[Bug c++/25727] New: infcall std::vector operator[] passes invalid parameter value

[Bug c++/25727] New: infcall std::vector operator[] passes invalid parameter value

[jan.kratochvil at redhat dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25727

            Bug ID: 25727
           Summary: infcall std::vector operator[] passes invalid
                    parameter value
           Product: gdb
           Version: 8.3
            Status: NEW
          Severity: normal
          Priority: P2
         Component: c++
          Assignee: unassigned at sourceware dot org
          Reporter: jan.kratochvil at redhat dot com
  Target Milestone: ---

gdb-8.3.50.20190824-30.fc31.x86_64

cat >65.C <<EOH
#include <stdio.h>
#include <vector>
static std::vector<bool> vec(10);
int main() {
  return vec[0];
}
EOH

g++ -o 65 65.C -Wall -g -fsanitize=undefined -D_GLIBCXX_DEBUG;gdb ./65 -ex 'b
5' -ex r -ex "b 'std::__debug::vector<bool, std::allocator<bool>
>::operator[](unsigned long)'" -ex 'p vec[9]'

/usr/include/c++/9/bits/stl_bvector.h:217:6: runtime error: signed integer
overflow: 3746994889972252984 * 8 cannot be represented in type 'long int'
$1 = {_M_p = 0x405008, _M_mask = 140737338667718}

g++ -o 65 65.C -Wall -g -fsanitize=undefined -D_GLIBCXX_DEBUG;gdb ./65 -ex 'b
5' -ex r -ex 'p vec[9]'

Breakpoint 2, std::__debug::vector<bool, std::allocator<bool> >::operator[]
(this=0x7fffffffd3a0, __n=4238912) at /usr/include/c++/9/debug/vector:427
427             __glibcxx_check_subscript(__n);
...
(gdb) x/gx 4238912
0x40ae40 <_ZL3vec>:     0x0000000000000000

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug c++/25727] infcall std::vector operator[] passes invalid parameter value

[pakibuz at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25727

jonsi <pakibuz at gmail dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |pakibuz at gmail dot com

--- Comment #1 from jonsi <pakibuz at gmail dot com> ---
i think fine this working now 
https://boxofficecollectiondb.com/isaimini-moviesda-download/
https://boxofficecollectiondb.com/tamilrockers-movies-download/

-- 
You are receiving this mail because:
You are on the CC list for the bug.

[Bug c++/25727] infcall std::vector operator[] passes invalid parameter value

[tromey at sourceware dot org]

https://sourceware.org/bugzilla/show_bug.cgi?id=25727

Tom Tromey <tromey at sourceware dot org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at sourceware dot org

-- 
You are receiving this mail because:
You are on the CC list for the bug.