At 11:31 AM 1/10/97 PST8PDT, Bob Walker wrote:
>We  just upgraded to MPE 5.5 Express2(from 5.0) on the weekend  and
>now JTMAIL(by Jim Wowchuk) is now behaving strangly.
[snip...]
>gszLocalHost = getenv("HOST");
>ShowVars(1);   /* debug - show all gsz.... variables if not NULL */
>gszMailHost = getenv("MAILHOST");
>ShowVars(2);
>gszMailPort = getenv("PORT");
>ShowVars(3);
>gszUser = getenv("MAILUSER");
>ShowVars(4);

I suspect that where in previous releases getenv() was allocated and
returned a pointer to a unique memory area, it is now returning a pointer to
a single static memory area.

Two suggestions to fix it.

1)  Replace getenv() in the source with say jgetenv(), a local function:

        char *jgetenv(char *env)
        {
                return strdup(getenv(env));
                }

2)  Replace each getenv() call in with a MACRO GETENV providing the same:
        #define GETENV(a) strdup(getenv(a))

In both cases, you may need to create a strdup() function:

        char *strdup(char *src)
        {
          char * tmp;

          tmp = malloc(strlen(src) + 1);
          strcpy(tmp, src);
          return tmp;
          }

or macro
  #define strdup(a) strcpy(malloc(strlen(a) + 1), src)


Cheers.
----
Jim Wowchuk                Vanguard Computer Services
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