std map changes value when passed to function

[winter niche]

Hi i have a map

std::map<std::pair<int, int>, Group*> map = initialize_map(gm1.size);

and i want to store the value as reference to struct , i initialize it and have it ready in main but when i pass the map to a function those values are changed

here i pass the map to function

this is the function

void print_output(std::map<std::pair<int, int>, Group*> &map, int size)  

[worn plank]

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[nocturne yarrow]

@winter niche try using address sanitizer to identify any memory errors

!asan

[worn plank]

How To Use Sanitizers

Sanitizers are tools which generate additional code in your program that can catch many common programming mistakes,
such as:

• accessing arrays out of bounds
• signed integer overflows
• race conditions

General Advice

Not all sanitizers can be combined, but when they can, use e.g.:
-fsanitize=address,undefined to combine them.
Always compile with debug info to get line numbers, variable names, etc.

GCC 4.8+

• -fsanitize=address
• -fsanitize=undefined
• -fsanitize=thread
• -g for debug info

clang 3.1+

• -fsanitize=address
• -fsanitize=undefined
• -fsanitize=thread
• -fsanitize=memory
• -g for debug info

MSVC 19.27+ and VS 2019 16.9+

• -fsanitize=address
• -Zi for debug info

Sample Program

int main(void) {
    int x;
    return x;
}

`-fsanitize=memory -g` Output

SUMMARY: MemorySanitizer: use-of-uninitialized-value /tmp/test.cpp:3:5 in main
Exiting
(3:5 is line and column of return)

Note: The sanitizer lists for GCC and clang are not exhaustive

[worn plank]

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