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User-Agent: Mozilla/4.77 [en] (X11; U; Linux 2.4.3-12 alpha)

Description of problem:
Given the following source code, 

void
f()
{
	int a[ 10];
	
	a[ -1] = -1;	/* bug here */
	a[ 0] = 0;
	a[ 9] = 9;
	a[ 10] = 10;	/* bug here */
}

then gcc for RH 7.1 fails to find the two bugs in this code.

I even tried -ansi -pedantic -Wall, but that didn't help either.


Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. compile example fragment code.
2.
3.
	

Actual Results:  total silence from the compiler.

Expected Results:  Where an array index is a constant, it might of value
to ensure that constant is in range for the array.

Additional info: