How to break when a specific exception type is thrown in GDB?

Question

According to the documentation I can break on specific exception type by using conditional breakpoints. However the syntax for the condition isn\'t very clear to me:

Answer 1

In case the problem is that there is no valid stack trace (not breaking in raise), it seems to be a problem when re-compiling without re-starting gdb. ( i.e. calling "make" inside the gdb console).

After having re-started gdb, it breaks correctly in raise.c (my versions : GNU gdb 8.1.0.20180409-git, gcc 7.4.0, GNU make 4.1)