In article <20101003070745.gc23...@apb-laptoy.apb.alt.za>, Alan Barrett <a...@cequrux.com> wrote: >On Sat, 02 Oct 2010, Christos Zoulas wrote: >> >I suggest a BUGS section in putenv(3) stating that that the interface >> >uses non-const char* for compatibility with POSIX brain damage, but the >> >implementation guarantees to treat it as read-only. >> >> Actually the string must be writeable because POSIX requires you >> to use the actual string passed to putenv() inside the environment >> array. All strings in the environment array must be writable. > >If you mess with the environment using putenv(const string), then you >should expect the relevant portion to no longer be writable by your >program; but the implementation can still guarantee that none of the >putenv/setenv/getenv functions will write to it.
Please read http://www.opengroup.org/onlinepubs/009695399/functions/putenv.html Note issue 5. christos
