Can't find entry point (_ZSt28__throw_bad_array_new_lengthv) in DLL (filepath)

Question

The error

The exact error is the title of the question.

It happens when I use vectorName.push_back() function. I recreated it with just this simple code:

#include <iostream>
#include <vector>

using namespace std;

int main() {
    vector <int> vec = {};
    vec.push_back(2);
    return 0;
}

Compiler and setup information

I'm using msys2, and I set it up using this guide

I have no idea if this is relevant or not, but I used tdm-gcc before this.

Research

A fix is almost nowhere to be found, or I just didn't look hard enough. I have found some posts about the _ZSt28__throw_bad_array_new_lengthv, but not with entry point. And because I didn't find anything about this exact issue, I didn't try anything.

Tetrachloride

Do you get this error when you build your program, or when you run your program? – Ctenoid

After a quick search it seems to be because a possible mismatch between the GCC compiler version installed, and the GCC standard C++ installation. What version of GCC do you have installed? Have you tried to install different versions of GCC? – Ctenoid

Move C:\msys64\mingw64\bin to the top of the PATH. If this doesn't help, build with -static or copy the DLLs your program uses next to the .exe (ntldd -R 123.exe to get the list of dlls, ignore those not present in C:\msys64\mingw64\bin). – Muggins

It happened when I ran the program that was compiled. The version is 12.2.0. The build doesn't give out any errors. I went back to tdm-gcc because that still works. – Tetrachloride

Since I can't reproduce this in the MSYS2 shell, I would guess this is an issue with your VSCode environment. What happens if you run g++ -Wall test.cpp && ./a.exe to compile and run your code in MSYS2's MinGW 64-bit shell? What is the output of which g++? – Radix

@DavidGrayson I'd guess it runs without an error in the msys2 shell, but not when double-clicked it in Windows explorer. – Maneating

Answer 1

Problem: "the procedure entry point _zst28__throw_bad could not be located in the dynamic link library"

(with msys2 mingw64)

Solution: Modify the system environment variables (requires admin rights)

Start the windows commandline (cmd.exe) as admin (right-click run as administrator). Then enter this command:

"C:\Windows\system32\rundll32.exe" sysdm.cpl,EditEnvironmentVariables

Then edit the PATH at the bottom (under Systemvariables), and make sure that C:\msys64\mingw64\bin is right at the top position.

Done.

Check as follows in cmd:

echo %PATH%

You can also non-persistenly edit the PATH from a cmd as follows (also does not require admin rights):

set PATH=C:\msys64\mingw64\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem

Tolerance

In most cases, you expand PATH instead of replacing it completely. – Maneating

Answer 2

i also found problem like this, on windows 10 use msys2. when i try to build minimal.cpp example with cmake, build process is work and complete without error:

But when i try to run program the error say "entry point not found", after searching what really wrong for several day, i found copying libstdc++-6.dll on same folder with program, make program working as expected.

error window screenshot (click for image)

(Hopefully its help somebody in future)

Mitzvah

Exactly this helped fix the error when I run my (“statically”) linked minimal wxWidgets app. The file libstdc++-6.dll can be found in `C:\msys64\mingw64\bin`. – Maneating