In the build output of our C++ program, the following warning is ignored and does not appear in the Warnings plugin analysis:
In member function 'void CInput::UpdateText(int, int, int)':
cc1plus: warning: 'void* __builtin_memset(void*, int, long unsigned int)': specified size 18446744073709551612 exceeds maximum object size 9223372036854775807 [-Wstringop-overflow=]

I assume the output of cc1/cc1plus is not handled by the GCC parser.

For reference, the pipeline step analyzing the build output is the following:
recordIssues enabledForFailure: true, qualityGates: [[threshold: 1, type: 'NEW']], tool: gcc()