Why I cannot see content of std::vector in the gdb?
unlvsur unlvsur
unlvsur@live.com
Wed Oct 6 02:17:52 GMT 2021
c++ - Inspecting standard container (std::map) contents with gdb - Stack Overflow<https://stackoverflow.com/questions/427589/inspecting-standard-container-stdmap-contents-with-gdb>
I just saw your (jwakely) answer that libstdc++ supports pretty printer for gdb. But it does not work? Any configs I missed here?
g++ -o a a.cc -g -std=c++20 -I../fast_io/include
gdb ./a
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./a...
(gdb) dir
Reinitialize source path to empty? (y or n) n
(gdb) l
1 #include<vector>
2 #include<fast_io.h>
3
4 int main()
5 {
6 std::vector<int> vec{2,4,6,1,204,6,5};
7 for(auto const& e : vec)
8 println(e);
9 }
(gdb) break 7
Breakpoint 1 at 0x40129e: file a.cc, line 7.
(gdb) r
Starting program: /home/cqwrteur/fast_io_cleanup/temp/a
Breakpoint 1, main () at a.cc:7
7 for(auto const& e : vec)
(gdb) print vec
$1 = {<std::_Vector_base<int, std::allocator<int> >> = {
_M_impl = {<std::allocator<int>> = {<__gnu_cxx::new_allocator<int>> = {<No data fields>}, <No data fields>}, <std::_Vector_base<int, std::allocator<int> >::_Vector_impl_data> = {_M_start = 0x4072a0, _M_finish = 0x4072bc,
_M_end_of_storage = 0x4072bc}, <No data fields>}}, <No data fields>}
(gdb)
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