0.7.0

Only 6 weeks since our last release, but the team still got a lot done! We've split changes into separate sections this time, so hopefully it's a bit easier to read.

🚀 Features

• Add handling of the .symver asm directives (#994)
• Allow absolute-value symbol to be used as an entry point
• Allow setting entry point for shared objects
• Reintroduce handling of tail-merged strings (#1117)
• Implement --retain-symbols-file (#1262)
• Allow mixing of argument files and regular arguments (#1148)
• Support VERSION command in linker script
• Ignore '-no-fatal-warnings' option (#1192)
• Increase maximal supported alignment to 2^16 (#1190)
• Include git commit in linker version (#1203)
• Add support for .note.stapsdt sections (#1202)
• Check for overflow on 32bit relocations (#1175)
• Support tokens enclosed in double quotes in linker scripts
• Support flag --no-mmap-output-file (#1215)

⚡ Performance

• Limit default parallelism in string merging
• Rewrite scheduling of string merging tasks (#1240)

🪲 Bug Fixes

• Fill some bytes with zeros (affects --update-in-place) (#1237)
• Improve handling of non-absolute paths in save-dir (#1244)
• Pad copy relocations according to alignment (#1251)
• Don't allow hidden/protected symbols to reference shared objects (#1258)
• Use local symbol interposability when processing relocations (#1259)
• Make --strip-debug suppress earlier --strip-all (#1261)
• Fix compilation on riscv (#1100)
• Distinguish default version (@@) from non-default (@). (#1129)
• Only emit PT_INTERP for shared executables
• Add RISCV_ATTRIBUTE program segment (#1166)
• Don't create GOT/PLT entries for ifuncs that aren't referenced (#1185)
• Improve handling of relocations in non-alloc sections (#1196)
• Fix lookup of the riscv-fix-hi-part (#1198)
• Make --warn-unresolved-symbols match GNU ld's behaviour (#1217)
• Handle missing GNU_PROPERTY .note.gnu.property values (#1222)
• Allow dynamic symbols to refer to merged strings (#1147)

🏗️ Builds

• Build for (aarch|x86_|riscv)64(|gc)-unknown-linux-(musl|gnu) (#1151)
• Link musl releases with Wild

📚 Documentation

• Move nix docs to a separate file and update supported features list (#1113)
• Remove archive_splitter.rs reference from DESIGN.md (#1145)
• Update benchmarks, this time with bar charts
• Add instructions for using Wild with Rust on Illumos. (#1171)
• Document crate dependency version policy (#1140)
• Customise git-cliff config and document commit message format (#1267)

🕹️ Porting

• Initial support for Illumos (#1197)

⚖️ Linker Diff

• Add support for RISC-V (#920)
• Ensure all columns in tables have same width (#1247)

🧪 Testing

• Use wild for build in CI (#1091)
• Verify build on riscv (#1101)
• Verify minimal versions in CI (#1142)
• Ignore some diffs in risc-v tests (#1236)
• Use test-config-ci.toml in CI (#1234)
• Report sections where --update-in-place misses writes (#1239)
• Set the TRIPLE environment variable if needed when running mold tests
• Fix potential template-injection in CI
• Fix a couple of tests that were failing on recent opensuse (#1241)
• Don't skip running dynamically linked executables (#1248)
• Apt-get update before installing for riscv build workflow (#1255)
• Prevent race between test cases re-creating the same .so file (#1107)
• Use depfile in integrationtests (#1123)
• Use correct exit syscall number on Illumos (#1138)
• Look for dynamic linker in /bin/less in integ test (#1159)
• Unignore symbol-versions3.sh Mold test
• Make integration test diffing an opt-in feature (#1158)
• Integration tests: Make symbol assertions more extensible (#1169)
• Better error message when test unexpectedly pasess (#1176)
• Print clang version when clang-format fails (#1183)
• Clarify clang-format version mismatch instructions (#1193)
• Increase test binary execution timeout (#1188)
• Add a test for handling of note sections (#1211)
• Integration tests: Make skipping tests on unsupported flags more generic (#1225)
• Integration tests: Make compilation errors easier to find (#1224)
• Add basic testing for update-in-place flag (#1230)
• Limit the conditions for executing update-nix-lockfile

🔨 Refactor

• Use u32_from_slice (#1128)
• Introduce BitExtraction trait for u64 (#1157)
• Restructure code in symbol_db.rs a bit (#1252)
• Build only C++ and Rust demanglers
• Simplify get_host_architecture (#1164)
• Merge ResolutionFlags and ValueFlags (#1180)
• Move per-symbol-flags out of SymbolDb (#1186)
• Delete ValueFlags::ADDRESS (#1189)
• Replace all uses of bytemuck with zerocopy (#1210)
• Add readable Debug implementations for internal data structures (#1227)
• Macro to generate ELF newtypes and new SymbolType (#1228)

👥 Contributors

• davidlattimore
• marxin
• mati865
• daniel-levin
• lapla-cogito
• karolzwolak
• andrewdavidmackenzie
• el-yawd
• TechnoPorg
• jarjk
• jakobhellermann
• YamasouA

💲 Sponsors

Thanks to everyone who has sponsored davidlattimore, in particular the following people who have sponsored at least $30 since the last release:

• repi
• rrbutani
• Rafferty97
• CodeursenLiberte
• mati865
• ArthurBrussee
• wasmerio
• +50 others