rustc 1.78.0 segfault on MacOS / M1 about rust HOT 7 CLOSED

Could someone please run cargo -v and then repeat the rustc command with -C save-temps and share the bitcode files?

I can reproduce it, and I will try to reduce it.

from rust.

The problem disappears if I turn off incremental compilation by adding this to the Cargo.toml:

[profile.dev]
incremental = false

from rust.

I believe this bisects to LLVM 18 from #120055 cc @nikic

from rust.

We are hitting an LLVM assertion:

Assertion failed: (N < NumContainedTys && "Element number out of range!"), function getElementType, file DerivedTypes.h, line 343.

from rust.

Could someone please run cargo -v and then repeat the rustc command with -C save-temps and share the bitcode files?

from rust.

Upstream issue: llvm/llvm-project#92062
Reduced: https://llvm.godbolt.org/z/a4h1abfKc.

target triple = "arm64"

@p = external global { {}, { ptr } }

define void @foo() {
bb:
  %i1 = load ptr, ptr @p, align 8
  store ptr %i1, ptr null, align 8
  ret void
}

from rust.

It has already been backported to LLVM 18: llvm/llvm-project#92129.
@rustbot label +llvm-fixed-upstream

from rust.