ICE with macro

[emberian]

With:

macro_rules! eofe(
    ($inp:ident) => (
        if $inp.len() != $inp_size {
            return Err(fmt!("invalid file: expected %d bytes in the $inp section \
                            but hit EOF", $inp_size));
            }
    );
)

fn main() {
    eofe!(foo);
}

[15:29:42]/tmp> rustc foo.rs
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug
note: try running with RUST_LOG=rustc=1,::rt::backtrace to get further details and report the results to github.com/mozilla/rust/issues

[15:30:00]/tmp> RUST_LOG=::rt::backtrace rustc foo.rs           
rust: task failed at 'No entry found for key: &{repr: 40, ctxt: 0}', /home/cmr/hacking/rust/src/libcore/hashmap.rs:625
/home/cmr/.local/bin/../lib/librustrt.so(+0x1d37d)[0x7fcadbb3037d]
/home/cmr/.local/bin/../lib/librustrt.so(+0x1e019)[0x7fcadbb31019]
/home/cmr/.local/bin/../lib/librustrt.so(+0x2d501)[0x7fcadbb40501]
/home/cmr/.local/bin/../lib/librustrt.so(_ZN9rust_task15call_on_c_stackEPvS0_+0xbf)[0x7fcadbb31e5f]
/home/cmr/.local/bin/../lib/librustrt.so(upcall_fail+0x9f)[0x7fcadbb3268f]
/home/cmr/.local/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(_ZN3sys13begin_unwind_16_615cb041c655a976_07preE+0x63)[0x7fcadb471da3]
/home/cmr/.local/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0x125d32)[0x7fcadb471d32]
/home/cmr/.local/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(_ZN3sys14__extensions__9meth_91519fail_with17_ac9eb45dc42bd6906_07preE+0x6b)[0x7fcadb3b1ccb]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x27884f)[0x7fcada8d284f]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x277ae8)[0x7fcada8d1ae8]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN3ext2tt10transcribe13tt_next_token16_66ff343aeb0bd2d6_07preE+0x1340)[0x7fcada77bab0]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse5lexer14__extensions__10meth_1887210next_token17_f94455847d86b1c66_07preE+0x97)[0x7fcada77a6d7]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_194364bump17_7969da46cf761e406_07preE+0x139)[0x7fcada7915d9]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x15db69)[0x7fcada7b7b69]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_1997827parse_dot_or_call_expr_with16_9b61d7df819dc426_07preE+0x2d5)[0x7fcada7b6d15]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_1997622parse_dot_or_call_expr16_1098f4244fcb9146_07preE+0x6d)[0x7fcada7b69ad]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2009617parse_prefix_expr16_1098f4244fcb9146_07preE+0x1b1)[0x7fcada7bb041]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2009812parse_binops16_1098f4244fcb9146_07preE+0x44)[0x7fcada7bbbf4]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2010617parse_assign_expr16_1098f4244fcb9146_07preE+0x63)[0x7fcada7bca33]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2013714parse_expr_res16_3b2e3cf4be964ab6_07preE+0x79)[0x7fcada7be889]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_1986313parse_if_expr16_1098f4244fcb9146_07preE+0x6f)[0x7fcada7aed7f]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_1985217parse_bottom_expr16_1098f4244fcb9146_07preE+0x1201)[0x7fcada7aac21]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_1997622parse_dot_or_call_expr16_1098f4244fcb9146_07preE+0x43)[0x7fcada7b6983]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2009617parse_prefix_expr16_1098f4244fcb9146_07preE+0x1b1)[0x7fcada7bb041]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2009812parse_binops16_1098f4244fcb9146_07preE+0x44)[0x7fcada7bbbf4]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2010617parse_assign_expr16_1098f4244fcb9146_07preE+0x63)[0x7fcada7bca33]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2013714parse_expr_res16_3b2e3cf4be964ab6_07preE+0x79)[0x7fcada7be889]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN5parse6parser14__extensions__10meth_2023010parse_stmt17_8e137290feb255f66_07preE+0xdf7)[0x7fcada7c3467]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x28511d)[0x7fcada8df11d]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN3ext6expand11expand_stmt16_adbf282cce4a8846_07preE+0x705)[0x7fcada85a285]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x205780)[0x7fcada85f780]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold14__extensions__10meth_186159fold_stmt17_8fe592c5372d242e6_07preE+0xf1)[0x7fcada775871]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x10639a)[0x7fcada76039a]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x7316c)[0x7fcada6cd16c]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold15noop_fold_block16_450d95967ea8b5b6_07preE+0xd4)[0x7fcada75ffa4]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x118494)[0x7fcada772494]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN3ext6expand12expand_block16_5dd6e41869b3d9a6_07preE+0x2be)[0x7fcada85ba4e]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x205930)[0x7fcada85f930]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold14__extensions__10meth_1861210fold_block17_e4c1af3d8376673a6_07preE+0xe8)[0x7fcada775608]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold25noop_fold_item_underscore17_9eadb22cc86160a96_07preE+0x470)[0x7fcada75c3e0]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold14__extensions__10meth_1860620fold_item_underscore15_c20579a6d0a0f36_07preE+0x86)[0x7fcada775346]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold14noop_fold_item17_af2e9b1199dcfa1a6_07preE+0x16c)[0x7fcada75b4ec]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN3ext6expand11expand_item17_3bee51952c7928306_07preE+0x279)[0x7fcada856c89]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x2055bc)[0x7fcada85f5bc]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold14__extensions__10meth_186009fold_item16_31f373790fae0c66_07preE+0xa9)[0x7fcada774eb9]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x110169)[0x7fcada76a169]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x73610)[0x7fcada6cd610]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold13noop_fold_mod15_5072186056a9726_07preE+0xd7)[0x7fcada769fa7]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN3ext6expand16expand_mod_items17_1e5361c5e15e8a3c6_07preE+0x74)[0x7fcada855f14]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x20546b)[0x7fcada85f46b]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold14__extensions__10meth_186338fold_mod17_607d3adcc2f4a3c06_07preE+0x8c)[0x7fcada7768bc]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold15noop_fold_crate17_22d4cda4a2d758216_07preE+0xba)[0x7fcada759e4a]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(+0x118034)[0x7fcada772034]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN4fold14__extensions__10meth_1858910fold_crate17_9433a53b12f6a4dc6_07preE+0xd3)[0x7fcada774803]
/home/cmr/.local/bin/../lib/libsyntax-84efebcb12c867a2-0.7-pre.so(_ZN3ext6expand12expand_crate15_f0fc7cf7c0c2f76_07preE+0xa1e)[0x7fcada85cb9e]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa30f50)[0x7fcada134f50]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa30d1d)[0x7fcada134d1d]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6driver6driver12compile_rest14_b2bbbd99b7f256_07preE+0x254)[0x7fcada12ecc4]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6driver6driver12compile_upto16_763b25ba9ecf0d36_07preE+0x192)[0x7fcada136142]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN6driver6driver13compile_input16_de35901cc3a34cb6_07preE+0x107)[0x7fcada1365c7]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN12run_compiler17_de63a4afa8565e6d6_07preE+0x2bcb)[0x7fcada166b7b]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa7585e)[0x7fcada17985e]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa7314c)[0x7fcada17714c]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa6cb1c)[0x7fcada170b1c]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa75b38)[0x7fcada179b38]
/home/cmr/.local/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0xeece5)[0x7fcadb43ace5]
/home/cmr/.local/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0x16b538)[0x7fcadb4b7538]
/home/cmr/.local/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x25)[0x7fcadbb306d5]
error: internal compiler error: unexpected failure
note: the compiler hit an unexpected failure path. this is a bug
note: try running with RUST_LOG=rustc=1,::rt::backtrace to get further details and report the results to github.com/mozilla/rust/issues
rust: task failed at 'explicit failure', /home/cmr/hacking/rust/src/librustc/rustc.rc:355
/home/cmr/.local/bin/../lib/librustrt.so(+0x1d37d)[0x7fcadbb3037d]
/home/cmr/.local/bin/../lib/librustrt.so(+0x1e019)[0x7fcadbb31019]
/home/cmr/.local/bin/../lib/librustrt.so(+0x2d501)[0x7fcadbb40501]
/home/cmr/.local/bin/../lib/librustrt.so(_ZN9rust_task15call_on_c_stackEPvS0_+0xbf)[0x7fcadbb31e5f]
/home/cmr/.local/bin/../lib/librustrt.so(upcall_fail+0x9f)[0x7fcadbb3268f]
/home/cmr/.local/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(_ZN3sys13begin_unwind_16_615cb041c655a976_07preE+0x63)[0x7fcadb471da3]
/home/cmr/.local/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0x125e52)[0x7fcadb471e52]
/home/cmr/.local/bin/../lib/libcore-c3ca5d77d81b46c1-0.7-pre.so(+0x64124)[0x7fcadb3b0124]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN7monitor17_fd3a6455962a2d396_07preE+0x2415)[0x7fcada16a175]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(+0xa75b38)[0x7fcada179b38]
/home/cmr/.local/bin/../lib/librustc-c84825241471686d-0.7-pre.so(_ZN4main15_c4de63b748e03d6_07preE+0x69)[0x7fcada179799]
rustc(_rust_main+0x2e)[0x400bfe]
/home/cmr/.local/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x25)[0x7fcadbb306d5]
rust: domain main @0xf3cef0 root task failed

[emberian]

(I'm pretty sure that macro is invalid, too)

[emberian]

It seems to be triggered by any $foo where foo doesn't exist

[emberian]

Offending function: https://github.com/mozilla/rust/blob/master/src/libsyntax/ext/tt/transcribe.rs#L120

[emberian]

Have a fix; testing.

[emberian]

Fixed by #6686