A gcc_jit_location encapsulates a source code location, so that you can (optionally) associate locations in your language with statements in the JIT-compiled code, allowing the debugger to single-step through your language.
gcc_jit_location instances are optional: you can always pass NULL to any API entrypoint accepting one.
You can construct them using gcc_jit_context_new_location().
You need to enable GCC_JIT_BOOL_OPTION_DEBUGINFO on the gcc_jit_context for these locations to actually be usable by the debugger:
gcc_jit_context_set_bool_option ( ctxt, GCC_JIT_BOOL_OPTION_DEBUGINFO, 1);
Create a gcc_jit_location instance representing the given source location.
The parameter filename must be non-NULL. The call takes a copy of
the underlying string, so it is valid to pass in a pointer to an
on-stack buffer.