Nightly: LTO with share-generics causes undefined symbols when using build-std #96486
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-Zbuild-std
Unstable Cargo option: Compile the standard library yourself.
C-bug
Category: This is a bug.
Comments
You can use cargo-bisect-rustc to narrow it down. |
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This occurs for me on
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VisualEhrmanntraut
changed the title
VisualEhrmanntraut
changed the title
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It seems like this might be caused by the numerous PRs like: #94657 which caused more code to start depending on |
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It seems that this is also causing build issues for me in compiler-builtins: |
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This could be caused by #95604. It's possible that |
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Running |
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@theCapypara |
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The |
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Ah, ok, then that's not the reason. |
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If it's of any help in finding the root of this issues, here's the profile settings: And here's the target json I'm using. The linker scripts mostly just define symbols and define a particular layout for the final binary: {
"abi": "eabi",
"arch": "arm",
"cpu": "arm946e-s",
"crt-static-respected": true,
"data-layout": "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64",
"executables": true,
"features": "+soft-float,+strict-align",
"linker": "arm-none-eabi-gcc",
"linker-flavor": "gcc",
"llvm-target": "armv5te-none-eabi",
"panic-strategy": "abort",
"max-atomic-width": 0,
"relocation-model": "static",
"target-endian": "little",
"target-pointer-width": "32",
"target-c-int-width": "32",
"disable-redzone": true,
"linker-is-gnu": true,
"atomic-cas": false,
"has-rpath": false,
"vendor": "nintendo",
"env": "newlib",
"dynamic-linking": false,
"pre-link-args": {
"gcc": [
"-T", "../symbols/generated_NA.ld",
"-T", "../symbols/custom_NA.ld",
"-T", "../linker.ld"
]
},
"post-link-args": {
"gcc": [
"-lgcc", "-g", "-marm", "-mno-thumb-interwork",
"-Xlinker", "-no-enum-size-warning", "-nostdlib"
]
}
}The linker is provided as part of DevkitPro's DevkitARM. At the moment I'm working around this issue by using a custom fork of |
Experiencing the same issue with similar profile targeting uefi |
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@theCapypara I've had the same issue targeting a mips64 platform. As a workaround, turning off |
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Thanks! However we only have 32kb to work with, so it's not really an option. I have a fork here of compiler_builtins that people might find helpful in this situation: Obvs. it's just a complete hack, but for now it works for us. |
This was referenced May 20, 2022
yvt
added a commit
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May 24, 2022
Work-around for [rust-lang/rust#96486][1]. [1]: rust-lang/rust#96486
13 tasks
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I'v had same issue on i686-pc-windows-msvc. |
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I've also encountred this while compiling for arm-linux-gnueabi with lto+build-std+optimize-s/z |
danbev
added a commit
to danbev/drogue-device
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Jun 28, 2022
This commit suggest temporarily disabling LTO for
stm32l0/lora-discovery as it currently fails to build and produces the
following error:
$ cargo b --release
Compiling drogue-device v0.1.0 (/home/danielbevenius/work/drougue/drogue-device/device)
Compiling drogue-lorawan-app v0.1.0 (/home/danielbevenius/work/drougue/drogue-device/examples/apps/lorawan)
Compiling lora-discovery v0.1.0 (/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery)
error: linking with `rust-lld` failed: exit status: 1
|
= note: "rust-lld" "-flavor" "gnu" "/tmp/rustcE0o7dO/symbols.o" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/lora_discovery-121397784992859f.lora_discovery.44cd7467-cgu.0.rcgu.o" "--as-needed" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/release/deps" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/cortex-m-e6b764a750418f37/out" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/cortex-m-rt-25cd07c968480796/out" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/defmt-c9d88f9f0247898b/out" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/stm32-metapac-79ebc769f1fe4173/out/src/chips/stm32l072cz" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/stm32-metapac-79ebc769f1fe4173/out/src/chips/stm32l072cz/memory_x/" "-L" "/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/thumbv6m-none-eabi/lib" "-Bstatic" "/tmp/rustcE0o7dO/libcortex_m_rt-83f9336232275dfb.rlib" "--start-group" "/tmp/rustcE0o7dO/libcortex_m-99a7722181c20220.rlib" "--end-group" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib" "-Bdynamic" "--eh-frame-hdr" "-znoexecstack" "-L" "/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/thumbv6m-none-eabi/lib" "-o" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/lora_discovery-121397784992859f" "--gc-sections" "--nmagic" "-Tlink.x" "-Tdefmt.x"
= note: rust-lld: error: undefined symbol: core::intrinsics::const_eval_select::hbf83374ba4cb02aa
>>> referenced by f64.rs:934 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/f64.rs:934)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::cmp::cmp::hf7fe6cc7136cc059) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
>>> referenced by f64.rs:934 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/f64.rs:934)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::cmp::cmp::hf7fe6cc7136cc059) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
>>> referenced by f64.rs:934 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/f64.rs:934)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::cmp::cmp::hf7fe6cc7136cc059) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
>>> referenced 11 more times
rust-lld: error: undefined symbol: core::intrinsics::const_eval_select::h4c3f1d9ac29a50b4
>>> referenced by f64.rs:1027 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/f64.rs:1027)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::conv::__floatunsidf::hf57927b41d126d62) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
>>> referenced by uint_macros.rs:0 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/uint_macros.rs:0)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::div::__divdf3::h3f7dd1a712655361) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
error: could not compile `lora-discovery` due to previous error
I found the following open issue which looks like it is related:
rust-lang/rust#96486
lulf
pushed a commit
to drogue-iot/drogue-device
that referenced
this issue
Jun 28, 2022
This commit suggest temporarily disabling LTO for
stm32l0/lora-discovery as it currently fails to build and produces the
following error:
$ cargo b --release
Compiling drogue-device v0.1.0 (/home/danielbevenius/work/drougue/drogue-device/device)
Compiling drogue-lorawan-app v0.1.0 (/home/danielbevenius/work/drougue/drogue-device/examples/apps/lorawan)
Compiling lora-discovery v0.1.0 (/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery)
error: linking with `rust-lld` failed: exit status: 1
|
= note: "rust-lld" "-flavor" "gnu" "/tmp/rustcE0o7dO/symbols.o" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/lora_discovery-121397784992859f.lora_discovery.44cd7467-cgu.0.rcgu.o" "--as-needed" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/release/deps" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/cortex-m-e6b764a750418f37/out" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/cortex-m-rt-25cd07c968480796/out" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/defmt-c9d88f9f0247898b/out" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/stm32-metapac-79ebc769f1fe4173/out/src/chips/stm32l072cz" "-L" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/build/stm32-metapac-79ebc769f1fe4173/out/src/chips/stm32l072cz/memory_x/" "-L" "/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/thumbv6m-none-eabi/lib" "-Bstatic" "/tmp/rustcE0o7dO/libcortex_m_rt-83f9336232275dfb.rlib" "--start-group" "/tmp/rustcE0o7dO/libcortex_m-99a7722181c20220.rlib" "--end-group" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib" "-Bdynamic" "--eh-frame-hdr" "-znoexecstack" "-L" "/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/thumbv6m-none-eabi/lib" "-o" "/home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/lora_discovery-121397784992859f" "--gc-sections" "--nmagic" "-Tlink.x" "-Tdefmt.x"
= note: rust-lld: error: undefined symbol: core::intrinsics::const_eval_select::hbf83374ba4cb02aa
>>> referenced by f64.rs:934 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/f64.rs:934)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::cmp::cmp::hf7fe6cc7136cc059) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
>>> referenced by f64.rs:934 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/f64.rs:934)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::cmp::cmp::hf7fe6cc7136cc059) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
>>> referenced by f64.rs:934 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/f64.rs:934)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::cmp::cmp::hf7fe6cc7136cc059) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
>>> referenced 11 more times
rust-lld: error: undefined symbol: core::intrinsics::const_eval_select::h4c3f1d9ac29a50b4
>>> referenced by f64.rs:1027 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/f64.rs:1027)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::conv::__floatunsidf::hf57927b41d126d62) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
>>> referenced by uint_macros.rs:0 (/home/danielbevenius/.rustup/toolchains/nightly-2022-05-24-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/core/src/num/uint_macros.rs:0)
>>> compiler_builtins-6326b44316fd805a.compiler_builtins.42fdec05-cgu.0.rcgu.o:(compiler_builtins::float::div::__divdf3::h3f7dd1a712655361) in archive /home/danielbevenius/work/drougue/drogue-device/examples/stm32l0/lora-discovery/target/thumbv6m-none-eabi/release/deps/libcompiler_builtins-6326b44316fd805a.rlib
error: could not compile `lora-discovery` due to previous error
I found the following open issue which looks like it is related:
rust-lang/rust#96486
|
Is there anyone still having this issue? For me the problem disappeared with nightly-2022-06-17. |
yvt
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Aug 14, 2022
…size`" This reverts commit 171289c. It seems these targets are not affected by [rust-lang/rust#96486][1] anymore. [1]: rust-lang/rust#96486
|
@operutka same here - the issue goes away after upgrading my compiler |
workingjubilee
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bors
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Sep 14, 2023
Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. ＼（＾▽＾）／ I will test the following issues later to verify. The task format is `Fixes {issue} {nightly-2023-07-20 result} {PR rust-lang#113923 result}`. - [x] Fixes rust-lang#72140. ❌ ✅ - [x] Fixes rust-lang#112245. ❌ ✅ - [x] Fixes rust-lang#110606. ❌ ✅ - [ ] Fixes rust-lang#105734. - [ ] Fixes rust-lang#96486. - [ ] Fixes rust-lang#108853. - [x] Fixes rust-lang/compiler-builtins#347. ❌ ✅ - [ ] Fixes rust-lang#108893. - [ ] Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
bors
added a commit
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Oct 12, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. ＼（＾▽＾）／ I will test the following issues later to verify. The task format is `Fixes {issue} {nightly-2023-07-20 result} {PR rust-lang#113923 result}`. - [x] Fixes rust-lang#72140. ❌ ✅ - [x] Fixes rust-lang#112245. ❌ ✅ - [x] Fixes rust-lang#110606. ❌ ✅ - [ ] Fixes rust-lang#105734. - [ ] Fixes rust-lang#96486. - [ ] Fixes rust-lang#108853. - [x] Fixes rust-lang/compiler-builtins#347. ❌ ✅ - [ ] Fixes rust-lang#108893. - [ ] Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
bors
added a commit
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Oct 17, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. ＼（＾▽＾）／ I will test the following issues later to verify. The task format is `Fixes {issue} {nightly-2023-07-20 result} {PR rust-lang#113923 result}`. - [x] Fixes rust-lang#72140. ❌ ✅ - [x] Fixes rust-lang#112245. ❌ ✅ - [x] Fixes rust-lang#110606. ❌ ✅ - [ ] Fixes rust-lang#105734. - [ ] Fixes rust-lang#96486. - [ ] Fixes rust-lang#108853. - [x] Fixes rust-lang/compiler-builtins#347. ❌ ✅ - [ ] Fixes rust-lang#108893. - [ ] Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
bors
added a commit
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Oct 26, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. Fixes rust-lang#72140. Fixes rust-lang#112245. Fixes rust-lang#110606. Fixes rust-lang#105734. Fixes rust-lang#96486. Fixes rust-lang#108853. Fixes rust-lang#108893. Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. Fixes rust-lang/compiler-builtins#347. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
bors
added a commit
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Oct 27, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. Fixes rust-lang#72140. Fixes rust-lang#112245. Fixes rust-lang#110606. Fixes rust-lang#105734. Fixes rust-lang#96486. Fixes rust-lang#108853. Fixes rust-lang#108893. Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. Fixes rust-lang/compiler-builtins#347. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
bors
added a commit
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Oct 28, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. Fixes rust-lang#72140. Fixes rust-lang#112245. Fixes rust-lang#110606. Fixes rust-lang#105734. Fixes rust-lang#96486. Fixes rust-lang#108853. Fixes rust-lang#108893. Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. Fixes rust-lang/compiler-builtins#347. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
bors
added a commit
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Nov 14, 2023
Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. Fixes rust-lang#72140. Fixes rust-lang#112245. Fixes rust-lang#110606. Fixes rust-lang#105734. Fixes rust-lang#96486. Fixes rust-lang#108853. Fixes rust-lang#108893. Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. Fixes rust-lang/compiler-builtins#347. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
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Nov 16, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. Fixes rust-lang#72140. Fixes rust-lang#112245. Fixes rust-lang#110606. Fixes rust-lang#105734. Fixes rust-lang#96486. Fixes rust-lang#108853. Fixes rust-lang#108893. Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. Fixes rust-lang/compiler-builtins#347. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
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added a commit
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Nov 16, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. Fixes rust-lang#72140. Fixes rust-lang#112245. Fixes rust-lang#110606. Fixes rust-lang#105734. Fixes rust-lang#96486. Fixes rust-lang#108853. Fixes rust-lang#108893. Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. Fixes rust-lang/compiler-builtins#347. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
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Nov 30, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. Fixes rust-lang#72140. Fixes rust-lang#112245. Fixes rust-lang#110606. Fixes rust-lang#105734. Fixes rust-lang#96486. Fixes rust-lang#108853. Fixes rust-lang#108893. Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. Fixes rust-lang/compiler-builtins#347. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
bors
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Dec 1, 2023
…kfelix Restore `#![no_builtins]` crates participation in LTO. After rust-lang#113716, we can make `#![no_builtins]` crates participate in LTO again. `#![no_builtins]` with LTO does not result in undefined references to the error. I believe this type of issue won't happen again. Fixes rust-lang#72140. Fixes rust-lang#112245. Fixes rust-lang#110606. Fixes rust-lang#105734. Fixes rust-lang#96486. Fixes rust-lang#108853. Fixes rust-lang#108893. Fixes rust-lang#78744. Fixes rust-lang#91158. Fixes rust-lang/cargo#10118. Fixes rust-lang/compiler-builtins#347. The `nightly-2023-07-20` version does not always reproduce problems due to changes in compiler-builtins, core, and user code. That's why this issue recurs and disappears. Some issues were not tested due to the difficulty of reproducing them. r? pnkfelix cc `@bjorn3` `@japaric` `@alexcrichton` `@Amanieu`
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rustc --version --verbose:Enabling thin LTO causes a few undefined symbols:
Compiler Output (click)
While on full LTO it's even worse:
Compiler Output (click)
This wasn't happening a few versions back, but currently not sure since which version this broke.
As a temporary workaround, I've disabled LTO on profile.dev
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