Rollup of 16 pull requests #47900
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Rollup of 16 pull requests #47900
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While testing rust-lang#47655 I was able to make the compiler panic when it's compiled with debug assertions: ```shell > rustc /dev/null --crate-type proc-macro error: internal compiler error: unexpected panic note: the compiler unexpectedly panicked. this is a bug. note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports note: rustc 1.25.0-dev running on x86_64-apple-darwin note: run with `RUST_BACKTRACE=1` for a backtrace thread 'rustc' panicked at 'attempt to subtract with overflow', librustc_errors/emitter.rs:287:49 ``` Without debug assertions the following warning is emitted: ```shell > rustc /dev/null --crate-type proc-macro warning: unused variable: `registrar` --> /dev/null:0:1 | | = note: #[warn(unused_variables)] on by default = note: to avoid this warning, consider using `_registrar` instead ``` The panic is due to the unused variable warning being spanned to `/dev/null:0:1`. When `render_source_line` subtracts 1 from the line number to look up the source line it panics due to underflow. Without debug assertions this would wrap and cause us to return a blank string instead. Fix by explicitly testing for 0 and exiting early. I'm unsure how to automatically test this now that rust-lang#46655 has been approved.
If the original name is uppercase, use camel case. Otherwise, use snake case.
On MIPS, error number 98 is not EADDRINUSE (it is EPROTOTYPE). To fix the resulting test failure this causes, use a more portable error number in the example documentation. EINVAL shold be more reliable because it was defined in the original Unix as 22 so hopefully most derivatives have defined it the same way.
This copies what clang does. There is a long explanation as to why this is needed in the clang source (tools/clang/lib/Basic/Targets/Mips.h).
This is a test of `target_feature`, which needs a rust-specific patch to LLVM to add `MCSubtargetInfo::getFeatureTable()`.
I was testing out the tip support to see what's going on with wasm, and this was I believe the only issue encountered with LLVM 7 support so far.
This commit adds a new option to target specifictions to specify that symbols should be "hidden" visibility by default in LLVM. While there are no existing targets that take advantage of this the `wasm32-unknown-unknown` target will soon start to use this visibility. The LLD linker currently interprets `hidden` as "don't export this from the wasm module" which is what we want for 90% of our functions. While the LLD linker does have a "export this symbol" argument which is what we use for other linkers, it was also somewhat easier to do this change instead which'll involve less arguments flying around. Additionally there's no need for non-`hidden` visibility for most of our symbols! This change should not immediately impact the wasm targets as-is, but rather this is laying the foundations for soon integrating LLD as a linker for wasm code.
Since MSP430 doesn't meaningfully support faulting on illegal instructions, LLVM generates a call to abort() function instead of a trap instruction. Such calls are 4 bytes long, and that is too much overhead for such small target.
…ochenkov use correct casing for rename suggestions If the original name is uppercase, use camel case. Otherwise, use snake case.
Marked Debug implementations for primitive types as #[inline] Change for issue rust-lang#47792.
Fix regression: account for trait methods in arg count mismatch error Fixed rust-lang#47706 (rust-lang#47706 (comment)) Original PR rust-lang#47747 missed methods on trait definitions. This edit was done in GitHub. I think I got the signature of the variant right, going by the ICE debug output and the other cases above.
…dtolnay std: use more portable error number in from_raw_os_error docs On MIPS, error number 98 is not `EADDRINUSE` (it is `EPROTOTYPE`). To fix the resulting test failure this causes, use a more portable error number in the example documentation. `EINVAL` shold be more reliable because it was defined in the original Unix as 22 so hopefully most derivatives have defined it the same way.
rustc_trans: clobber $1 (aka $at) on mips This copies what clang does. There is a long explanation as to why this is needed in the clang source (tools/clang/lib/Basic/Targets/Mips.h).
…or, r=nikomatsakis Update associated constants error message Fixes rust-lang#47570.
Ignore run-pass/sse2 when using system LLVM This is a test of `target_feature`, which needs a rust-specific patch to LLVM to add `MCSubtargetInfo::getFeatureTable()`.
rustc: Add some defines for LLVM 7 compat I was testing out the tip support to see what's going on with wasm, and this was I believe the only issue encountered with LLVM 7 support so far.
…, r=cramertj rustc: Add an option to default hidden visibility This commit adds a new option to target specifictions to specify that symbols should be "hidden" visibility by default in LLVM. While there are no existing targets that take advantage of this the `wasm32-unknown-unknown` target will soon start to use this visibility. The LLD linker currently interprets `hidden` as "don't export this from the wasm module" which is what we want for 90% of our functions. While the LLD linker does have a "export this symbol" argument which is what we use for other linkers, it was also somewhat easier to do this change instead which'll involve less arguments flying around. Additionally there's no need for non-`hidden` visibility for most of our symbols! This change should not immediately impact the wasm targets as-is, but rather this is laying the foundations for soon integrating LLD as a linker for wasm code.
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⌛ Testing commit 2eb04352bf93e990e349e45fc26068c0bdcec3ca with merge 8077b54247313632e74573cbd0ff1ff630860fbe... |
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💔 Test failed - status-appveyor |
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Hmm what? |
Adding ICH to the glossary. Fixes rust-lang#47782.
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📌 Commit 64fc9d2 has been approved by |
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⌛ Testing commit 64fc9d2 with merge dc136553be02e5f20643e9239c2ef98fef252273... |
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💔 Test failed - status-appveyor |
Right now this directory is located under: $sysroot/lib/rustlib/$target/lib/codegen-backends but after seeing what we do in a few other places it seems that a more appropriate location would be: $sysroot/lib/rustlib/$target/codegen-backends so this commit moves it!
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🤔 I don't see why there would be many timed out jobs. Assuming spurious. |
…source-line, r=estebank Avoid underflow in render_source_line While testing rust-lang#47655 I was able to make the compiler panic when it's compiled with debug assertions: ```shell > rustc /dev/null --crate-type proc-macro error: internal compiler error: unexpected panic note: the compiler unexpectedly panicked. this is a bug. note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports note: rustc 1.25.0-dev running on x86_64-apple-darwin note: run with `RUST_BACKTRACE=1` for a backtrace thread 'rustc' panicked at 'attempt to subtract with overflow', librustc_errors/emitter.rs:287:49 ``` Without debug assertions the following warning is emitted: ```shell > rustc /dev/null --crate-type proc-macro warning: unused variable: `registrar` --> /dev/null:0:1 | | = note: #[warn(unused_variables)] on by default = note: to avoid this warning, consider using `_registrar` instead ``` The panic is due to the unused variable warning being spanned to `/dev/null:0:1`. When `render_source_line` subtracts 1 from the line number to look up the source line it panics due to underflow. Without debug assertions this would wrap and cause us to return a blank string instead. Fix by explicitly testing for 0 and exiting early. I'm unsure how to automatically test this now that rust-lang#46655 has been approved.
… r=alexcrichton rustc: Move location of `codegen-backends` dir Right now this directory is located under: ``` $sysroot/lib/rustlib/$target/lib/codegen-backends ``` but after seeing what we do in a few other places it seems that a more appropriate location would be: ``` $sysroot/lib/rustlib/$target/codegen-backends ``` so this commit moves it!
Fix ICE when reading non-UTF-8 input from stdin Fixes rust-lang#22387.
Specialize StepBy::nth This allows optimizations of implementations of the inner iterator's `.nth` method.
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📌 Commit af95302 has been approved by |
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☀️ Test successful - status-appveyor, status-travis |
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codegen-backendsdir #47893, Fix ICE when reading non-UTF-8 input from stdin #47895, Specialize StepBy::nth #47552