87340 – Stack overflow problem for c++filt

Bug 87340 - Stack overflow problem for c++filt

Summary: Stack overflow problem for c++filt

Status:	NEW

Alias:	None

Product:	gcc
Classification:	Unclassified
Component:	demangler (show other bugs)
Version:	unknown

Importance:	P3 normal
Target Milestone:	---
Assignee:	Not yet assigned to anyone

URL:
Keywords:	ice-on-invalid-code

Depends on:
Blocks:

Reported:	2018-09-17 21:34 UTC by Li Peng
Modified:	2021-07-22 21:29 UTC (History)
CC List:	2 users (show)

See Also:
Host:
Target:
Build:
Known to work:
Known to fail:
Last reconfirmed:	2018-09-18 00:00:00

Attachments
PoCs to demonstrate segfaults of c++filt (11.75 KB, application/gzip) 2018-09-17 21:34 UTC, Li Peng	Details
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Description Li Peng 2018-09-17 21:34:58 UTC

Created attachment 44709 [details]
PoCs to demonstrate segfaults of c++filt

Hi There

Our fuzzer caught stack overflows in c++filt of the latest binutils code base, those inputs will cause the segment faults and I have confirmed them with address sanitizer too. Please use the “c++filt < input” to reproduce the bug. 
If you have any questions, please let me know.

The ASAN dumps the stack trace as follows:

==25314==ERROR: AddressSanitizer: stack-overflow on address 0x7ffc1fb15f58 (pc 0x0000004a5672 bp 0x7ffc1fb167a0 sp 0x7ffc1fb15f40 T0)
    #0 0x4a5671 in malloc /home/peter668/AFL_KLEE_FUZZ/toolchain/LLVM/llvm/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:39
    #1 0x5845d4 in xmalloc /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./xmalloc.c:147:12
    #2 0x56912c in string_need /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4906:21
    #3 0x56a23a in string_append /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4961:3
    #4 0x56a23a in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4578
    #5 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #6 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #7 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #8 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #9 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #10 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #11 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #12 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #13 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #14 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #15 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #16 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #17 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #18 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #19 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #20 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #21 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #22 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #23 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #24 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #25 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #26 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #27 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #28 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #29 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #30 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #31 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #32 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #33 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #34 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #35 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #36 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #37 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #38 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #39 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #40 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #41 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #42 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #43 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #44 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #45 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #46 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #47 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #48 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #49 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #50 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #51 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #52 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #53 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #54 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #55 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #56 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #57 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #58 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #59 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #60 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #61 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #62 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #63 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #64 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #65 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #66 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #67 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #68 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #69 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #70 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #71 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #72 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #73 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #74 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #75 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #76 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #77 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #78 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #79 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #80 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #81 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #82 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #83 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #84 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #85 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #86 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #87 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #88 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #89 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #90 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #91 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #92 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #93 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #94 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #95 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #96 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #97 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #98 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #99 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #100 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #101 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #102 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #103 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #104 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #105 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #106 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #107 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #108 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #109 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #110 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #111 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #112 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #113 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #114 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #115 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #116 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #117 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #118 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #119 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #120 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #121 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #122 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #123 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #124 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #125 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #126 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #127 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #128 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #129 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #130 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #131 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #132 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #133 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #134 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #135 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #136 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #137 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #138 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #139 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #140 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #141 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #142 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #143 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #144 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #145 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #146 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #147 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #148 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #149 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #150 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #151 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #152 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #153 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
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    #314 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #315 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #316 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #317 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #318 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #319 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #320 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #321 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #322 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #323 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #324 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #325 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #326 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #327 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #328 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #329 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #330 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #331 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8
    #332 0x56a417 in demangle_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4659:9
    #333 0x563e74 in demangle_nested_args /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4713:12
    #334 0x563e74 in do_type /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:3719
    #335 0x56a97b in do_arg /home/peter668/lipeng/TMP/binutils-gdb/libiberty/./cplus-dem.c:4332:8

SUMMARY: AddressSanitizer: stack-overflow /home/peter668/AFL_KLEE_FUZZ/toolchain/LLVM/llvm/projects/compiler-rt/lib/asan/asan_malloc_linux.cc:39 malloc
==25314==ABORTING

Thanks
Peng

Comment 1 Martin Liška 2018-09-18 08:08:46 UTC

Is the input a valid C++ mangled name of not?

Comment 2 Jonathan Wakely 2018-09-18 09:04:46 UTC

No. None of them look valid.

Comment 3 Martin Liška 2018-09-18 09:16:29 UTC

Then it would deserve something like segfault-on-invalid-input :)
Or should I use ice-on-invalid-code?

Comment 4 Jonathan Wakely 2018-09-18 09:55:53 UTC

The __cxa_demangle function returns 2 for each of these testcases, but the cplus_demangle function segfaults.

Comment 5 Martin Sebor 2018-09-18 15:10:24 UTC

(In reply to Martin Liška from comment #3)
> Then it would deserve something like segfault-on-invalid-input :)
> Or should I use ice-on-invalid-code?

Let's use ice-on-invalid.  Otherwise the two will end up being used interchangeably over time.