Some UI tests that used to pass now fail sync the last sync

[antoyo]

The following UI tests now fail since the last sync:

• tests/ui/simd/intrinsic/generic-arithmetic-pass.rs
• tests/ui/backtrace/backtrace.rs
• tests/ui/consts/zst_no_llvm_alloc.rs
• tests/ui/runtime/rt-explody-panic-payloads.rs (fail with master as well)

[sum12]

how do I run these tests locally ? ( in order to try and fix them ) running ./y.sh test --test-failing-ui-pattern-tests I get

Testing stage0 compiletest suite=ui mode=ui (aarch64-unknown-linux-gnu)
Build completed unsuccessfully in 0:00:00
./x.py test --run always --stage 0 tests/ui --rustc-args  -Zcodegen-backend=<path>/rustc_codegen_gcc/target/debug/librustc_codegen_gcc.so --sysroot <path>/rustc_codegen_gcc/build/build_sysroot/sysroot`

I did build libgccjit.so and the gcc-path is pointing to the folder with that file

[antoyo]

Are you on Asahi Linux?

[sum12]

would love to but not yet. fedora vm on M2

[antoyo]

Hum, I can try on a M1 with Asahi Linux to see if it still works, but the support for it is currently WIP.

Are you able to compile a simple project with rustc_codegen_gcc?

[sum12]

I guess it does ?

➜ ./y.sh cargo build --manifest-path tests/hello-world/Cargo.toml
[BUILD] build system
    Finished `release` profile [optimized] target(s) in 0.02s
warning: no edition set: defaulting to the 2015 edition while the latest is 2021
    Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.00s

[sum12]

nope,

✗ tests/hello-world/target/debug/hello_world 
[1]    1944449 segmentation fault (core dumped)  tests/hello-world/target/debug/hello_world

[antoyo]

Did you build the sysroot --release-sysroot? There's a bug because the naked attributed is not supported on AArch64 in GCC and compiling the sysroot in release mode workarounds the issue. See more info here.