diff options
| author | bors <bors@rust-lang.org> | 2025-04-24 22:59:00 +0000 |
|---|---|---|
| committer | bors <bors@rust-lang.org> | 2025-04-24 22:59:00 +0000 |
| commit | 847e3ee6b0e614937eee4e6d8f61094411eadcc0 (patch) | |
| tree | 39adc11d0d7e3e7cb21421c9a2e2a83c89daa8d6 /compiler/rustc_codegen_ssa/src | |
| parent | d7ea436a02d5de4033fcf7fd4eb8ed965d0f574c (diff) | |
| parent | b1a38313cb0dee9a7c5573ae37ad48b0a347cb7c (diff) | |
| download | rust-847e3ee6b0e614937eee4e6d8f61094411eadcc0.tar.gz rust-847e3ee6b0e614937eee4e6d8f61094411eadcc0.zip | |
Auto merge of #139752 - usamoi:macos-used, r=saethlin,madsmtm
set subsections_via_symbols for ld64 helper sections closes https://github.com/rust-lang/rust/issues/139744 cc `@madsmtm`
Diffstat (limited to 'compiler/rustc_codegen_ssa/src')
| -rw-r--r-- | compiler/rustc_codegen_ssa/src/back/link.rs | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/compiler/rustc_codegen_ssa/src/back/link.rs b/compiler/rustc_codegen_ssa/src/back/link.rs index 8de68925cab..f0c47ac41e8 100644 --- a/compiler/rustc_codegen_ssa/src/back/link.rs +++ b/compiler/rustc_codegen_ssa/src/back/link.rs @@ -2015,6 +2015,12 @@ fn add_linked_symbol_object( file.set_mangling(object::write::Mangling::None); } + if file.format() == object::BinaryFormat::MachO { + // Divide up the sections into sub-sections via symbols for dead code stripping. + // Without this flag, unused `#[no_mangle]` or `#[used]` cannot be discard on MachO targets. + file.set_subsections_via_symbols(); + } + // ld64 requires a relocation to load undefined symbols, see below. // Not strictly needed if linking with lld, but might as well do it there too. let ld64_section_helper = if file.format() == object::BinaryFormat::MachO { |