[Bug c++/106434] [12/13 Regression] Spurious -Wnull-dereference when using std::unique_copy() since r12-5187-g1ae8edf5f73ca5c3

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106434

--- Comment #4 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is a compiler bug, not a library bug, and a reduced testcase will fail
before r12-5187 because it was already latent in the compiler.