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| 1 | +//@ only-apple |
| 2 | +//@ ignore-cross-compile |
| 3 | + |
| 4 | +use std::collections::HashSet; |
| 5 | + |
| 6 | +use run_make_support::object::Endianness; |
| 7 | +use run_make_support::object::macho::{MachHeader64, N_EXT, N_PEXT, N_SECT, N_STAB, N_TYPE}; |
| 8 | +use run_make_support::object::read::archive::ArchiveFile; |
| 9 | +use run_make_support::object::read::macho::{MachHeader as _, Nlist as _}; |
| 10 | +use run_make_support::path_helpers::source_root; |
| 11 | +use run_make_support::{cc, extra_c_flags, object, rfs, run, rustc, static_lib_name}; |
| 12 | + |
| 13 | +type MachOFileHeader64 = MachHeader64<Endianness>; |
| 14 | +type SymbolTable<'data> = |
| 15 | + run_make_support::object::read::macho::SymbolTable<'data, MachOFileHeader64>; |
| 16 | + |
| 17 | +const EXPORTED: &[&str] = &["my_add", "my_hash_lookup", "call_internal", "my_safe_div"]; |
| 18 | + |
| 19 | +fn main() { |
| 20 | + let sibling = source_root().join("tests/run-make/staticlib-rename-internal-symbols"); |
| 21 | + rfs::copy(sibling.join("lib.rs"), "lib.rs"); |
| 22 | + rfs::copy(sibling.join("main.c"), "main.c"); |
| 23 | + rfs::copy(sibling.join("liba.rs"), "liba.rs"); |
| 24 | + rfs::copy(sibling.join("libb.rs"), "libb.rs"); |
| 25 | + rfs::copy(sibling.join("dual_main.c"), "dual_main.c"); |
| 26 | + |
| 27 | + test_basic_functionality(); |
| 28 | + test_suffix_present(); |
| 29 | + test_dual_staticlib_linking(); |
| 30 | +} |
| 31 | + |
| 32 | +fn test_basic_functionality() { |
| 33 | + let lib_name = static_lib_name("lib"); |
| 34 | + |
| 35 | + rustc() |
| 36 | + .input("lib.rs") |
| 37 | + .crate_type("staticlib") |
| 38 | + .arg("-Zstaticlib-rename-internal-symbols") |
| 39 | + .opt() |
| 40 | + .run(); |
| 41 | + |
| 42 | + cc().input("main.c").input(&lib_name).out_exe("main").args(extra_c_flags()).run(); |
| 43 | + run("main"); |
| 44 | + |
| 45 | + rfs::remove_file(&lib_name); |
| 46 | +} |
| 47 | + |
| 48 | +fn test_suffix_present() { |
| 49 | + let lib_name = static_lib_name("lib"); |
| 50 | + |
| 51 | + rustc() |
| 52 | + .input("lib.rs") |
| 53 | + .crate_type("staticlib") |
| 54 | + .arg("-Zstaticlib-rename-internal-symbols") |
| 55 | + .opt() |
| 56 | + .run(); |
| 57 | + |
| 58 | + let data = rfs::read(&lib_name); |
| 59 | + check_rename_symbols(&data); |
| 60 | + |
| 61 | + rfs::remove_file(&lib_name); |
| 62 | +} |
| 63 | + |
| 64 | +fn test_dual_staticlib_linking() { |
| 65 | + let liba_name = static_lib_name("liba"); |
| 66 | + let libb_name = static_lib_name("libb"); |
| 67 | + |
| 68 | + rustc() |
| 69 | + .input("liba.rs") |
| 70 | + .crate_type("staticlib") |
| 71 | + .arg("-Zstaticlib-rename-internal-symbols") |
| 72 | + .opt() |
| 73 | + .run(); |
| 74 | + |
| 75 | + rustc() |
| 76 | + .input("libb.rs") |
| 77 | + .crate_type("staticlib") |
| 78 | + .arg("-Zstaticlib-rename-internal-symbols") |
| 79 | + .opt() |
| 80 | + .run(); |
| 81 | + |
| 82 | + cc().input("dual_main.c") |
| 83 | + .input(&liba_name) |
| 84 | + .input(&libb_name) |
| 85 | + .out_exe("dual_main") |
| 86 | + .args(extra_c_flags()) |
| 87 | + .run(); |
| 88 | + run("dual_main"); |
| 89 | +} |
| 90 | + |
| 91 | +fn check_rename_symbols(archive_data: &[u8]) { |
| 92 | + let archive = ArchiveFile::parse(archive_data).unwrap(); |
| 93 | + let mut found_exported = HashSet::new(); |
| 94 | + let mut found_suffix = false; |
| 95 | + |
| 96 | + for member in archive.members() { |
| 97 | + let member = member.unwrap(); |
| 98 | + let data = member.data(archive_data).unwrap(); |
| 99 | + |
| 100 | + let Ok(header) = MachOFileHeader64::parse(data, 0) else { continue }; |
| 101 | + let Ok(endian) = header.endian() else { continue }; |
| 102 | + |
| 103 | + let Some(symtab) = find_symtab(header, endian, data) else { continue }; |
| 104 | + let strtab = symtab.strings(); |
| 105 | + |
| 106 | + for nlist in symtab.iter() { |
| 107 | + let n_type = nlist.n_type(); |
| 108 | + if n_type & N_STAB != 0 { |
| 109 | + continue; |
| 110 | + } |
| 111 | + if n_type & N_EXT == 0 { |
| 112 | + continue; |
| 113 | + } |
| 114 | + if n_type & N_TYPE != N_SECT { |
| 115 | + continue; |
| 116 | + } |
| 117 | + |
| 118 | + let Ok(name_bytes) = nlist.name(endian, strtab) else { continue }; |
| 119 | + let Ok(name) = std::str::from_utf8(name_bytes) else { continue }; |
| 120 | + let name = name.strip_prefix('_').unwrap_or(name); |
| 121 | + |
| 122 | + if EXPORTED.contains(&name) { |
| 123 | + assert!( |
| 124 | + !name.contains("_rs"), |
| 125 | + "exported symbol `{name}` should not contain _rs suffix" |
| 126 | + ); |
| 127 | + found_exported.insert(name.to_string()); |
| 128 | + } else { |
| 129 | + assert!( |
| 130 | + name.contains("_rs"), |
| 131 | + "internal symbol `{name}` should contain _rs suffix after rename" |
| 132 | + ); |
| 133 | + found_suffix = true; |
| 134 | + } |
| 135 | + } |
| 136 | + } |
| 137 | + |
| 138 | + assert!(found_suffix, "expected to find at least one renamed symbol with _rs suffix"); |
| 139 | + for expected in EXPORTED { |
| 140 | + assert!( |
| 141 | + found_exported.contains(*expected), |
| 142 | + "expected to find exported symbol `{expected}` in archive" |
| 143 | + ); |
| 144 | + } |
| 145 | +} |
| 146 | + |
| 147 | +fn find_symtab<'data>( |
| 148 | + header: &MachOFileHeader64, |
| 149 | + endian: Endianness, |
| 150 | + data: &'data [u8], |
| 151 | +) -> Option<SymbolTable<'data>> { |
| 152 | + let mut commands = header.load_commands(endian, data, 0).ok()?; |
| 153 | + while let Ok(Some(command)) = commands.next() { |
| 154 | + if let Ok(Some(symtab_cmd)) = command.symtab() { |
| 155 | + return symtab_cmd.symbols::<MachOFileHeader64, _>(endian, data).ok(); |
| 156 | + } |
| 157 | + } |
| 158 | + None |
| 159 | +} |
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