Thomas Haller authored May 01, 2019 and Lubomir Rintel committed May 15, 2019

This actually allows the compiler/linker to mark the memory as read-only and any
modification will cause a segmentation fault.

I would also think that it allows the compiler to put the structure directly
beside the outer constant array (in which this pointer is embedded). That is good
locality-wise.

(cherry picked from commit 4e3955e6)