Using StreamReader with TranscodingStreams leads to random Segmentation faults

[nhz2]

Discovered in felipenoris/XLSX.jl#273 (comment)

MWE:

using TranscodingStreams
using EzXML

undirected = """
<?xml version="1.0" encoding="UTF-8"?>
<graphml>
    <graph edgedefault="undirected">
        <node id="n0"/>
        <node id="n1"/>
        <edge source="n0" target="n1"/>
    </graph>
</graphml>
"""

reader = EzXML.StreamReader(NoopStream(IOBuffer(undirected)))

GC.gc()
GC.gc()
GC.gc()

while (item = iterate(reader)) != nothing
    @show reader.type, reader.name
end

Internal error: during type inference of
var"#17"(0x00007f7c7649b4f0, Ptr{UInt8}, Int32)
Encountered unexpected error in runtime:
MethodError(f=Core.Compiler.widenconst, args=(0x00007f7c7649b4f0,), world=0x0000000000001734)
jl_method_error_bare at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:2254
jl_method_error at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:2272
jl_lookup_generic_ at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:3106 [inlined]
ijl_apply_generic at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:3121
#408 at ./compiler/typeutils.jl:57
anymap at ./compiler/utilities.jl:43 [inlined]
argtypes_to_type at ./compiler/typeutils.jl:57
abstract_call_known at ./compiler/abstractinterpretation.jl:2199
abstract_call at ./compiler/abstractinterpretation.jl:2282
abstract_call at ./compiler/abstractinterpretation.jl:2275
abstract_call at ./compiler/abstractinterpretation.jl:2420
abstract_eval_call at ./compiler/abstractinterpretation.jl:2435
abstract_eval_statement_expr at ./compiler/abstractinterpretation.jl:2451
abstract_eval_statement at ./compiler/abstractinterpretation.jl:2749
abstract_eval_basic_statement at ./compiler/abstractinterpretation.jl:3065
typeinf_local at ./compiler/abstractinterpretation.jl:3319
typeinf_nocycle at ./compiler/abstractinterpretation.jl:3401
_typeinf at ./compiler/typeinfer.jl:244
typeinf at ./compiler/typeinfer.jl:215
typeinf_ext at ./compiler/typeinfer.jl:1101
typeinf_ext_toplevel at ./compiler/typeinfer.jl:1139
typeinf_ext_toplevel at ./compiler/typeinfer.jl:1135
jfptr_typeinf_ext_toplevel_39604.1 at /home/nathan/.julia/juliaup/julia-1.11.0+0.x64.linux.gnu/lib/julia/sys.so (unknown line)
jl_apply at /cache/build/builder-amdci5-1/julialang/julia-master/src/julia.h:2157 [inlined]
jl_type_infer at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:390
jl_generate_fptr_impl at /cache/build/builder-amdci5-1/julialang/julia-master/src/jitlayers.cpp:511
jl_compile_method_internal at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:2536 [inlined]
jl_compile_method_internal at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:2423
_jl_invoke at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:2940 [inlined]
ijl_apply_generic at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:3125
unknown function (ip: 0x7f7c6fc95b5f)
xmlParserInputBufferGrow at /workspace/srcdir/libxml2-2.13.3/xmlIO.c:2362
xmlTextReaderPushData at /workspace/srcdir/libxml2-2.13.3/xmlreader.c:790
xmlTextReaderRead at /workspace/srcdir/libxml2-2.13.3/xmlreader.c:1219
macro expansion at /home/nathan/.julia/packages/EzXML/DL8na/src/error.jl:50 [inlined]
read_node at /home/nathan/.julia/packages/EzXML/DL8na/src/streamreader.jl:199 [inlined]
iterate at /home/nathan/.julia/packages/EzXML/DL8na/src/streamreader.jl:190 [inlined]
iterate at /home/nathan/.julia/packages/EzXML/DL8na/src/streamreader.jl:190
unknown function (ip: 0x7f7c6fca6b03)
top-level scope at /home/nathan/Documents/breakezxml/stuff.jl:21
jl_toplevel_eval_flex at /cache/build/builder-amdci5-1/julialang/julia-master/src/toplevel.c:934
jl_toplevel_eval_flex at /cache/build/builder-amdci5-1/julialang/julia-master/src/toplevel.c:886
ijl_toplevel_eval_in at /cache/build/builder-amdci5-1/julialang/julia-master/src/toplevel.c:994
eval at ./boot.jl:430 [inlined]
include_string at ./loading.jl:2628
_include at ./loading.jl:2688
include at ./Base.jl:557
jfptr_include_46600.1 at /home/nathan/.julia/juliaup/julia-1.11.0+0.x64.linux.gnu/lib/julia/sys.so (unknown line)
exec_options at ./client.jl:323
_start at ./client.jl:531
jfptr__start_72051.1 at /home/nathan/.julia/juliaup/julia-1.11.0+0.x64.linux.gnu/lib/julia/sys.so (unknown line)
jl_apply at /cache/build/builder-amdci5-1/julialang/julia-master/src/julia.h:2157 [inlined]
true_main at /cache/build/builder-amdci5-1/julialang/julia-master/src/jlapi.c:900
jl_repl_entrypoint at /cache/build/builder-amdci5-1/julialang/julia-master/src/jlapi.c:1059
main at /cache/build/builder-amdci5-1/julialang/julia-master/cli/loader_exe.c:58
unknown function (ip: 0x7f7c8706cd8f)
__libc_start_main at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
unknown function (ip: 0x4010b8)

[1905095] signal 11 (1): Segmentation fault
in expression starting at /home/nathan/Documents/breakezxml/stuff.jl:21
jl_is_layout_opaque at /cache/build/builder-amdci5-1/julialang/julia-master/src/julia.h:1330 [inlined]
jl_datatype_layout at /cache/build/builder-amdci5-1/julialang/julia-master/src/julia.h:1338 [inlined]
jl_f_tuple at /cache/build/builder-amdci5-1/julialang/julia-master/src/builtins.c:936 [inlined]
jl_f_tuple at /cache/build/builder-amdci5-1/julialang/julia-master/src/builtins.c:926
jl_method_error at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:2270
jl_lookup_generic_ at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:3106 [inlined]
ijl_apply_generic at /cache/build/builder-amdci5-1/julialang/julia-master/src/gf.c:3121
#17 at /home/nathan/.julia/packages/EzXML/DL8na/src/document.jl:262
unknown function (ip: 0x7f7c6fc95b5f)
xmlParserInputBufferGrow at /workspace/srcdir/libxml2-2.13.3/xmlIO.c:2362
xmlTextReaderPushData at /workspace/srcdir/libxml2-2.13.3/xmlreader.c:790
xmlTextReaderRead at /workspace/srcdir/libxml2-2.13.3/xmlreader.c:1219
macro expansion at /home/nathan/.julia/packages/EzXML/DL8na/src/error.jl:50 [inlined]
read_node at /home/nathan/.julia/packages/EzXML/DL8na/src/streamreader.jl:199 [inlined]
iterate at /home/nathan/.julia/packages/EzXML/DL8na/src/streamreader.jl:190 [inlined]
iterate at /home/nathan/.julia/packages/EzXML/DL8na/src/streamreader.jl:190
unknown function (ip: 0x7f7c6fca6b03)
top-level scope at /home/nathan/Documents/breakezxml/stuff.jl:21
jl_toplevel_eval_flex at /cache/build/builder-amdci5-1/julialang/julia-master/src/toplevel.c:934
jl_toplevel_eval_flex at /cache/build/builder-amdci5-1/julialang/julia-master/src/toplevel.c:886
ijl_toplevel_eval_in at /cache/build/builder-amdci5-1/julialang/julia-master/src/toplevel.c:994
eval at ./boot.jl:430 [inlined]
include_string at ./loading.jl:2628
_include at ./loading.jl:2688
include at ./Base.jl:557
jfptr_include_46600.1 at /home/nathan/.julia/juliaup/julia-1.11.0+0.x64.linux.gnu/lib/julia/sys.so (unknown line)
exec_options at ./client.jl:323
_start at ./client.jl:531
jfptr__start_72051.1 at /home/nathan/.julia/juliaup/julia-1.11.0+0.x64.linux.gnu/lib/julia/sys.so (unknown line)
jl_apply at /cache/build/builder-amdci5-1/julialang/julia-master/src/julia.h:2157 [inlined]
true_main at /cache/build/builder-amdci5-1/julialang/julia-master/src/jlapi.c:900
jl_repl_entrypoint at /cache/build/builder-amdci5-1/julialang/julia-master/src/jlapi.c:1059
main at /cache/build/builder-amdci5-1/julialang/julia-master/cli/loader_exe.c:58
unknown function (ip: 0x7f7c8706cd8f)
__libc_start_main at /lib/x86_64-linux-gnu/libc.so.6 (unknown line)
unknown function (ip: 0x4010b8)
Allocations: 1384212 (Pool: 1384164; Big: 48); GC: 5
Segmentation fault (core dumped)