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Fix the problem with check-fast randomly failing

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Trans has been assuming that tag node id's are unique across crates and they
are not so, depending on which way the wind is blowing, it would choose to use
a crate-local tag variant instead of the correct one from std.

No test case since I can't come up with a reliable one that compiles in a
reasonable amount of time.
This commit is contained in:
Brian Anderson 2011-10-20 15:26:26 -07:00
parent f8f1d950ef
commit 0714bb5f7d
3 changed files with 18 additions and 5 deletions
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9
src/comp/middle/trans.rs
View File

@ -3026,7 +3026,7 @@ fn lval_static_fn(bcx: @block_ctxt, tpt: ty::ty_param_kinds_and_ty,
}
fn lookup_discriminant(lcx: @local_ctxt, vid: ast::def_id) -> ValueRef {
alt lcx.ccx.discrims.find(vid.node) {
alt lcx.ccx.discrims.find(vid) {
none. {
// It's an external discriminant that we haven't seen yet.
assert (vid.crate != ast::local_crate);
@ -3039,7 +3039,7 @@ fn lookup_discriminant(lcx: @local_ctxt, vid: ast::def_id) -> ValueRef {
llvm::LLVMSetLinkage(gvar,
lib::llvm::LLVMExternalLinkage as llvm::Linkage);
llvm::LLVMSetGlobalConstant(gvar, True);
lcx.ccx.discrims.insert(vid.node, gvar);
lcx.ccx.discrims.insert(vid, gvar);
ret gvar;
}
some(llval) { ret llval; }
@ -6086,7 +6086,8 @@ fn trans_constant(ccx: @crate_ctxt, it: @ast::item, &&pt: [str],
});
llvm::LLVMSetInitializer(discrim_gvar, C_int(i as int));
llvm::LLVMSetGlobalConstant(discrim_gvar, True);
ccx.discrims.insert(variant.node.id, discrim_gvar);
ccx.discrims.insert(
ast_util::local_def(variant.node.id), discrim_gvar);
ccx.discrim_symbols.insert(variant.node.id, s);
i += 1u;
}
@ -6288,7 +6289,7 @@ fn trans_crate(sess: session::session, crate: @ast::crate, tcx: ty::ctxt,
mutable main_fn: none::<ValueRef>,
link_meta: link_meta,
tag_sizes: tag_sizes,
discrims: new_int_hash::<ValueRef>(),
discrims: ast_util::new_def_id_hash::<ValueRef>(),
discrim_symbols: new_int_hash::<str>(),
consts: new_int_hash::<ValueRef>(),
obj_methods: new_int_hash::<()>(),

2
src/comp/middle/trans_common.rs
View File

@ -102,7 +102,7 @@ type crate_ctxt =
mutable main_fn: option::t<ValueRef>,
link_meta: link::link_meta,
tag_sizes: hashmap<ty::t, uint>,
discrims: hashmap<ast::node_id, ValueRef>,
discrims: hashmap<ast::def_id, ValueRef>,
discrim_symbols: hashmap<ast::node_id, str>,
consts: hashmap<ast::node_id, ValueRef>,
obj_methods: hashmap<ast::node_id, ()>,

12
src/comp/syntax/ast_util.rs
View File

@ -184,6 +184,18 @@ fn eq_ty(&&a: @ty, &&b: @ty) -> bool { ret std::box::ptr_eq(a, b); }
fn hash_ty(&&t: @ty) -> uint { ret t.span.lo << 16u + t.span.hi; }
fn hash_def_id(&&id: def_id) -> uint {
id.crate as uint << 16u + (id.node as uint)
}
fn eq_def_id(&&a: def_id, &&b: def_id) -> bool {
a == b
}
fn new_def_id_hash<@T>() -> std::map::hashmap<def_id, T> {
std::map::mk_hashmap(hash_def_id, eq_def_id)
}
fn block_from_expr(e: @expr) -> blk {
let blk_ = default_block([], option::some::<@expr>(e), e.id);
ret {node: blk_, span: e.span};