Date: 2018dec7 OS: Linux Language: C/C++ Q. Control what happens with malloc() / free() programming errors A. The mallopt(M_CHECK_ACTION, ...) can control when happens with you double free or other allocation mistakes. Do:

mallopt(M_CHECK_ACTION, option);

Where option is:

0 Ignore error conditions; continue execution (with undefined results). 1 Print a detailed error message and continue execution. 2 Abort the program. 3 Print detailed error message, stack trace, and memory mappings, and abort the program. The default. 5 Print a simple error message and continue execution. 7 Print simple error message, stack trace, and memory mappings, and abort the program.

Notice by misusing this you could generate a stack trace any time you want.