core 1.90.0 fails to build on arm64: `<null> BUG: src/hir/hir.cpp: TODO: ord - Compare non-expanded array sizes`

[barracuda156]

@thepowersgang Looks like we got a number of breakages with the current version.

make[1]: Nothing to be done for `all'.
test -e bin/mrustc
/Library/Developer/CommandLineTools/usr/bin/make -C tools/minicargo/
make[1]: Nothing to be done for `all'.
test -e bin/minicargo
STD_ENV_ARCH=aarch64 bin/minicargo --vendor-dir rustc-1.90.0-src/vendor --script-overrides script-overrides/stable-1.90.0-macos/ --output-dir output-1.90.0/  --manifest-overrides rustc-1.90.0-overrides.toml rustc-1.90.0-src/mrustc-stdlib/
--- BUILDING core v0.0.0 (0.0% 1r,0w,18b,0c/19t)
> /opt/local/var/macports/build/mrustc-6ae41f97/work/mrustc-46a04927b3f3825e71aa51002bba45e5783d07da/bin/mrustc /opt/local/var/macports/build/mrustc-6ae41f97/work/mrustc-46a04927b3f3825e71aa51002bba45e5783d07da/rustc-1.90.0-src/library/core/src/lib.rs -o output-1.90.0/libcore.rlib -C emit-depfile=output-1.90.0/libcore.rlib.d --cfg debug_assertions -O -L output-1.90.0 --crate-name core --crate-type rlib --crate-tag 0_0_0 --edition 2024 > output-1.90.0/libcore.rlib_dbg.txt
 (0.0% 1r,0w,18b,0c/19t): core v0.0.0
<null> BUG: src/hir/hir.cpp:132: TODO: ord - Compare non-expanded array sizes - (w/ MIR) {0=<{Generic(N/*I:0*/)},>1=<T/*M:0*/,>}bb0:{ retval = Constant(0x4 usize); Return } and {0=<{Generic(N/*I:0*/)},>1=<T/*M:0*/,>}8_unk
Process was terminated with signal 6
FAILING COMMAND: /opt/local/var/macports/build/mrustc-6ae41f97/work/mrustc-46a04927b3f3825e71aa51002bba45e5783d07da/bin/mrustc /opt/local/var/macports/build/mrustc-6ae41f97/work/mrustc-46a04927b3f3825e71aa51002bba45e5783d07da/rustc-1.90.0-src/library/core/src/lib.rs -o output-1.90.0/libcore.rlib -C emit-depfile=output-1.90.0/libcore.rlib.d --cfg debug_assertions -O -L output-1.90.0 --crate-name core --crate-type rlib --crate-tag 0_0_0 --edition 2024
Env:  OUT_DIR=/opt/local/var/macports/build/mrustc-6ae41f97/work/mrustc-46a04927b3f3825e71aa51002bba45e5783d07da/output-1.90.0/build_core CARGO_CRATE_NAME=core CARGO_MANIFEST_DIR=/opt/local/var/macports/build/mrustc-6ae41f97/work/mrustc-46a04927b3f3825e71aa51002bba45e5783d07da/rustc-1.90.0-src/library/core CARGO_PKG_NAME=core CARGO_PKG_VERSION=0.0.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=0
 (5.3% 0r,0w,18b,1c/19t):
BUILD FAILED
make: *** [LIBS] Error 1

[thepowersgang]

OSX builds? I don't test those so breakages are not unlikely :)

[barracuda156]

@thepowersgang Yeah, macOS, and same error if clang with libc++ is used.

P. S. In this case error points to a TODO, so perhaps just add an implementation there, and It should fix the problem?

[thepowersgang]

"Just add an implementation" is underselling it, the case there is the most complex part about const generics - handling partially evaluated generics.
Don't expect a fix to this issue from me any time soon, as this isn't something I can fix in a few minutes of quick hacking.

[barracuda156]

Got it, sorry, I did not look into what the code is doing.

[Millak]

for the sake of completeness I also ran into this on aarch64 on linux

[barracuda156]

for the sake of completeness I also ran into this on aarch64 on linux

Interesting. Then possibly it will work on macOS outside of arm64 (in practice, we really need mrustc only on powerpc).

[barracuda156]

@thepowersgang Looks like it is arm64-specific, not macOS-specific. On powerpc no such an error.

[thepowersgang]

#410 may have fixed this

[Millak]

aarch64-linux with system llvm-21 and gcc-14.

make[1]: Leaving directory '/tmp/guix-build-rust-1.90.0.drv-0/source/tools/minicargo'
test -e bin/minicargo
STD_ENV_ARCH=aarch64 bin/minicargo --vendor-dir rustc-1.90.0-src/vendor --script-overrides script-overrides/stable-1.90.0-linux/ --output-dir output/ -j 4 --manifest-overrides rustc-1.90.0-overrides.toml rustc-1.90.0-src/mrustc-stdlib/
--- BUILDING core v0.0.0 (0.0% 1r,0w,18b,0c/19t)
> /tmp/guix-build-rust-1.90.0.drv-0/source/bin/mrustc /tmp/guix-build-rust-1.90.0.drv-0/source/rustc-1.90.0-src/library/core/src/lib.rs -o output/libcore.rlib -C emit-depfile=output/libcore.rlib.d --cfg debug_assertions -O -L output --crate-name core --crate-type rlib --crate-tag 0_0_0 --edition 2024 > output/libcore.rlib_dbg.txt
 (0.0% 1r,0w,18b,0c/19t): core v0.0.0
terminate called after throwing an instance of '(anonymous namespace)::Defer'
Process was terminated with signal 6
FAILING COMMAND: /tmp/guix-build-rust-1.90.0.drv-0/source/bin/mrustc /tmp/guix-build-rust-1.90.0.drv-0/source/rustc-1.90.0-src/library/core/src/lib.rs -o output/libcore.rlib -C emit-depfile=output/libcore.rlib.d --cfg debug_assertions -O -L output --crate-name core --crate-type rlib --crate-tag 0_0_0 --edition 2024
Env:  OUT_DIR=/tmp/guix-build-rust-1.90.0.drv-0/source/output/build_core CARGO_CRATE_NAME=core CARGO_MANIFEST_DIR=/tmp/guix-build-rust-1.90.0.drv-0/source/rustc-1.90.0-src/library/core CARGO_PKG_NAME=core CARGO_PKG_VERSION=0.0.0 CARGO_PKG_VERSION_MAJOR=0 CARGO_PKG_VERSION_MINOR=0 CARGO_PKG_VERSION_PATCH=0
 (5.3% 0r,0w,18b,1c/19t):
BUILD FAILED
make: *** [minicargo.mk:252: LIBS] Error 1