Bug 476125

Created attachment 162580 [details]
output of running: valgrind -v ./main

Summary:
Valgrind can read and parse DWARF 32 debug symbols, but it fails when dealing with DWARF 64.

I have compiled a simple program called main.cpp, whose content is pasted later in the description. The code allocates few bytes on the heap using operator new, but it does not free it using delete[] operator. The program is compiled using gcc 12.2 with -gdwarf64 flag that should turn on DWARF 64 debug symbols. When trying to run the program with "valgrind ./main", valgrind prints information that it cannot read debug information. Exact content of the message from valgrind is in the attachment.
When I run valgrind ./main on the binary compiled without -gdwarf64 flag, valgrind finds the memory leaks as expected.

Using llvm-dwarfdump I have made sure that the binary does contain debug symbols in DWARF 64 format.
The output from running: llvm-dwarfdump ./main | grep -i "dwarf"
Compile Unit: length = 0x00000000000000f8, format = DWARF64, version = 0x0005, unit_type = DW_UT_compile, abbr_offset = 0x0000, addr_size = 0x08 (next unit at 0x00000104)

Based on the information provided by GCC:
https://gcc.gnu.org/onlinedocs/gcc/Debugging-Options.html
the default debug symbol format is DWARF 32 and indeed when I check using llvm-dwarfdump the content of the ./main binary it indeed contains DWARF 32 information.

main.cpp:

#include <new>

int main()
{
    char* array = new char[10];
}

CMakeLists.txt
cmake_minimum_required(VERSION 3.18)

project(ValgrindTest)

set(CMAKE_BUILD_TYPE DEBUG)
add_compile_options(-g -gdwarf64 -std=c++20)

add_executable(main main.cpp)

Reproduction steps:
1) Create main.cpp and CMakeLists.txt
2) Next to them create build directory
3) cd build && cmake ../
4) make
5) valgrind ./main

Tools used:
Gcc 12.2
CMake 3.18.4
Valgrind 3.21, I have also tried to run it on Valgrind's current master branch, but valgrind still could not read debug information.