ld: Assertion failed: (0 && "lto symbol should not be in layout"), function symbolForAtom, file Layout.cpp, line 1381.

[ibuclaw]

Building DMD on OSX with -O -inline -release -flto=full: https://github.com/dlang/installer/actions/runs/9023729802/job/24796283183

Judging from the error, only -flto=full seems to be important here.

Copy of logs.

Command: /private/var/folders/3m/p59k4qdj0f17st0gn2cmj3640000gn/T/tmp.mapdCK/ldc/ldc2-1.37.0-osx-x86_64/bin/ldmd2 -of/private/var/folders/3m/p59k4qdj0f17st0gn2cmj3640000gn/T/tmp.mapdCK/clones/dmd/generated/osx/release/64/dmd -vtls -J/private/var/folders/3m/p59k4qdj0f17st0gn2cmj3640000gn/T/tmp.mapdCK/clones/dmd/compiler/src/dmd/res -w -de -fPIC -m64 -J/private/var/folders/3m/p59k4qdj0f17st0gn2cmj3640000gn/T/tmp.mapdCK/clones/dmd/generated/osx/release/64 -I/private/var/folders/3m/p59k4qdj0f17st0gn2cmj3640000gn/T/tmp.mapdCK/clones/dmd/compiler/src -O -inline -release -flto=full -defaultlib=druntime-ldc-lto -color=on src/dmd/dinifile.d src/dmd/dmdparams.d src/dmd/gluelayer.d src/dmd/lib.d src/dmd/libelf.d src/dmd/libmach.d src/dmd/libmscoff.d src/dmd/libomf.d src/dmd/link.d src/dmd/mars.d src/dmd/main.d src/dmd/scanelf.d src/dmd/scanmach.d src/dmd/scanmscoff.d src/dmd/scanomf.d src/dmd/vsoptions.d src/dmd/access.d src/dmd/aggregate.d src/dmd/aliasthis.d src/dmd/argtypes_x86.d src/dmd/argtypes_sysv_x64.d src/dmd/argtypes_aarch64.d src/dmd/arrayop.d src/dmd/arraytypes.d src/dmd/astenums.d src/dmd/ast_node.d src/dmd/astcodegen.d src/dmd/asttypename.d src/dmd/attrib.d src/dmd/attribsem.d src/dmd/basicmangle.d src/dmd/blockexit.d src/dmd/builtin.d src/dmd/canthrow.d src/dmd/chkformat.d src/dmd/cli.d src/dmd/clone.d src/dmd/compiler.d src/dmd/cond.d src/dmd/constfold.d src/dmd/cppmangle.d src/dmd/cppmanglewin.d src/dmd/cpreprocess.d src/dmd/ctfeexpr.d src/dmd/ctorflow.d src/dmd/dcast.d src/dmd/dclass.d src/dmd/declaration.d src/dmd/delegatize.d src/dmd/denum.d src/dmd/dimport.d src/dmd/dinterpret.d src/dmd/dmacro.d src/dmd/dmangle.d src/dmd/dmodule.d src/dmd/doc.d src/dmd/dscope.d src/dmd/dstruct.d src/dmd/dsymbol.d src/dmd/dsymbolsem.d src/dmd/dtemplate.d src/dmd/dtoh.d src/dmd/dversion.d src/dmd/enumsem.d src/dmd/escape.d src/dmd/expression.d src/dmd/expressionsem.d src/dmd/func.d src/dmd/funcsem.d src/dmd/hdrgen.d src/dmd/iasm.d src/dmd/iasmgcc.d src/dmd/impcnvtab.d src/dmd/imphint.d src/dmd/importc.d src/dmd/init.d src/dmd/initsem.d src/dmd/inline.d src/dmd/inlinecost.d src/dmd/intrange.d src/dmd/json.d src/dmd/lambdacomp.d src/dmd/mtype.d src/dmd/mustuse.d src/dmd/nogc.d src/dmd/nspace.d src/dmd/ob.d src/dmd/objc.d src/dmd/opover.d src/dmd/optimize.d src/dmd/parse.d src/dmd/parsetimevisitor.d src/dmd/permissivevisitor.d src/dmd/postordervisitor.d src/dmd/pragmasem.d src/dmd/printast.d src/dmd/rootobject.d src/dmd/safe.d src/dmd/sapply.d src/dmd/semantic2.d src/dmd/semantic3.d src/dmd/sideeffect.d src/dmd/statement.d src/dmd/statement_rewrite_walker.d src/dmd/statementsem.d src/dmd/staticassert.d src/dmd/staticcond.d src/dmd/stmtstate.d src/dmd/target.d src/dmd/templatesem.d src/dmd/templateparamsem.d src/dmd/traits.d src/dmd/transitivevisitor.d src/dmd/typesem.d src/dmd/typinf.d src/dmd/utils.d src/dmd/visitor.d src/dmd/foreachvar.d src/dmd/cparse.d src/dmd/dmsc.d src/dmd/e2ir.d src/dmd/iasmdmd.d src/dmd/glue.d src/dmd/objc_glue.d src/dmd/s2ir.d src/dmd/tocsym.d src/dmd/toctype.d src/dmd/tocvdebug.d src/dmd/todt.d src/dmd/toir.d src/dmd/toobj.d src/dmd/backend/cc.d src/dmd/backend/cdef.d src/dmd/backend/cgcv.d src/dmd/backend/code.d src/dmd/backend/cv4.d src/dmd/backend/dt.d src/dmd/backend/el.d src/dmd/backend/global.d src/dmd/backend/obj.d src/dmd/backend/oper.d src/dmd/backend/rtlsym.d src/dmd/backend/code_x86.d src/dmd/backend/iasm.d src/dmd/backend/codebuilder.d src/dmd/backend/ty.d src/dmd/backend/type.d src/dmd/backend/mach.d src/dmd/backend/mscoff.d src/dmd/backend/dwarf.d src/dmd/backend/dwarf2.d src/dmd/backend/xmm.d src/dmd/backend/dlist.d src/dmd/backend/melf.d src/dmd/root/aav.d src/dmd/root/complex.d src/dmd/root/env.d src/dmd/root/longdouble.d src/dmd/root/man.d src/dmd/root/optional.d src/dmd/root/response.d src/dmd/root/speller.d src/dmd/root/string.d src/dmd/root/strtold.d ../generated/osx/release/64/lexer.o ../generated/osx/release/64/backend.o ../generated/osx/release/64/common.o

-----------------------------------------------------------
0  0x102830f43  __assert_rtn + 64
1  0x1027d8a20  mach_o::Symbol ld::Layout::symbolForAtom<ld::LinkedAtomPlacement const>(ld::Atom const*, CString, ld::LinkedAtomPlacement const&, ld::DylibMapping const*, unsigned long long) const + 2384
2  0x1027d244b  void dispatchForEach<ld::AtomAndName const, void ld::buildSymbolTable<ld::LinkedAtomPlacement>(ld::SymbolTableLayout&, ld::Layout const&, ld::Options const&, ld::AtomSymbolPartition const&, ld::LinkedAtomPlacement const&, ld::DylibMapping const*, unsigned long long, bool, bool)::'lambda1'(unsigned long, ld::AtomAndName const&)>(std::__1::span<ld::LinkedAtomPlacement, 18446744073709551615ul>, unsigned long, void ld::buildSymbolTable<ld::LinkedAtomPlacement>(ld::SymbolTableLayout&, ld::Layout const&, ld::Options const&, ld::AtomSymbolPartition const&, ld::LinkedAtomPlacement const&, ld::DylibMapping const*, unsigned long long, bool, bool)::'lambda1'(unsigned long, ld::AtomAndName const&))::'lambda'(unsigned long)::operator()(unsigned long) const + 187
3  0x1027dd95b  ld::LayoutExecutable::writeToFile(char const*) + 9099
4  0x10277ff9f  main + 12831
ld: Assertion failed: (0 && "lto symbol should not be in layout"), function symbolForAtom, file Layout.cpp, line 1381.
clang: error: linker command failed with exit code 1 (use -v to see invocation)
Error: /usr/bin/cc failed with status: 1

Entering dir: /private/var/folders/3m/p59k4qdj0f17st0gn2cmj3640000gn/T/tmp.mapdCK
object.Exception@build_all.d(79): Enforcement failed
----------------
/Users/runner/hostedtoolcache/dc/ldc2-1.37.0/arm64/ldc2-1.37.0-osx-universal/bin/../import/std/exception.d:522 pure @safe noreturn std.exception.bailOut!(Exception).bailOut(immutable(char)[], ulong, scope const(char)[]) [0x104b09753]
/Users/runner/hostedtoolcache/dc/ldc2-1.37.0/arm64/ldc2-1.37.0-osx-universal/bin/../import/std/exception.d:442 pure @safe bool std.exception.enforce!().enforce!(bool).enforce(bool, lazy const(char)[], immutable(char)[], ulong) [0x104af8457]
/Users/runner/work/installer/installer/create_dmd_release/build_all.d:79 void build_all.Shell.__dtor() [0x104afa083]
/Users/runner/work/installer/installer/create_dmd_release/build_all.d:75 void build_all.Shell.__aggrDtor() [0x104afa11f]
/Users/runner/work/installer/installer/create_dmd_release/build_all.d:271 void build_all.runBuild(ref build_all.Box, immutable(char)[], bool, bool, immutable(char)[]) [0x104afad43]
/Users/runner/work/installer/installer/create_dmd_release/build_all.d:200 void build_all.Box.build(immutable(char)[], bool, bool, immutable(char)[]) [0x104afa8e3]
/Users/runner/work/installer/installer/create_dmd_release/build_all.d:667 _Dmain [0x104b0749b]

[kinke]

Oh wait a second, that job uses macos-latest, which is now arm64 macOS 14. So default /usr/bin/cc might not really like x86_64 input. So I'd try reverting to a x86 macOS runner, either macos-13 or macos-12 as first thing.

Edit: dlang/installer#576

[kinke]

Findings from that PR: looks Xcode v15-related, as the same assertion happens on macos-13 x86_64, with the same Xcode v15.0.1, but macos-12 with Xcode v14.2 works. dlang/installer#576 (comment)

[ibuclaw]

I almost forgot that I detest Xcode 15.0 - not only for asserting left and right, but also for being buggy as hell.

dlang/dmd#16240