strtoul (GNU Gnulib)

Gnulib module: strtoul

Portability problems fixed by Gnulib:

This function is missing on some old platforms.
This function does not parse the leading ‘0’ when the input string is "0x" and the base is 16 or 0 on some platforms: Minix 3.3, mingw, MSVC 14.
This function does not parse binary integers (with a ‘0b’ or ‘0B’ prefix) when the base is 2 or 0 on many platforms.

Portability problems not fixed by Gnulib: