<p dir="auto">Hi!<br>
When I was writing my own version of Game of Life, I made new function which caused message:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="C:\Users\User\projects\testi2&gt;cargo build
   Compiling testi2 v0.1.0 (file:///C:/Users/User/projects/testi2)
... some warnings...
error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'assertion failed: slice_layout_is_correct(cx, &amp;member_llvm_types[..], element_type)', C:/bot/slave/stable-dist-rustc-win-gnu-64/build/src/librustc_trans\trans\debuginfo\metadata.rs:579

Could not compile `testi2`.

To learn more, run the command again with --verbose."><pre class="notranslate"><code class="notranslate">C:\Users\User\projects\testi2&gt;cargo build
   Compiling testi2 v0.1.0 (file:///C:/Users/User/projects/testi2)
... some warnings...
error: internal compiler error: unexpected panic
note: the compiler unexpectedly panicked. this is a bug.
note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports
note: run with `RUST_BACKTRACE=1` for a backtrace
thread 'rustc' panicked at 'assertion failed: slice_layout_is_correct(cx, &amp;member_llvm_types[..], element_type)', C:/bot/slave/stable-dist-rustc-win-gnu-64/build/src/librustc_trans\trans\debuginfo\metadata.rs:579

Could not compile `testi2`.

To learn more, run the command again with --verbose.
</code></pre></div>
<p dir="auto">This happens only with cargo build, but with rustc it's fine.<br>
I noticed that following program is enough to cause that:</p>
<div class="highlight highlight-source-rust notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="fn main() {
    println!(&quot;Hello, world!&quot;);
}

fn laske_ymparisto(taulukko: &amp;[[bool]]) -&gt; i32{
    6
}"><pre class="notranslate"><span class="pl-k">fn</span> <span class="pl-en">main</span><span class="pl-kos">(</span><span class="pl-kos">)</span> <span class="pl-kos">{</span>
    <span class="pl-en">println</span><span class="pl-en">!</span><span class="pl-kos">(</span><span class="pl-s">"Hello, world!"</span><span class="pl-kos">)</span><span class="pl-kos">;</span>
<span class="pl-kos">}</span>

<span class="pl-k">fn</span> <span class="pl-en">laske_ymparisto</span><span class="pl-kos">(</span><span class="pl-s1">taulukko</span><span class="pl-kos">:</span> <span class="pl-c1">&amp;</span><span class="pl-kos">[</span><span class="pl-kos">[</span><span class="pl-smi">bool</span><span class="pl-kos">]</span><span class="pl-kos">]</span><span class="pl-kos">)</span> -&gt; <span class="pl-smi">i32</span><span class="pl-kos">{</span>
    <span class="pl-c1">6</span>
<span class="pl-kos">}</span></pre></div>
<p dir="auto">My rust version:<br>
rustc 1.1.0 (<a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/rust-lang/rust/commit/35ceea3997c79a3b7562e89b462ab76af5b86b22/hovercard" href="https://github.com/rust-lang/rust/commit/35ceea3997c79a3b7562e89b462ab76af5b86b22"><tt>35ceea3</tt></a> 2015-06-19)<br>
binary: rustc<br>
commit-hash: <a class="commit-link" data-hovercard-type="commit" data-hovercard-url="https://github.com/rust-lang/rust/commit/35ceea3997c79a3b7562e89b462ab76af5b86b22/hovercard" href="https://github.com/rust-lang/rust/commit/35ceea3997c79a3b7562e89b462ab76af5b86b22"><tt>35ceea3</tt></a><br>
commit-date: 2015-06-19<br>
host: x86_64-pc-windows-gnu<br>
release: 1.1.0</p>
<p dir="auto">I would like to know if anyone else gets this kind of problem or is it just me.</p>
<p dir="auto">Hi Folks,</p>
<p dir="auto">Just ran into a compiler panic.  I'm still learning rust, so it's probably related to a stupid syntax error on my part, but rustc suggested I file a bug report, so here I am...</p>
<p dir="auto">Here's the error:</p>
<p dir="auto">thread 'rustc' panicked at 'assertion failed: slice_layout_is_correct(cx, &amp;member_llvm_types[..], element_type)', /home/rustbuild/src/rust-buildbot/slave/nightly-dist-rustc-linux/build/src/librustc_trans/trans/debuginfo.rs:2810</p>
<p dir="auto">Here's the code I was writing:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="    pub fn aggregate(&amp;self, group_column: &amp;str, sum_columns: &amp;[str]) {

    }"><pre class="notranslate"><code class="notranslate">    pub fn aggregate(&amp;self, group_column: &amp;str, sum_columns: &amp;[str]) {

    }
</code></pre></div>
<p dir="auto">Here's the backtrace:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="   1:     0x7f2103105f39 - sys::backtrace::write::h7638fca3b07af337rVs
   2:     0x7f210310dbb6 - panicking::on_panic::h64a1f0366c6b8a23mkx
   3:     0x7f21030ca912 - rt::unwind::begin_unwind_inner::hcaa5609c9e3078adwZw
   4:     0x7f2101e5b28e - rt::unwind::begin_unwind::h15509594317540694492
   5:     0x7f2101f5a843 - trans::debuginfo::vec_slice_metadata::hfcdfde7a231fb874ehy
   6:     0x7f2101f460bc - trans::debuginfo::type_metadata::hadf1ae524fc7b529Kpy
   7:     0x7f2101f5add0 - trans::debuginfo::subroutine_type_metadata::hd6ba8b12e5430450kly
   8:     0x7f2101f45a94 - trans::debuginfo::type_metadata::hadf1ae524fc7b529Kpy
   9:     0x7f2101eb39a6 - trans::debuginfo::create_function_debug_context::h4a389096a1ba01b1I1w
  10:     0x7f2101eb1f7f - trans::base::new_fn_ctxt::h5648354326e8de67tkh
  11:     0x7f2101ebaf72 - trans::base::trans_closure::h0dc61076718b152eBDh
  12:     0x7f2101ebef8a - trans::base::trans_fn::h017a63e4b4f1d383jOh
  13:     0x7f2101ec2ad4 - trans::base::trans_item::h694a5c0c3e92277bvci
  14:     0x7f2101ec2948 - trans::base::trans_item::h694a5c0c3e92277bvci
  15:     0x7f2101ec2948 - trans::base::trans_item::h694a5c0c3e92277bvci
  16:     0x7f2101ed03bd - trans::base::trans_crate::h93b35940c9d58579v1i
  17:     0x7f2103675d5a - driver::phase_4_translate_to_llvm::h0cea9caf6133630enOa
  18:     0x7f210364e05b - driver::compile_input::h4642f691e22278cbQba
  19:     0x7f210370e331 - run_compiler::he528ba831532b90aF4b
  20:     0x7f210370bf82 - boxed::F.FnBox&lt;A&gt;::call_box::h13568337174014462877
  21:     0x7f210370b4b9 - rt::unwind::try::try_fn::h15381261312250239500
  22:     0x7f2103185528 - rust_try_inner
  23:     0x7f2103185515 - rust_try
  24:     0x7f210370b768 - boxed::F.FnBox&lt;A&gt;::call_box::h6713016946069099629
  25:     0x7f210310cac1 - sys::thread::create::thread_start::hbe89fbdfc755452dxjw
  26:     0x7f20fd1b7181 - start_thread
  27:     0x7f2102d4347c - __clone
  28:                0x0 - &lt;unknown&gt;"><pre class="notranslate"><code class="notranslate">   1:     0x7f2103105f39 - sys::backtrace::write::h7638fca3b07af337rVs
   2:     0x7f210310dbb6 - panicking::on_panic::h64a1f0366c6b8a23mkx
   3:     0x7f21030ca912 - rt::unwind::begin_unwind_inner::hcaa5609c9e3078adwZw
   4:     0x7f2101e5b28e - rt::unwind::begin_unwind::h15509594317540694492
   5:     0x7f2101f5a843 - trans::debuginfo::vec_slice_metadata::hfcdfde7a231fb874ehy
   6:     0x7f2101f460bc - trans::debuginfo::type_metadata::hadf1ae524fc7b529Kpy
   7:     0x7f2101f5add0 - trans::debuginfo::subroutine_type_metadata::hd6ba8b12e5430450kly
   8:     0x7f2101f45a94 - trans::debuginfo::type_metadata::hadf1ae524fc7b529Kpy
   9:     0x7f2101eb39a6 - trans::debuginfo::create_function_debug_context::h4a389096a1ba01b1I1w
  10:     0x7f2101eb1f7f - trans::base::new_fn_ctxt::h5648354326e8de67tkh
  11:     0x7f2101ebaf72 - trans::base::trans_closure::h0dc61076718b152eBDh
  12:     0x7f2101ebef8a - trans::base::trans_fn::h017a63e4b4f1d383jOh
  13:     0x7f2101ec2ad4 - trans::base::trans_item::h694a5c0c3e92277bvci
  14:     0x7f2101ec2948 - trans::base::trans_item::h694a5c0c3e92277bvci
  15:     0x7f2101ec2948 - trans::base::trans_item::h694a5c0c3e92277bvci
  16:     0x7f2101ed03bd - trans::base::trans_crate::h93b35940c9d58579v1i
  17:     0x7f2103675d5a - driver::phase_4_translate_to_llvm::h0cea9caf6133630enOa
  18:     0x7f210364e05b - driver::compile_input::h4642f691e22278cbQba
  19:     0x7f210370e331 - run_compiler::he528ba831532b90aF4b
  20:     0x7f210370bf82 - boxed::F.FnBox&lt;A&gt;::call_box::h13568337174014462877
  21:     0x7f210370b4b9 - rt::unwind::try::try_fn::h15381261312250239500
  22:     0x7f2103185528 - rust_try_inner
  23:     0x7f2103185515 - rust_try
  24:     0x7f210370b768 - boxed::F.FnBox&lt;A&gt;::call_box::h6713016946069099629
  25:     0x7f210310cac1 - sys::thread::create::thread_start::hbe89fbdfc755452dxjw
  26:     0x7f20fd1b7181 - start_thread
  27:     0x7f2102d4347c - __clone
  28:                0x0 - &lt;unknown&gt;
</code></pre></div>
<p dir="auto">Other Details:</p>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="rustc --version --verbose
rustc 1.0.0-nightly (2baf34825 2015-04-21) (built 2015-04-22)
binary: rustc
commit-hash: 2baf3482537f5a245a9c17ca730398f1a8b001d7
commit-date: 2015-04-21
build-date: 2015-04-22
host: x86_64-unknown-linux-gnu
release: 1.0.0-nightly"><pre class="notranslate"><code class="notranslate">rustc --version --verbose
rustc 1.0.0-nightly (2baf34825 2015-04-21) (built 2015-04-22)
binary: rustc
commit-hash: 2baf3482537f5a245a9c17ca730398f1a8b001d7
commit-date: 2015-04-21
build-date: 2015-04-22
host: x86_64-unknown-linux-gnu
release: 1.0.0-nightly
</code></pre></div>