Defect Report #085

Submission Date: 03 Dec 93
Submittor: WG14
Source: Clive Feather
Item 22 - returning from main
Consider the following program:
#include <stdlib.h>
#include <stdio.h>

int *pi;

void handler (void)
printf ("Value is %d\n", *pi);

int main (void)
int i;

atexit (handler);
i = 42;
pi = &i;
return 0;
Return from main is defined to be equivalent to calling exit (subclause If the return statement was replaced by the equivalent call, the program would be strictly conforming. Is it strictly conforming without this replacement?
Note that if the answer is ``yes,'' special processing will be required for return from main, which will depend on whether the call being returned from is the initial call or a recursive one.
In subclause, page 7, add at the end of the first sentence the footnote:
In accordance with subclause, objects with automatic storage duration declared in main will no longer have storage guaranteed to be reserved in the former case even where they would in the latter.
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