So here's why it hangs if you don't use C

[v1993]

TriPlayer/Sysmodule/source/main.cpp

Lines 14 to 25 in 737adfd

	// It hangs if I don't use C... I wish I knew why!
	extern "C" {
	u32 __nx_applet_type = AppletType_None;
	u32 __nx_fs_num_sessions = 1;
	size_t nx_inner_heap_size = INNER_HEAP_SIZE;
	char nx_inner_heap[INNER_HEAP_SIZE];
	void __libnx_initheap(void);
	void __appInit(void);
	void __appExit(void);
	}

Came across this comment and couldn't resist, sorry: it's most likely name mangling of C++ - functions end up with names different from what they are in code, making loader unable to locate corresponding symbols and fail to load sysmodule.

[tallbl0nde]

That... makes a lot of sense. Thanks for clearing that up! :)
(I don't even remember writing that comment!)