Stringification of big ranges

[AlexandreBossard]

I happen to have a CHECK(buffer1 == expectedbuffer), with each buffers being whopping a 5MB.

When you use the -s switch, catch2 is happy to print all of it, really really slowly.

Expected behavior I would have expect the stringification of ranges to have some kind of limit. Both for performance and readability reason.

workaround

• Specialize StringMaker to do it, but this cumbersome, particularly with ODR.

• Use a hashed value of the buffer in the CHECK expression. Not pratical when you have lots of them.