Specify the target limits for target-specific ABIs #2000
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This specifies the restrictions on which target-specific ABIs are available. These are defined in `rustc` in [`is_abi_supported`] and the associated `AbiMap`. Some of these are currently only implemented as future incompatibly warnings via `unsupported_calling_conventions`. I'm fine with just not acknowledging that and saying what the intent is. This is split off from rust-lang#1948 with the intent of separating out the changes. [`is_abi_supported`]: https://github.com/rust-lang/rust/blob/eec6bd9d69832f57341c6de6a93fa7b9f47e2111/compiler/rustc_target/src/spec/mod.rs#L2610-L2613 Edited-by: TC
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traviscross
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The ABI list was using em dashes where it should use en dashes and contained some other typographical errors. Let's fix these.
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traviscross
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Sep 16, 2025
matthiaskrgr
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Sep 22, 2025
Update books ## rust-lang/book 1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6 2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC - Release trpl 0.3 (rust-lang/book#4505) ## rust-lang/reference 9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976 2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC - Document temporary scoping for destructuring assignments (rust-lang/reference#1992) - Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980) - update for more ABIs supporting c-variadics (rust-lang/reference#1936) - Fix incorrect span tag (rust-lang/reference#1995) - Remove strike attribute (rust-lang/reference#1997) - Specify the target limits for target-specific ABIs (rust-lang/reference#2000) - Remove tuple index carve out (rust-lang/reference#1966) - Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988) - Add support to grammar for single line comments (rust-lang/reference#1993) ## rust-lang/rust-by-example 1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f 2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC - Update unit testing output for additional test (rust-lang/rust-by-example#1958)
Zalathar
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Sep 23, 2025
Update books ## rust-lang/book 1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6 2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC - Release trpl 0.3 (rust-lang/book#4505) ## rust-lang/reference 9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976 2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC - Document temporary scoping for destructuring assignments (rust-lang/reference#1992) - Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980) - update for more ABIs supporting c-variadics (rust-lang/reference#1936) - Fix incorrect span tag (rust-lang/reference#1995) - Remove strike attribute (rust-lang/reference#1997) - Specify the target limits for target-specific ABIs (rust-lang/reference#2000) - Remove tuple index carve out (rust-lang/reference#1966) - Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988) - Add support to grammar for single line comments (rust-lang/reference#1993) ## rust-lang/rust-by-example 1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f 2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC - Update unit testing output for additional test (rust-lang/rust-by-example#1958)
Kobzol
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Update books ## rust-lang/book 1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6 2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC - Release trpl 0.3 (rust-lang/book#4505) ## rust-lang/reference 9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976 2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC - Document temporary scoping for destructuring assignments (rust-lang/reference#1992) - Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980) - update for more ABIs supporting c-variadics (rust-lang/reference#1936) - Fix incorrect span tag (rust-lang/reference#1995) - Remove strike attribute (rust-lang/reference#1997) - Specify the target limits for target-specific ABIs (rust-lang/reference#2000) - Remove tuple index carve out (rust-lang/reference#1966) - Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988) - Add support to grammar for single line comments (rust-lang/reference#1993) ## rust-lang/rust-by-example 1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f 2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC - Update unit testing output for additional test (rust-lang/rust-by-example#1958)
matthiaskrgr
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Sep 23, 2025
Update books ## rust-lang/book 1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6 2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC - Release trpl 0.3 (rust-lang/book#4505) ## rust-lang/reference 9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976 2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC - Document temporary scoping for destructuring assignments (rust-lang/reference#1992) - Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980) - update for more ABIs supporting c-variadics (rust-lang/reference#1936) - Fix incorrect span tag (rust-lang/reference#1995) - Remove strike attribute (rust-lang/reference#1997) - Specify the target limits for target-specific ABIs (rust-lang/reference#2000) - Remove tuple index carve out (rust-lang/reference#1966) - Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988) - Add support to grammar for single line comments (rust-lang/reference#1993) ## rust-lang/rust-by-example 1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f 2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC - Update unit testing output for additional test (rust-lang/rust-by-example#1958)
matthiaskrgr
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Sep 23, 2025
Update books ## rust-lang/book 1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6 2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC - Release trpl 0.3 (rust-lang/book#4505) ## rust-lang/reference 9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976 2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC - Document temporary scoping for destructuring assignments (rust-lang/reference#1992) - Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980) - update for more ABIs supporting c-variadics (rust-lang/reference#1936) - Fix incorrect span tag (rust-lang/reference#1995) - Remove strike attribute (rust-lang/reference#1997) - Specify the target limits for target-specific ABIs (rust-lang/reference#2000) - Remove tuple index carve out (rust-lang/reference#1966) - Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988) - Add support to grammar for single line comments (rust-lang/reference#1993) ## rust-lang/rust-by-example 1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f 2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC - Update unit testing output for additional test (rust-lang/rust-by-example#1958)
Zalathar
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Sep 24, 2025
Update books ## rust-lang/book 1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6 2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC - Release trpl 0.3 (rust-lang/book#4505) ## rust-lang/reference 9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976 2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC - Document temporary scoping for destructuring assignments (rust-lang/reference#1992) - Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980) - update for more ABIs supporting c-variadics (rust-lang/reference#1936) - Fix incorrect span tag (rust-lang/reference#1995) - Remove strike attribute (rust-lang/reference#1997) - Specify the target limits for target-specific ABIs (rust-lang/reference#2000) - Remove tuple index carve out (rust-lang/reference#1966) - Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988) - Add support to grammar for single line comments (rust-lang/reference#1993) ## rust-lang/rust-by-example 1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f 2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC - Update unit testing output for additional test (rust-lang/rust-by-example#1958)
rust-timer
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Sep 24, 2025
Rollup merge of #146898 - rustbot:docs-update, r=ehuss Update books ## rust-lang/book 1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6 2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC - Release trpl 0.3 (rust-lang/book#4505) ## rust-lang/reference 9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976 2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC - Document temporary scoping for destructuring assignments (rust-lang/reference#1992) - Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980) - update for more ABIs supporting c-variadics (rust-lang/reference#1936) - Fix incorrect span tag (rust-lang/reference#1995) - Remove strike attribute (rust-lang/reference#1997) - Specify the target limits for target-specific ABIs (rust-lang/reference#2000) - Remove tuple index carve out (rust-lang/reference#1966) - Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988) - Add support to grammar for single line comments (rust-lang/reference#1993) ## rust-lang/rust-by-example 1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f 2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC - Update unit testing output for additional test (rust-lang/rust-by-example#1958)
Muscraft
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Sep 24, 2025
Update books ## rust-lang/book 1 commits in 3e9dc46aa563ca0c53ec826c41b05f10c5915925..33f1af40cc44dde7e3e892f7a508e6f427d2cbc6 2025-09-15 16:10:14 UTC to 2025-09-15 16:10:14 UTC - Release trpl 0.3 (rust-lang/book#4505) ## rust-lang/reference 9 commits in b3ce60628c6f55ab8ff3dba9f3d20203df1c0dee..cc7247d8dfaef4c39000bb12c55c32ba5b5ba976 2025-09-20 10:26:26 UTC to 2025-09-08 18:07:29 UTC - Document temporary scoping for destructuring assignments (rust-lang/reference#1992) - Specify lifetime extension of `pin!` and `format_args!` arguments (rust-lang/reference#1980) - update for more ABIs supporting c-variadics (rust-lang/reference#1936) - Fix incorrect span tag (rust-lang/reference#1995) - Remove strike attribute (rust-lang/reference#1997) - Specify the target limits for target-specific ABIs (rust-lang/reference#2000) - Remove tuple index carve out (rust-lang/reference#1966) - Enable folding of chapter listing in navigation sidebar (rust-lang/reference#1988) - Add support to grammar for single line comments (rust-lang/reference#1993) ## rust-lang/rust-by-example 1 commits in dd26bc8e726dc2e73534c8972d4dccd1bed7495f..2c9b490d70e535cf166bf17feba59e594579843f 2025-09-18 22:28:52 UTC to 2025-09-18 22:28:52 UTC - Update unit testing output for additional test (rust-lang/rust-by-example#1958)
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This specifies the restrictions on which targets specific ABIs are available. These are defined in
rustcinis_abi_supportedand the associatedAbiMap.Some of these are currently only implemented as future-incompatible warnings via
unsupported_calling_conventions. I'm fine with just not acknowledging that, and saying what the intent is.This is split off from #1948 with the intent of separating out the changes.