ecos kernel suddenly stops booting

I cut out pretty much everything and got it to the point that if I add/remove a local variable to cyg_user_start it will not boot/boot. How can a local variable within the cyg_user_start function prevent the cyg_start and therefore cyg_user_start from being called? Functions follow.

With this code snippet the system does not boot and does not make it into the cyg_user_start routine - I never see the LED&#39;s update:# include <cyg/kernel/kapi.h># include <stdio.h># include <cyg/hal/io.h> // IOWR

void cyg_user_start(void);

void cyg_user_start(void)

{

FILE *US_LogFp = NULL;

IOWR(0x901040, 0, 0xAA); // Update LED&#39;s so we know we got here.

if (!US_LogFp) { IOWR(0x901040, 0, 0x55); }

printf("\n\nRev Test, %s.\n", __DATE__);

while(true);

return;

}

If I change the cyg_user_start routine to comment out the local variable it does boot and I see the LED&#39;s update and the print message:

void cyg_user_start(void)

{

// FILE *US_LogFp = NULL;

IOWR(0x901040, 0, 0xAA); // Update LED&#39;s so we know we got here.

// if (!US_LogFp) { IOWR(0x901040, 0, 0x55); }

printf("\n\nRev Test, %s.\n", __DATE__);

while(true);

return;

}