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| author | Philip Herron <philip.herron@embecosm.com> | 2022-05-04 13:48:03 +0100 |
|---|---|---|
| committer | Philip Herron <philip.herron@embecosm.com> | 2022-05-05 11:43:40 +0100 |
| commit | f5bceb679420b999aa63c1b34dd0e0075cf9c5fd (patch) | |
| tree | f6ad62677bccf0ee131b9a73db11d016149fce6e /gcc | |
| parent | 285aabdd3b2d8ee7c158eee34241ba52a31b19d3 (diff) | |
| download | gcc-f5bceb679420b999aa63c1b34dd0e0075cf9c5fd.zip gcc-f5bceb679420b999aa63c1b34dd0e0075cf9c5fd.tar.gz gcc-f5bceb679420b999aa63c1b34dd0e0075cf9c5fd.tar.bz2 | |
Fix size used in unsized adjustments
When we coerce from an array to a slice we take the full capacity of the
array as the size to the FatPtr slice object but this was off by one. This
The TYPE_MAX_VALUE is not the correct method of accessing this but instead
it needs to take into account other values to get the correct HOST_WIDE_INT
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/rust/backend/rust-compile-expr.cc | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/gcc/rust/backend/rust-compile-expr.cc b/gcc/rust/backend/rust-compile-expr.cc index 41f8c0a..1cf4e3d 100644 --- a/gcc/rust/backend/rust-compile-expr.cc +++ b/gcc/rust/backend/rust-compile-expr.cc @@ -1348,7 +1348,13 @@ HIRCompileBase::resolve_unsized_adjustment (Resolver::Adjustment &adjustment, // fetch the size from the domain tree domain = TYPE_DOMAIN (expr_type); - tree size = TYPE_MAX_VALUE (domain); + unsigned HOST_WIDE_INT array_size + = wi::ext (wi::to_offset (TYPE_MAX_VALUE (domain)) + - wi::to_offset (TYPE_MIN_VALUE (domain)) + 1, + TYPE_PRECISION (TREE_TYPE (domain)), + TYPE_SIGN (TREE_TYPE (domain))) + .to_uhwi (); + tree size = build_int_cst (size_type_node, array_size); return ctx->get_backend ()->constructor_expression (fat_pointer, false, {data, size}, -1, locus); |