I've been using 0.18.7 fine for months, so today, I decided to try 0.19.0 Release.
Environment is macOS X Sierra, Xcode 8.2.1.
I've successfully compiled the code into a library object file and linked successfully with my macOS app (GUI app).
But when I create a new instance of LibRaw (LibRaw *rawProcessor = new LibRaw;), I got a crash on the following line in libraw_alloc.h:
libraw_memmgr(unsigned ee) : extra_bytes(ee)