Instantiable opaques by @adetaylor in #1086 (this one introduces a new directive, instantiable!, for niche cases)
• Add test for 'array' is not a class, namespace, or enumeration by @adetaylor in #1080
• Do not fail when encountering std::vector<char> by @adetaylor in #1060

Various other bug fixes or minor changes:

• Achieve predictable iteration order. by @adetaylor in #1044 - this makes output more deterministic
• Fix excessive generate_pod output in repro cases. by @adetaylor in #1058 - fixes a bug in the reproduction pipeline
• Better logging from autocxx-reduce. by @adetaylor in #1062
• Avoid duplicate stddef introduction in reduction. by @adetaylor in #1063
• Avoid redefining cxx types in reduction by @adetaylor in #1064
• Add stress test reduction pipeline. by @adetaylor in #1069

Full Changelog: v0.21.2...v0.22.0

v0.21.2

What's Changed

• Treat C++ warnings as fatal within the test suite, revealing a problem that needed to be fixed in our generated code...
• Fix unnecessary std::move by @adetaylor in #1048

Full Changelog: v0.21.1...v0.21.2

v0.21.1

What's Changed

Significant improvement (though some corner cases wouldn't surprise me): where possible, treat incomprehensible typedefs as opaque types by @adetaylor in #1035. Previously if we encountered a type that bindgen couldn't fully handle, we ignored that type plus any typedefs that depended upon it. Now, we still discard the type - but typedefs should continue to be somewhat usable.

Bug fixes

• Allow implicit constructors for structs with array fields by @adetaylor in #1039
• Fix pin problem. by @adetaylor in #1046

Internal and testing changes

• Modularize directive handling. by @adetaylor in #1032
• Add test for base class destructors getting called. by @adetaylor in #1041
• Add missing forward declaration tests. by @adetaylor in #1042
• Minor demo code updates. by @adetaylor in #1043

Full Changelog: v0.21.0...v0.21.1

v0.21.0

What's Changed

Major breaking change:

• Functions which return (non-POD) values no longer return a UniquePtr. Instead they return an impl New, so you can emplace them on the stack or in a Box if you prefer. If in doubt, simply append .within_unique_ptr() to go back to the old behavior. (#998)
• Function calls which take rvalue reference parameters (Thingy&&) are now supported (#821)

Bug fixes:

• Fix for mdbook off-by-one test ID. by @adetaylor in #1028

Full Changelog: v0.20.1...v0.21.0

v0.20.1

What's Changed

• Bug fix to stop important error messages disappearing (thanks to @testforvln for the report) - in #1021
• Slightly more flexibility when storing C++ objects in Rust boxes:
  • Cease to need MakeCppStorage to put something in a Box by @adetaylor in #1022
  • impl ValueParam for Pin<Box<T>> by @adetaylor in #1024

Various internal tidyings.

• Outdent a test. by @adetaylor in #1023
• Fix destructor trait safety. by @adetaylor in #1025
• Unsafe dialect by @adetaylor in #1026
• Upgrade to 0.20.1. by @adetaylor in #1027

The next release is likely to be a significant compatibility break as we land a major part of #379.

Full Changelog: v0.20.0...v0.20.1