undefined reference to operator delete using SEGGER Embedded Studio

[Sven]

Hi!

I am using SEGGER Embedded Studio for some of the projects. I do utilize C++ in the projects wherever possible and have found that I cannot make the delete operator work with the toolchain setup that the Embedded Studio is providing.

When trying to alleviate this with -lstdc++ linker flag, I get cannot find -lstdc++.

On another note the new operator works.

I know that using dynamic memory allocation there are risks to consider e.g. use at your own risk. I am just trying to figure how to make the destructors work when ending the liftime of an object.

Cheers!

[Jørgen Holmefjord]

Did you include any libraries for new/delete? Where did you add the linker flag? Could you upload you project to show the issue more clearly?

[Sven]

Hi! No external libraries. Linker flag '-lstdc++' was added to the "Additional linker Options" field in the Project options. I think I got the answer (while working on a snippet you requested) why this is happening. When the "C++ Language Standard" setting is set to gnu++1y I get the linker error. When the gnu++11 is active for example no such linker error is produced. Here is a snippet open and run! github.com/.../SEGGER_delete_operator

[Jørgen Holmefjord]

I tested your example, and it looks like your findings are correct. I get the same error cannot find -lstdc++, but switching to gnu++11 resolves the error.