Update LLVM coverage mapping format version supported by rustc #1267
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rust-lang/rust#91207 updates the coverage mapping format to Version 5 or 6, depending on the built-in version of LLVM (12 or 13, respectively). This change updates the dev guide to match the recent changes.
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Update books ## nomicon 1 commits in c6b4bf831e9a40aec34f53067d20634839a6778b..49681ea4a9fa81173dbe9ffed74b4d4a35eae9e3 2021-11-09 02:30:56 +0900 to 2021-11-24 16:27:28 +0900 - Clarify that drop flag fields only apply to older Rust versions (rust-lang/nomicon#324) ## reference 2 commits in c0f222da23568477155991d391c9ce918e381351..954f3d441ad880737a13e241108f791a4d2a38cd 2021-11-22 10:30:57 -0800 to 2021-11-29 11:11:30 -0800 - Say that bare trait objects are rejected in the 2021 edition (rust-lang/reference#1111) - Update 'Subtyping and Variance' example to use `dyn Trait` syntax (rust-lang/reference#1110) ## book 5 commits in a5e0c5b2c5f9054be3b961aea2c7edfeea591de8..5f9358faeb1f46e19b8a23a21e79fd7fe150491e 2021-11-19 17:06:19 -0500 to 2021-12-05 21:33:16 -0500 - 1.57 - Update to 1.56 - Snapshot of ch 11 for nostarch - Clarify how to check for an error in tests returning Result - Update book repo links for default branch rename ## rust-by-example 1 commits in 43f82530210b83cf888282b207ed13d5893da9b2..1ca6a7bd1d73edc4a3e6c7d6a40f5d4b66c1e517 2021-11-21 22:31:50 -0300 to 2021-11-23 17:48:53 -0300 - Removed `u32` at the end of ints (rust-lang/rust-by-example#1477) ## rustc-dev-guide 10 commits in a2fc9635029c04e692474965a6606f8e286d539a..a374e7d8bb6b79de45b92295d06b4ac0ef35bc09 2021-11-18 13:31:13 -0500 to 2021-12-03 09:26:47 -0800 - Update LLVM coverage mapping format version supported by rustc (rust-lang/rustc-dev-guide#1267) - Improve 'Running tests manually' section - Fix some links - Update for review comments. - Document rustfix-only-machine-applicable - Apply suggestions from pierwill - Document more compiletest headers. - make it compile with 1.56.0 no warning - make it compile with 1.56.0 - make it compile with 1.56.0 ## edition-guide 1 commits in 8e0ec8c77d8b28b86159fdee9d33a758225ecf9c..beea0a3cdc3885375342fd010f9ad658e6a5e09a 2021-11-12 06:30:23 -0800 to 2021-12-05 07:06:45 -0800 - Fix typo (neccesary -> necessary) (rust-lang/edition-guide#274)
matthiaskrgr
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to matthiaskrgr/rust
that referenced
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Dec 7, 2021
Update books ## nomicon 1 commits in c6b4bf831e9a40aec34f53067d20634839a6778b..49681ea4a9fa81173dbe9ffed74b4d4a35eae9e3 2021-11-09 02:30:56 +0900 to 2021-11-24 16:27:28 +0900 - Clarify that drop flag fields only apply to older Rust versions (rust-lang/nomicon#324) ## reference 2 commits in c0f222da23568477155991d391c9ce918e381351..954f3d441ad880737a13e241108f791a4d2a38cd 2021-11-22 10:30:57 -0800 to 2021-11-29 11:11:30 -0800 - Say that bare trait objects are rejected in the 2021 edition (rust-lang/reference#1111) - Update 'Subtyping and Variance' example to use `dyn Trait` syntax (rust-lang/reference#1110) ## book 5 commits in a5e0c5b2c5f9054be3b961aea2c7edfeea591de8..5f9358faeb1f46e19b8a23a21e79fd7fe150491e 2021-11-19 17:06:19 -0500 to 2021-12-05 21:33:16 -0500 - 1.57 - Update to 1.56 - Snapshot of ch 11 for nostarch - Clarify how to check for an error in tests returning Result - Update book repo links for default branch rename ## rust-by-example 1 commits in 43f82530210b83cf888282b207ed13d5893da9b2..1ca6a7bd1d73edc4a3e6c7d6a40f5d4b66c1e517 2021-11-21 22:31:50 -0300 to 2021-11-23 17:48:53 -0300 - Removed `u32` at the end of ints (rust-lang/rust-by-example#1477) ## rustc-dev-guide 10 commits in a2fc9635029c04e692474965a6606f8e286d539a..a374e7d8bb6b79de45b92295d06b4ac0ef35bc09 2021-11-18 13:31:13 -0500 to 2021-12-03 09:26:47 -0800 - Update LLVM coverage mapping format version supported by rustc (rust-lang/rustc-dev-guide#1267) - Improve 'Running tests manually' section - Fix some links - Update for review comments. - Document rustfix-only-machine-applicable - Apply suggestions from pierwill - Document more compiletest headers. - make it compile with 1.56.0 no warning - make it compile with 1.56.0 - make it compile with 1.56.0 ## edition-guide 1 commits in 8e0ec8c77d8b28b86159fdee9d33a758225ecf9c..beea0a3cdc3885375342fd010f9ad658e6a5e09a 2021-11-12 06:30:23 -0800 to 2021-12-05 07:06:45 -0800 - Fix typo (neccesary -> necessary) (rust-lang/edition-guide#274)
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rust-lang/rust#91207 updates the coverage mapping format to Version 5 or
6, depending on the built-in version of LLVM (12 or 13, respectively).
This change updates the dev guide to match the recent changes.
(Note, this PR replaces #1235 with slightly more up-to-date description of the new behavior.)
r? @tmandry