Can't compile rustc with debug info

[dotdash]

Trying to use RUSTFLAGS=-Z\ debug-info to build rustc with debug info leads to an ICE.

cfg: build triple x86_64-unknown-linux-gnu
cfg: host triples x86_64-unknown-linux-gnu
cfg: target triples x86_64-unknown-linux-gnu
cfg: host for x86_64-unknown-linux-gnu is x86_64
cfg: os for x86_64-unknown-linux-gnu is unknown-linux-gnu
cfg: using gcc
cfg: no pandoc found, omitting docs
cfg: no node found, omitting docs
cfg: no llnextgen found, omitting grammar-verification
cfg: no pandoc found, omitting library doc build
compile_and_link: x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd.so
error: internal compiler error: create_function: unexpected sort of node
rust: task failed at 'explicit failure', /home/doener/src/rust/src/libsyntax/diagnostic.rs:95
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x4b)[0x2aaaaaaedc7b]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustrt.so(+0x2f131)[0x2aaaaaaff131]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustrt.so(upcall_fail+0x198)[0x2aaaaaaefc28]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(_ZN3sys13begin_unwind_16_89e154cd09156713_07E+0x2ef)[0x2aaaaaddc98f]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x10daf2)[0x2aaaaaddcaf2]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x10d5c1)[0x2aaaaaddc5c1]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x10daac)[0x2aaaaaddcaac]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x10d5c1)[0x2aaaaaddc5c1]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x81c74)[0x2aaaaad50c74]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libsyntax-64629f7f0c6a9bc-0.7.so(_ZN10diagnostic14__extensions__10meth_236455fatal17_e0de3d9f29108f643_07E+0xf7)[0x2aaaab489557]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libsyntax-64629f7f0c6a9bc-0.7.so(_ZN10diagnostic14__extensions__10meth_238323bug17_e0de3d9f29108f643_07E+0xa7)[0x2aaaab489aa7]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6driver7session14__extensions__10meth_339513bug16_e3e78dc632d92823_07E+0x7a)[0x2aaaab9307aa]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans9debuginfo15create_function17_acf97c4f85947ac33_07E+0x100c)[0x2aaaaba88bbc]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x2dd756)[0x2aaaabaee756]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans9debuginfo17update_source_pos17_e78a5df12538b54d3_07E+0x526)[0x2aaaab978606]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans11controlflow11trans_block17_9cce49cb83f7b35f3_07E+0x230)[0x2aaaab976950]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base13trans_closure16_dfd85d88a919ce13_07E+0x878)[0x2aaaaba87228]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base8trans_fn16_1b878be2d1ea72c3_07E+0x45d)[0x2aaaab936bcd]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4meth12trans_method15_c5569a4a74618a3_07E+0x242)[0x2aaaab96f842]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans12monomorphize14monomorphic_fn16_6790d8a2018ebfc3_07E+0x26fd)[0x2aaaab93995d]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee25trans_fn_ref_with_vtables16_f4e5d08cb4dba183_07E+0x3174)[0x2aaaab9bd2d4]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4meth26trans_monomorphized_callee17_3c1ae953bf91f0da3_07E+0x57d)[0x2aaaabacdb7d]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4meth19trans_method_callee17_6f31715b39b6ed123_07E+0x1440)[0x2aaaab9c4960]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1b1840)[0x2aaaab9c2840]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1c57d0)[0x2aaaab9d67d0]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10with_scope16_67d3c0d5cc1e9c63_07E+0x433)[0x2aaaab985ca3]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee16trans_call_inner16_9f613cd93fb8bb53_07E+0x119)[0x2aaaab9c1679]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee17trans_method_call17_9ea078ddcb50c43e3_07E+0x570)[0x2aaaab9c1d10]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1d845c)[0x2aaaab9e945c]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4expr10trans_into17_5e617d4657b98f313_07E+0x8ae)[0x2aaaab979e0e]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10init_local17_e5393a7feb5efe7c3_07E+0x5d8)[0x2aaaaba7ecc8]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10trans_stmt17_7ea62311b4aa42333_07E+0x5f4)[0x2aaaab978f04]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans11controlflow11trans_block17_9cce49cb83f7b35f3_07E+0x156)[0x2aaaab976876]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base13trans_closure16_dfd85d88a919ce13_07E+0x878)[0x2aaaaba87228]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base8trans_fn16_1b878be2d1ea72c3_07E+0x45d)[0x2aaaab936bcd]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4meth12trans_method15_c5569a4a74618a3_07E+0x242)[0x2aaaab96f842]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans12monomorphize14monomorphic_fn16_6790d8a2018ebfc3_07E+0x3804)[0x2aaaab93aa64]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee25trans_fn_ref_with_vtables16_f4e5d08cb4dba183_07E+0x3174)[0x2aaaab9bd2d4]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4meth26trans_static_method_callee17_a343a8982bec3a8d3_07E+0x1118)[0x2aaaab9b6a18]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee5trans16_f560a23e85a8e823_07E+0x440)[0x2aaaab9b3890]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1b0751)[0x2aaaab9c1751]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1c57d0)[0x2aaaab9d67d0]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10with_scope16_67d3c0d5cc1e9c63_07E+0x433)[0x2aaaab985ca3]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee16trans_call_inner16_9f613cd93fb8bb53_07E+0x119)[0x2aaaab9c1679]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee10trans_call15_7cb857621c39753_07E+0x1fa)[0x2aaaab9c12fa]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1d83d5)[0x2aaaab9e93d5]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4expr10trans_into17_5e617d4657b98f313_07E+0x8ae)[0x2aaaab979e0e]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans11controlflow11trans_block17_9cce49cb83f7b35f3_07E+0x269)[0x2aaaab976989]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base13trans_closure16_dfd85d88a919ce13_07E+0x878)[0x2aaaaba87228]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base8trans_fn16_1b878be2d1ea72c3_07E+0x45d)[0x2aaaab936bcd]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4meth12trans_method15_c5569a4a74618a3_07E+0x242)[0x2aaaab96f842]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans12monomorphize14monomorphic_fn16_6790d8a2018ebfc3_07E+0x3804)[0x2aaaab93aa64]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee25trans_fn_ref_with_vtables16_f4e5d08cb4dba183_07E+0x3174)[0x2aaaab9bd2d4]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee12trans_fn_ref17_c8d64d3d92a8585e3_07E+0x66a)[0x2aaaab9b56aa]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4meth19trans_method_callee17_6f31715b39b6ed123_07E+0xa5a)[0x2aaaab9c3f7a]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1b1840)[0x2aaaab9c2840]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1c57d0)[0x2aaaab9d67d0]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10with_scope16_67d3c0d5cc1e9c63_07E+0x433)[0x2aaaab985ca3]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee16trans_call_inner16_9f613cd93fb8bb53_07E+0x119)[0x2aaaab9c1679]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee17trans_method_call17_9ea078ddcb50c43e3_07E+0x570)[0x2aaaab9c1d10]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1d845c)[0x2aaaab9e945c]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4expr10trans_into17_5e617d4657b98f313_07E+0x8ae)[0x2aaaab979e0e]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10init_local17_e5393a7feb5efe7c3_07E+0x5d8)[0x2aaaaba7ecc8]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10trans_stmt17_7ea62311b4aa42333_07E+0x5f4)[0x2aaaab978f04]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans11controlflow11trans_block17_9cce49cb83f7b35f3_07E+0x156)[0x2aaaab976876]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1e1839)[0x2aaaab9f2839]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10with_scope16_67d3c0d5cc1e9c63_07E+0x433)[0x2aaaab985ca3]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1d9f6a)[0x2aaaab9eaf6a]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4expr10trans_into17_5e617d4657b98f313_07E+0x8ae)[0x2aaaab979e0e]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans11controlflow11trans_block17_9cce49cb83f7b35f3_07E+0x269)[0x2aaaab976989]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base13trans_closure16_dfd85d88a919ce13_07E+0x651)[0x2aaaaba87001]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans7closure13trans_expr_fn17_866eab6ab12a5a383_07E+0x764)[0x2aaaab9dcf04]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1d9198)[0x2aaaab9ea198]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4expr14trans_to_datum15_1c0aeb319168d43_07E+0xd0d)[0x2aaaab97d63d]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee14trans_arg_expr17_522a9727c69cde8e3_07E+0x8d3)[0x2aaaab9d9b33]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee10trans_args17_bfd382fd5aa9bf883_07E+0x2c5)[0x2aaaab9d7e25]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1c5d9b)[0x2aaaab9d6d9b]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10with_scope16_67d3c0d5cc1e9c63_07E+0x433)[0x2aaaab985ca3]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee16trans_call_inner16_9f613cd93fb8bb53_07E+0x119)[0x2aaaab9c1679]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans6callee17trans_method_call17_9ea078ddcb50c43e3_07E+0x570)[0x2aaaab9c1d10]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1d845c)[0x2aaaab9e945c]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4expr10trans_into17_5e617d4657b98f313_07E+0x8ae)[0x2aaaab979e0e]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10trans_stmt17_7ea62311b4aa42333_07E+0x4f4)[0x2aaaab978e04]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans11controlflow11trans_block17_9cce49cb83f7b35f3_07E+0x156)[0x2aaaab976876]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base13trans_closure16_dfd85d88a919ce13_07E+0x878)[0x2aaaaba87228]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base8trans_fn16_1b878be2d1ea72c3_07E+0x45d)[0x2aaaab936bcd]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10trans_item17_93aaeb60a180a51b3_07E+0xabc)[0x2aaaab92f77c]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10trans_stmt17_7ea62311b4aa42333_07E+0x5ac)[0x2aaaab978ebc]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans11controlflow11trans_block17_9cce49cb83f7b35f3_07E+0x156)[0x2aaaab976876]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1e1839)[0x2aaaab9f2839]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10with_scope16_67d3c0d5cc1e9c63_07E+0x433)[0x2aaaab985ca3]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x1d9f6a)[0x2aaaab9eaf6a]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4expr10trans_into17_5e617d4657b98f313_07E+0x8ae)[0x2aaaab979e0e]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans11controlflow11trans_block17_9cce49cb83f7b35f3_07E+0x269)[0x2aaaab976989]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base13trans_closure16_dfd85d88a919ce13_07E+0x878)[0x2aaaaba87228]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base8trans_fn16_1b878be2d1ea72c3_07E+0x45d)[0x2aaaab936bcd]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10trans_item17_93aaeb60a180a51b3_07E+0xabc)[0x2aaaab92f77c]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base9trans_mod17_a65c34372be2acb83_07E+0x8d)[0x2aaaaba8b38d]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base10trans_item17_93aaeb60a180a51b3_07E+0x665)[0x2aaaab92f325]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base9trans_mod17_a65c34372be2acb83_07E+0x8d)[0x2aaaaba8b38d]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6middle5trans4base11trans_crate17_e19074a6ec60b7833_07E+0x422)[0x2aaaaba9c922]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x800b0d)[0x2aaaac011b0d]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6driver6driver12compile_rest17_43d7447bacb6f46a3_07E+0x244b)[0x2aaaac00f6db]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x83a6b8)[0x2aaaac04b6b8]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6driver6driver12compile_upto17_d47bed396b355cd33_07E+0x13f)[0x2aaaac011e3f]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN6driver6driver13compile_input17_f17ec8eee43cd9743_07E+0xd5)[0x2aaaac0121f5]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN12run_compiler17_122837a0b86ff46f3_07E+0x18c5)[0x2aaaac0312e5]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x83a3be)[0x2aaaac04b3be]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x837cad)[0x2aaaac048cad]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x82ee3b)[0x2aaaac03fe3b]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x83a6b8)[0x2aaaac04b6b8]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0xdbf01)[0x2aaaaadaaf01]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x16140c)[0x2aaaaae3040c]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x22)[0x2aaaaaaee5b2]
rust: task failed at 'explicit failure', /home/doener/src/rust/src/librustc/rustc.rs:355
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustrt.so(_ZN9rust_task13begin_failureEPKcS1_m+0x4b)[0x2aaaaaaedc7b]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustrt.so(+0x2f131)[0x2aaaaaaff131]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustrt.so(upcall_fail+0x198)[0x2aaaaaaefc28]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(_ZN3sys13begin_unwind_16_89e154cd09156713_07E+0x2ef)[0x2aaaaaddc98f]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x10daf2)[0x2aaaaaddcaf2]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x10d5c1)[0x2aaaaaddc5c1]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x10daac)[0x2aaaaaddcaac]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x10d5c1)[0x2aaaaaddc5c1]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/libstd-6c65cf4b443341b1-0.7.so(+0x81c74)[0x2aaaaad50c74]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN7monitor16_7d9af3abd6a5f873_07E+0x41e5)[0x2aaaac035fa5]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(+0x83a6b8)[0x2aaaac04b6b8]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustc-d3cb8c2ccd84a7a7-0.7.so(_ZN4main15_f3d16eaf7d57383_07E+0x69)[0x2aaaac04b2e9]
/home/doener/src/rust/x86_64/x86_64-unknown-linux-gnu/stage1/bin/../lib/librustrt.so(_Z18task_start_wrapperP10spawn_args+0x22)[0x2aaaaaaee5b2]
rust: domain main @0x674d70 root task failed
leaked memory in rust main loop (1 objects)
rustc: /home/doener/src/rust/src/rt/memory_region.cpp:192: memory_region::~memory_region(): Assertion `false' failed.
Aborted
make: *** [x86_64-unknown-linux-gnu/stage1/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd.so] Error 134

The unexpected node is a node_trait_method

[chris-morgan]

I'm running into this in my own codebase also, and so have condensed it down to a minimal test case which fails with rustc -Z debug-info:

#[allow(default_methods)];

pub trait TraitWithDefaultMethod {
    pub fn method(self) {
        ()
    }
}

struct MyStruct;

impl TraitWithDefaultMethod for MyStruct { }

fn main() {
    MyStruct.method();
}

(To the best of my knowledge, nothing can be removed from this example without the ICE melting, including that the method cannot be empty, hence the ().)

[huonw]

cc @msullivan @michaelwoerister

[jdm]

@chris-morgan That would be worth filing separately as ICE while generating debug symbols for default trait method

[michaelwoerister]

This is probably because of the missing case for ast_map::node_trait_method in debuginfo::create_function. I'll take a stab at fixing it later today.

[chris-morgan]

@jdm I believe it to be the same problem, so I figured putting it in here was most useful. Am I incorrect in either of those thoughts?

[jdm]

I'm a fan of tightly-scoped issues, personally, especially when there's a minimal testcase available.

[chris-morgan]

@jdm OK, filed as #7712

[chris-morgan]

#7712 has been closed. I tried building Rust with -Z debug-info and it completed successfully, but accessing a backtrace makes GDB fall over. Take, for example, this backtrace:

(gdb) bt
#0  0x00007ffff6896037 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1  0x00007ffff6899698 in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007ffff6e68939 in __morestack ()
   from /home/chris/vc/rust-dev/rusthttpserver/src/examples/../../../../../opt/rust/lib/rustc/x86_64-unknown-linux-gnu/lib/librustrt.so
#3  0x00007ffff6e58e9c in call_on_c_stack (fn_ptr=0x7ffff7847880 <abort__c_stack_shim>, args=0x7ffff5c2c6e8, 
    this=0x633ff0) at /home/chris/vc/rust/src/rt/rust_task.h:481
#4  upcall_call_shim_on_c_stack (args=0x7ffff5c2c6e8, fn_ptr=0x7ffff7847880 <abort__c_stack_shim>)
    at /home/chris/vc/rust/src/rt/rust_upcall.cpp:70
/build/buildd/gdb-7.6~20130417/gdb/dwarf2read.c:10350: internal-error: dwarf2_record_block_ranges: Assertion `dwarf2_per_objfile->ranges.readin' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) n

/build/buildd/gdb-7.6~20130417/gdb/dwarf2read.c:10350: internal-error: dwarf2_record_block_ranges: Assertion `dwarf2_per_objfile->ranges.readin' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n

#5  0x00007ffff7810601 in libc::funcs::c95::stdlib::abort::_3462191b9dd9e70::_0$x2e8$x2dpre ()
   from /home/chris/vc/rust-dev/rusthttpserver/src/examples/../../../../../opt/rust/lib/rustc/x86_64-unknown-linux-gnu/lib/libstd-6c65cf4b443341b1-0.8-pre.so
/build/buildd/gdb-7.6~20130417/gdb/dwarf2read.c:10350: internal-error: dwarf2_record_block_ranges: Assertion `dwarf2_per_objfile->ranges.readin' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) n

/build/buildd/gdb-7.6~20130417/gdb/dwarf2read.c:10350: internal-error: dwarf2_record_block_ranges: Assertion `dwarf2_per_objfile->ranges.readin' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n

In that case, GDB continues to work; in another where I interrupt a running process and produce a backtrace, GDB hangs for half a minute and the segfaults:

(gdb) bt
#0  0x00007ffff6443218 in pthread_join () from /lib/x86_64-linux-gnu/libpthread.so.0
#1  0x00007ffff6e50bc7 in rust_thread::join (this=this@entry=0x64c5e0)
    at /home/chris/vc/rust/src/rt/sync/rust_thread.cpp:65
#2  0x00007ffff6e52a16 in rust_raw_thread_join_delete (
/build/buildd/gdb-7.6~20130417/gdb/dwarf2read.c:10350: internal-error: dwarf2_record_block_ranges: Assertion `dwarf2_per_objfile->ranges.readin' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) n

/build/buildd/gdb-7.6~20130417/gdb/dwarf2read.c:10350: internal-error: dwarf2_record_block_ranges: Assertion `dwarf2_per_objfile->ranges.readin' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n
thread=0x64c5e0) at /home/chris/vc/rust/src/rt/rust_builtin.cpp:756
#3  0x00007ffff6e58f2c in upcall_call_shim_on_c_stack (
/build/buildd/gdb-7.6~20130417/gdb/dwarf2read.c:10350: internal-error: dwarf2_record_block_ranges: Assertion `dwarf2_per_objfile->ranges.readin' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) n

/build/buildd/gdb-7.6~20130417/gdb/dwarf2read.c:10350: internal-error: dwarf2_record_block_ranges: Assertion `dwarf2_per_objfile->ranges.readin' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) n
[1]    14224 segmentation fault (core dumped)  RUST_NEWRT=1 gdb src/examples/info

My present inclination is to file a PR to restore -Z debug-info to --enable-debug and file another issue about this stuff. Does that seem reasonable?

[jdm]

I'm not inclined to restore it until we are in a position where gdb's output is at least as good as it currently is without debug symbols. Internal errors do not meet that bar, in my opinion.

[jdm]

However, feel free to file an issue about this new result.

[jdm]

This issue isn't very useful in its present state.