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Mem uninit doc ptr drop #56970

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merged 3 commits into from
Dec 23, 2018
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Firstyear
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Extend the mem::uninitialized documentation to account for partially initialized arrays and how to correctly handle these. These are used in some datastructures (trees for example) or in FFI.

r? @Manishearth

@rust-highfive rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Dec 19, 2018
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The job x86_64-gnu-llvm-6.0 of your PR failed on Travis (raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.
travis_time:end:05454486:start=1545187482086206592,finish=1545187541815966755,duration=59729760163
$ git checkout -qf FETCH_HEAD
travis_fold:end:git.checkout

Encrypted environment variables have been removed for security reasons.
See https://docs.travis-ci.com/user/pull-requests/#pull-requests-and-security-restrictions
$ export SCCACHE_BUCKET=rust-lang-ci-sccache2
$ export SCCACHE_REGION=us-west-1
Setting environment variables from .travis.yml
$ export IMAGE=x86_64-gnu-llvm-6.0
---

[00:03:41] travis_fold:start:tidy
travis_time:start:tidy
tidy check
[00:03:41] tidy error: /checkout/src/libcore/mem.rs:617: line longer than 100 chars
[00:03:43] some tidy checks failed
[00:03:43] 
[00:03:43] 
[00:03:43] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/tidy" "/checkout/src" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "--no-vendor" "--quiet"
[00:03:43] 
[00:03:43] 
[00:03:43] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test src/tools/tidy
[00:03:43] Build completed unsuccessfully in 0:00:45
[00:03:43] Build completed unsuccessfully in 0:00:45
[00:03:43] Makefile:79: recipe for target 'tidy' failed
[00:03:43] make: *** [tidy] Error 1
The command "stamp sh -x -c "$RUN_SCRIPT"" exited with 2.
travis_time:start:12dd683e
$ date && (curl -fs --head https://google.com | grep ^Date: | sed 's/Date: //g' || true)
Wed Dec 19 02:49:33 UTC 2018
---
travis_time:end:023f3028:start=1545187773701690394,finish=1545187773706967821,duration=5277427
travis_fold:end:after_failure.3
travis_fold:start:after_failure.4
travis_time:start:025e00de
$ ln -s . checkout && for CORE in obj/cores/core.*; do EXE=$(echo $CORE | sed 's|obj/cores/core\.[0-9]*\.!checkout!\(.*\)|\1|;y|!|/|'); if [ -f "$EXE" ]; then printf travis_fold":start:crashlog\n\033[31;1m%s\033[0m\n" "$CORE"; gdb --batch -q -c "$CORE" "$EXE" -iex 'set auto-load off' -iex 'dir src/' -iex 'set sysroot .' -ex bt -ex q; echo travis_fold":"end:crashlog; fi; done || true
travis_fold:end:after_failure.4
travis_fold:start:after_failure.5
travis_time:start:0123c684
travis_time:start:0123c684
$ cat ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers || true
cat: ./obj/build/x86_64-unknown-linux-gnu/native/asan/build/lib/asan/clang_rt.asan-dynamic-i386.vers: No such file or directory
travis_fold:end:after_failure.5
travis_fold:start:after_failure.6
travis_time:start:20dc2772
$ dmesg | grep -i kill

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

@Firstyear
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I've updated based on your feedback @Manishearth, I think the travis build failure is not related to this work.

@Manishearth
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It's related: [00:03:41] tidy error: /checkout/src/libcore/mem.rs:617: line longer than 100 chars

@Firstyear
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I apologise, I really didn't see that error. I was staring at the log for quite a while :( Fixed and pushing.

@Manishearth
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@bors r+

thanks!

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bors commented Dec 19, 2018

📌 Commit b2d8040 has been approved by Manishearth

@bors bors added S-waiting-on-bors Status: Waiting on bors to run and complete tests. Bors will change the label on completion. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Dec 19, 2018
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@bors rollup

pietroalbini added a commit to pietroalbini/rust that referenced this pull request Dec 20, 2018
…r=Manishearth

Mem uninit doc ptr drop

Extend the mem::uninitialized documentation to account for partially initialized arrays and how to correctly handle these. These are used in some datastructures (trees for example) or in FFI.

r? @Manishearth
Mark-Simulacrum added a commit to Mark-Simulacrum/rust that referenced this pull request Dec 21, 2018
…r=Manishearth

Mem uninit doc ptr drop

Extend the mem::uninitialized documentation to account for partially initialized arrays and how to correctly handle these. These are used in some datastructures (trees for example) or in FFI.

r? @Manishearth
pietroalbini added a commit to pietroalbini/rust that referenced this pull request Dec 21, 2018
…r=Manishearth

Mem uninit doc ptr drop

Extend the mem::uninitialized documentation to account for partially initialized arrays and how to correctly handle these. These are used in some datastructures (trees for example) or in FFI.

r? @Manishearth
bors added a commit that referenced this pull request Dec 21, 2018
Rollup of 20 pull requests

Successful merges:

 - #56802 (Add DoubleEndedIterator::nth_back)
 - #56842 (Add unstable VecDeque::rotate_{left|right})
 - #56869 (Reduce search-index.js size)
 - #56887 (Disable field reordering for repr(int).)
 - #56892 (rustc: Update Clang used to build LLVM on Linux)
 - #56909 (static eval: Do not ICE on layout size overflow)
 - #56914 (Ignore ui/target-feature-gate on sparc, sparc64, powerpc, powerpc64 and powerpc64le)
 - #56917 (Simplify MIR generation for logical operations)
 - #56919 (Remove a wrong multiplier on relocation offset computation)
 - #56933 (Add --progress to git submodule commands in x.py)
 - #56941 (deny intra-doc link resolution failures in libstd)
 - #56964 (Remove `TokenStream::JointTree`.)
 - #56970 (Mem uninit doc ptr drop)
 - #56973 (make basic CTFE tracing available on release builds)
 - #56979 (Adding unwinding support for x86_64_fortanix_unknown_sgx target.)
 - #56981 (miri: allocation is infallible)
 - #56984 (A few tweaks to dropck_outlives)
 - #56989 (Fix compiletest `trim` deprecation warnings)
 - #56992 (suggest similar lint names for unknown lints)
 - #57002 (Stabilize Vec(Deque)::resize_with)

Failed merges:

r? @ghost
bors added a commit that referenced this pull request Dec 21, 2018
Rollup of 20 pull requests

Successful merges:

 - #56802 (Add DoubleEndedIterator::nth_back)
 - #56842 (Add unstable VecDeque::rotate_{left|right})
 - #56869 (Reduce search-index.js size)
 - #56887 (Disable field reordering for repr(int).)
 - #56892 (rustc: Update Clang used to build LLVM on Linux)
 - #56909 (static eval: Do not ICE on layout size overflow)
 - #56914 (Ignore ui/target-feature-gate on sparc, sparc64, powerpc, powerpc64 and powerpc64le)
 - #56917 (Simplify MIR generation for logical operations)
 - #56919 (Remove a wrong multiplier on relocation offset computation)
 - #56933 (Add --progress to git submodule commands in x.py)
 - #56941 (deny intra-doc link resolution failures in libstd)
 - #56964 (Remove `TokenStream::JointTree`.)
 - #56970 (Mem uninit doc ptr drop)
 - #56973 (make basic CTFE tracing available on release builds)
 - #56979 (Adding unwinding support for x86_64_fortanix_unknown_sgx target.)
 - #56981 (miri: allocation is infallible)
 - #56984 (A few tweaks to dropck_outlives)
 - #56989 (Fix compiletest `trim` deprecation warnings)
 - #56992 (suggest similar lint names for unknown lints)
 - #57002 (Stabilize Vec(Deque)::resize_with)

Failed merges:

r? @ghost
Centril added a commit to Centril/rust that referenced this pull request Dec 22, 2018
…r=Manishearth

Mem uninit doc ptr drop

Extend the mem::uninitialized documentation to account for partially initialized arrays and how to correctly handle these. These are used in some datastructures (trees for example) or in FFI.

r? @Manishearth
kennytm added a commit to kennytm/rust that referenced this pull request Dec 22, 2018
…r=Manishearth

Mem uninit doc ptr drop

Extend the mem::uninitialized documentation to account for partially initialized arrays and how to correctly handle these. These are used in some datastructures (trees for example) or in FFI.

r? @Manishearth
bors added a commit that referenced this pull request Dec 22, 2018
Rollup of 25 pull requests

Successful merges:

 - #56802 (Add DoubleEndedIterator::nth_back)
 - #56909 (static eval: Do not ICE on layout size overflow)
 - #56914 (Ignore ui/target-feature-gate on sparc, sparc64, powerpc, powerpc64 and powerpc64le)
 - #56919 (Remove a wrong multiplier on relocation offset computation)
 - #56933 (Add --progress to git submodule commands in x.py)
 - #56936 (rename div_euc -> div_euclid, and mod_euc -> rem_euclid)
 - #56941 (deny intra-doc link resolution failures in libstd)
 - #56945 (Fix rustdoc-js tests)
 - #56967 (Replace current crate's searchIndex when regenerating)
 - #56970 (Mem uninit doc ptr drop)
 - #56973 (make basic CTFE tracing available on release builds)
 - #56979 (Adding unwinding support for x86_64_fortanix_unknown_sgx target.)
 - #56981 (miri: allocation is infallible)
 - #56984 (A few tweaks to dropck_outlives)
 - #56989 (Fix compiletest `trim` deprecation warnings)
 - #56992 (suggest similar lint names for unknown lints)
 - #57002 (Stabilize Vec(Deque)::resize_with)
 - #57011 (rustdoc: add new CLI flag to load static files from a different location)
 - #57027 (Optimize away a move)
 - #57034 (Inline tweaks)
 - #57039 (Update migrate warning wording.)
 - #57040 (Fix feature gate to point to 1.32.0 for `path_from_str`)
 - #57049 (Stabilize #[repr(packed(N))])
 - #57050 (Fixed typo in HashMap documentation)
 - #57052 (Fix stabilization version numbers (exhaustive_integer_patterns + macro_literal_matcher))
@bors bors merged commit b2d8040 into rust-lang:master Dec 23, 2018
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5 participants