[Pkg-rust-maintainers] Bug#921809: rustc: LLVM ERROR: Undefined temporary symbol (rust-wasm-bindgen-macro-support/ppc64el)

[Steve Langasek]

Package: rustc
Version: 1.32.0+dfsg1-1
User: ubuntu-devel at lists.ubuntu.com
Usertags: origin-ubuntu disco

rust-wasm-bindgen-macro-support fails to build on ppc64el in both Debian and
Ubuntu with the following error:

[...]
   Compiling wasm-bindgen-macro-support v0.2.33 (/<<PKGBUILDDIR>>)
     Running `rustc --crate-name wasm_bindgen_macro_support src/lib.rs --color never --crate-type lib --emit=dep-info,link -C debuginfo=2 -C metadata=6a9909accf772696 -C extra-filename=-6a9909accf772696 --out-dir /<<PKGBUILDDIR>>/target/powerpc64le-unknown-linux-gnu/debug/deps --target powerpc64le-unknown-linux-gnu -C incremental=/<<PKGBUILDDIR>>/target/powerpc64le-unknown-linux-gnu/debug/incremental -L dependency=/<<PKGBUILDDIR>>/target/powerpc64le-unknown-linux-gnu/debug/deps -L dependency=/<<PKGBUILDDIR>>/target/debug/deps --extern proc_macro2=/<<PKGBUILDDIR>>/target/powerpc64le-unknown-linux-gnu/debug/deps/libproc_macro2-f042c85f95f84ab4.rlib --extern quote=/<<PKGBUILDDIR>>/target/powerpc64le-unknown-linux-gnu/debug/deps/libquote-2d04f78c87b252dc.rlib --extern syn=/<<PKGBUILDDIR>>/target/powerpc64le-unknown-linux-gnu/debug/deps/libsyn-c8c5acb28d4f9481.rlib --extern wasm_bindgen_backend=/<<PKGBUILDDIR>>/target/powerpc64le-unknown-linux-gnu/debug/deps/libwasm_bindgen_backend-a1b9fd8d5e269fc0.rlib --extern wasm_bindgen_shared=/<<PKGBUILDDIR>>/target/powerpc64le-unknown-linux-gnu/debug/deps/libwasm_bindgen_shared-b86d12bd4c252229.rlib -C debuginfo=2 --cap-lints warn -C linker=powerpc64le-linux-gnu-gcc -C link-arg=-Wl,-z,relro --remap-path-prefix /<<PKGBUILDDIR>>=/usr/share/cargo/registry/wasm-bindgen-macro-support-0.2.33`
LLVM ERROR: Undefined temporary symbol
error: Could not compile `wasm-bindgen-macro-support`.
[...]

  (https://buildd.debian.org/status/fetch.php?pkg=rust-wasm-bindgen-macro-support&arch=ppc64el&ver=0.2.33-1&stamp=1549258418&raw=0)

There is no such error on other release architectures.

This blocks bootstrap / installability of a substantial number of rust
crates on this architecture.

-- 
Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                   https://www.debian.org/
slangasek at ubuntu.com                                     vorlon at debian.org
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