signal numbers. I've been extra cautious with the ifdef's here. Probably more
than is necessary... */
-char *
-os_strsignal(int n)
+const char *
+os_strsignal(const int n)
{
switch (n)
{
exit codes into text, but this function is implemented this way so that if any
OS does have such a thing, it could be used instead of this build-in one. */
-char *
-os_strexit(int n)
+const char *
+os_strexit(const int n)
{
switch (n)
{