Add loops to doc list of things not stable in const fn #61518

czipperz · 2019-06-04T14:20:31Z

rust-highfive · 2019-06-04T14:20:36Z

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rust-highfive · 2019-06-04T14:41:39Z

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.

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travis_time:end:16259ba6:start=1559658097696605921,finish=1559658186654318424,duration=88957712503
$ 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
$ export GCP_CACHE_BUCKET=rust-lang-ci-cache
$ export AWS_ACCESS_KEY_ID=AKIA46X5W6CZEJZ6XT55
---

[00:04:54] travis_fold:start:tidy
travis_time:start:tidy
tidy check
[00:04:55] tidy error: /checkout/src/librustc_mir/transform/qualify_min_const_fn.rs:302: line longer than 100 chars
[00:04:55] tidy error: /checkout/src/test/ui/consts/single_variant_match_ice.rs:18: line longer than 100 chars
[00:04:59] some tidy checks failed
[00:04:59] 
[00:04:59] 
[00:04:59] 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"
[00:04:59] 
[00:04:59] 
[00:04:59] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test src/tools/tidy
[00:04:59] Build completed unsuccessfully in 0:01:10
---
travis_time:end:14beffc8:start=1559658496971012938,finish=1559658496975710709,duration=4697771
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travis_time:start:007e587c
$ 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
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travis_time:start:07e2be84
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$ 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:1ba51308
$ 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)

zackmdavis

CI is complaining about line length.

tidy check
[00:04:55] tidy error: /checkout/src/librustc_mir/transform/qualify_min_const_fn.rs:302: line longer than 100 chars
[00:04:55] tidy error: /checkout/src/test/ui/consts/single_variant_match_ice.rs:18: line longer than 100 chars
[00:04:59] some tidy checks failed

zackmdavis · 2019-06-04T15:17:54Z

src/test/ui/consts/single_variant_match_ice.rs

@@ -15,7 +15,7 @@ impl Foo {
        use self::Foo::*;

        match *self {
-            Prob => 0x1, //~ ERROR `if`, `match`, `&&` and `||` are not stable in const fn
+            Prob => 0x1, //~ ERROR `if`, `match`, `while`, `for`, `loop`, `&&` and `||` are not stable in const fn


move expectation comment to the next line and use the //~^ notation get around tidy

zackmdavis · 2019-06-04T15:18:24Z

src/librustc_mir/transform/qualify_min_const_fn.rs

@@ -299,7 +299,7 @@ fn check_terminator(

        TerminatorKind::FalseEdges { .. } | TerminatorKind::SwitchInt { .. } => Err((
            span,
-            "`if`, `match`, `&&` and `||` are not stable in const fn".into(),
+            "`if`, `match`, `while`, `for`, `loop`, `&&` and `||` are not stable in const fn".into(),


use \ continuation to satisfy tidy?

czipperz · 2019-06-06T05:12:20Z

@zackmdavis Thanks for the feedback. Honestly I think this error message is too long. What do you think about trying to reduce the length? I'm trying to bikeshed some new messages. Maybe:

conditional expressions are not stable in const fn

Centril · 2019-06-10T01:00:32Z

@czipperz I think:

loops and conditional expressions are not stable in const fn

would do.

r? @Centril r=me with that

src/librustc_mir/transform/qualify_min_const_fn.rs

czipperz · 2019-06-10T19:46:36Z

@Centril done

Centril · 2019-06-11T12:11:29Z

@bors r+ rollup

bors · 2019-06-11T12:11:30Z

📌 Commit 8e7ade8 has been approved by Centril

…s, r=Centril Add loops to doc list of things not stable in const fn Closes rust-lang#61508

@ghost

Rollup of 11 pull requests Successful merges: - #61518 (Add loops to doc list of things not stable in const fn) - #61526 (move some tests into subfolders) - #61550 (Windows 10 SDK is also required now.) - #61606 (Remove some legacy proc macro flavors) - #61652 (Mention slice patterns in array) - #61686 (librustc_errors: Add some more documentation) - #61698 (typeck: Fix const generic in repeat param ICE.) - #61707 (Azure: retry failed awscli installs) - #61715 (make sure make_ascii_lowercase actually leaves upper-case non-ASCII characters alone) - #61724 (core: use memcmp optimization for 128 bit integer slices) - #61726 (Use `for_each` in `Iterator::partition`) Failed merges: r? @ghost

@ghost

Rollup of 11 pull requests Successful merges: - #61518 (Add loops to doc list of things not stable in const fn) - #61526 (move some tests into subfolders) - #61550 (Windows 10 SDK is also required now.) - #61606 (Remove some legacy proc macro flavors) - #61652 (Mention slice patterns in array) - #61686 (librustc_errors: Add some more documentation) - #61698 (typeck: Fix const generic in repeat param ICE.) - #61707 (Azure: retry failed awscli installs) - #61715 (make sure make_ascii_lowercase actually leaves upper-case non-ASCII characters alone) - #61724 (core: use memcmp optimization for 128 bit integer slices) - #61726 (Use `for_each` in `Iterator::partition`) Failed merges: r? @ghost

rust-highfive assigned zackmdavis Jun 4, 2019

rust-highfive added the S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. label Jun 4, 2019

zackmdavis reviewed Jun 4, 2019

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rust-highfive assigned Centril and unassigned zackmdavis Jun 10, 2019

Centril added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. and removed S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. labels Jun 10, 2019

czipperz force-pushed the const-fn-doc-disallow-loops branch from 6488a59 to 8ba8534 Compare June 10, 2019 01:29

Centril reviewed Jun 10, 2019

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src/librustc_mir/transform/qualify_min_const_fn.rs Outdated Show resolved Hide resolved

Reword const fn conditional and loop error text

8e7ade8

czipperz force-pushed the const-fn-doc-disallow-loops branch from 8ba8534 to 8e7ade8 Compare June 10, 2019 02:02

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-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jun 11, 2019

Centril added a commit to Centril/rust that referenced this pull request Jun 11, 2019

Rollup merge of rust-lang#61518 - czipperz:const-fn-doc-disallow-loop…

17393b2

…s, r=Centril Add loops to doc list of things not stable in const fn Closes rust-lang#61508

Centril mentioned this pull request Jun 11, 2019

Rollup of 11 pull requests #61741

Merged

bors merged commit 8e7ade8 into rust-lang:master Jun 12, 2019

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Add loops to doc list of things not stable in const fn #61518

Add loops to doc list of things not stable in const fn #61518

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czipperz commented Jun 4, 2019

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czipperz commented Jun 6, 2019 •

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Add loops to doc list of things not stable in const fn #61518

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