Do not ICE in codegen when using a extern_type static #58192
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Feb 5, 2019
| llextra: None, | ||
| layout: layout, | ||
| align: layout.align.abi | ||
| } |
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This does feel a bit reckless to me. Would it be better to instead make the change here so that this is only allowed in the case of a r-value that is a reference to a static?
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I think the right thing to do is to create a new constructor method (new_thin_place maybe?) that uses !type_has_metadata instead of is_sized in the assertion.
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That is definitely a good check to add. At the very least it seems like a good idea to add it inline here.
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@oli-obk Added PlaceRef::new_thin_place. It is only used in place.rs currently, so I didn't make the function pub.
The layout of a extern_type static is unsized, but may pass the Well-Formed check in typeck. As a result, we cannot assume that a static is sized when generating the `Place` for an r-value.
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Do not ICE in codegen when using a extern_type static The layout of a extern_type static is unsized, but may pass the Well-Formed check in typeck (See rust-lang#55257). As a result, we cannot assume that a static is sized when generating the `Place` for an r-value. Fixes: rust-lang#57876 r? @oli-obk
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Rollup of 23 pull requests Successful merges: - #58118 (Transition libtest to 2018 edition) - #58119 (libproc_macro => 2018) - #58123 (Avoid some bounds checks in binary_heap::{PeekMut,Hole}) - #58124 (libsyntax_pos => 2018) - #58133 (libsyntax_ext => 2018) - #58136 (Improve error message and docs for non-UTF-8 bytes in stdio on Windows) - #58156 (update submodule: rust-installer from 27dec6c to ccdc47b) - #58192 (Do not ICE in codegen when using a extern_type static) - #58193 (Move librustc to 2018) - #58210 (Make an assert debug-only in `find_constraint_paths_between_regions`.) - #58217 (librustc_tsan => 2018) - #58218 (librustc_msan => 2018) - #58219 (librustc_asan => 2018) - #58220 (libprofiler_builtins => 2018) - #58223 (librustc_lsan => 2018) - #58225 (librustc_fs_util => 2018) - #58228 (librustc_plugin => 2018) - #58236 (librustc_resolve => 2018) - #58237 (Fix broken grammar in iter::from_fn() docs) - #58239 (librustc_apfloat => 2018) - #58240 (librustc_errors => 2018) - #58241 (librustc_llvm => 2018) - #58242 (Document the one TyKind that isn't documented) Failed merges: - #58185 (Remove images' url to make it work even without internet connection) r? @ghost
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The layout of a extern_type static is unsized, but may pass the
Well-Formed check in typeck (See #55257). As a result, we
cannot assume that a static is sized when generating the
Placefor an r-value.
Fixes: #57876
r? @oli-obk