[Bug binutils/20685] New: Infinite recursion and crash in c++ demangler

[wpk at culm dot net]

https://sourceware.org/bugzilla/show_bug.cgi?id=20685

            Bug ID: 20685
           Summary: Infinite recursion and crash in c++ demangler
           Product: binutils
           Version: 2.26
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: binutils
          Assignee: unassigned at sourceware dot org
          Reporter: wpk at culm dot net
  Target Milestone: ---

For
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this mangled C++ name demangler crashes in infinite recursion:

#0  d_print_comp_inner (address@hidden, options=267,
dc=0x7fffffffcab0) at ../../libiberty/cp-demangle.c:4976
#1  0x00007ffff7b79bc4 in d_print_comp (dpi=0x7fffffffc580, options=<optimized
out>, dc=<optimized out>) at ../../libiberty/cp-demangle.c:5394
#2  0x00007ffff7b77253 in d_print_comp_inner (address@hidden,
options=267, dc=0x7fffffffcac8) at ../../libiberty/cp-demangle.c:4527
(...)
#29 0x00007ffff7b79cd7 in d_print_comp (dc=<optimized out>, options=<optimized
out>, dpi=<optimized out>) at ../../libiberty/cp-demangle.c:5394
#30 d_print_mod (address@hidden, address@hidden,
mod=0x7fffffffcdc8) at ../../libiberty/cp-demangle.c:5607
#31 0x00007ffff7b7a467 in d_print_mod_list (address@hidden,
address@hidden, address@hidden,
address@hidden)
    at ../../libiberty/cp-demangle.c:5536
#32 0x00007ffff7b7abb1 in d_print_function_type (address@hidden,
address@hidden, mods=0x7fffff8006c0, dc=0x7fffffffce10)
    at ../../libiberty/cp-demangle.c:5677
#33 0x00007ffff7b776b5 in d_print_comp_inner (address@hidden,
options=<optimized out>, dc=0x7fffffffce10) at
../../libiberty/cp-demangle.c:4861
#34 0x00007ffff7b79bc4 in d_print_comp (dpi=0x7fffffffc580, options=<optimized
out>, dc=<optimized out>) at ../../libiberty/cp-demangle.c:5394
#35 0x00007ffff7b78ff7 in d_print_comp_inner (address@hidden,
options=267, dc=0x7fffffffce28) at ../../libiberty/cp-demangle.c:4468
#36 0x00007ffff7b79bc4 in d_print_comp (dpi=0x7fffffffc580, options=<optimized
out>, dc=<optimized out>) at ../../libiberty/cp-demangle.c:5394
#37 0x00007ffff7b7749a in d_print_comp_inner (address@hidden,
options=267, dc=0x7fffffffce70) at ../../libiberty/cp-demangle.c:4358
#38 0x00007ffff7b79bc4 in d_print_comp (dpi=0x7fffffffc580, options=<optimized
out>, dc=<optimized out>) at ../../libiberty/cp-demangle.c:5394
#39 0x00007ffff7b76a97 in d_print_comp_inner (address@hidden,
options=267, dc=0x7fffffffce88) at ../../libiberty/cp-demangle.c:4976
#40 0x00007ffff7b79bc4 in d_print_comp (dpi=0x7fffffffc580, options=<optimized
out>, dc=<optimized out>) at ../../libiberty/cp-demangle.c:5394
#41 0x00007ffff7b77253 in d_print_comp_inner (address@hidden,
options=267, dc=0x7fffffffced0) at ../../libiberty/cp-demangle.c:4527
#42 0x00007ffff7b79bc4 in d_print_comp (dpi=0x7fffffffc580, options=<optimized
out>, dc=<optimized out>) at ../../libiberty/cp-demangle.c:5394
(...)

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