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macho: do not assume entrypoint is defined

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This commit is contained in:
Jakub Konka 2023-04-01 06:49:01 +02:00
parent 5d0bb50e3d
commit 2dd178443a
1 changed files with 12 additions and 8 deletions
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20
src/link/MachO/dead_strip.zig
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@ -43,15 +43,19 @@ fn collectRoots(zld: *Zld, roots: *AtomTable) !void {
.Exe => {
// Add entrypoint as GC root
const global: SymbolWithLoc = zld.getEntryPoint();
const object = zld.objects.items[global.getFile().?];
const atom_index = object.getAtomIndexForSymbol(global.sym_index).?; // panic here means fatal error
_ = try roots.getOrPut(atom_index);
if (global.getFile()) |file| {
const object = zld.objects.items[file];
const atom_index = object.getAtomIndexForSymbol(global.sym_index).?; // panic here means fatal error
_ = try roots.getOrPut(atom_index);
log.debug("root(ATOM({d}, %{d}, {?d}))", .{
atom_index,
zld.getAtom(atom_index).sym_index,
zld.getAtom(atom_index).getFile(),
});
log.debug("root(ATOM({d}, %{d}, {?d}))", .{
atom_index,
zld.getAtom(atom_index).sym_index,
zld.getAtom(atom_index).getFile(),
});
} else {
assert(zld.getSymbol(global).undf()); // Stub as our entrypoint is in a dylib.
}
},
else => |other| {
assert(other == .Lib);