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/* { dg-do run } */
/* { dg-options "-O2" } */
/* This test checks that persistent and noinit data are handled correctly. */
extern void __crt0_start (void) __attribute__ ((noreturn));
extern void abort (void) __attribute__ ((noreturn));
extern void exit (int) __attribute__ ((noreturn));
int a;
int b = 0;
int c = 1;
int __attribute__((noinit)) d;
int __attribute__((persistent)) e = 2;
int
main (void)
{
/* Make sure that the C startup code has correctly initialised the ordinary variables. */
if (a != 0)
abort ();
#ifndef __MSP430X_LARGE__
/* For non-large targets we use the ordinary msp430-sim.ld linker script.
This does not support FLASH, and as a side effect it does not support
reinitialising initialised data. Hence we only test b and c if this
is the first time through this test, or large support has been enabled. */
if (e == 2)
#endif
if (b != 0 || c != 1)
abort ();
switch (e)
{
case 2:
/* First time through - change all the values. */
a = b = c = d = e = 3;
break;
case 3:
/* Second time through - make sure that d has not been reset. */
if (d != 3)
abort ();
exit (0);
default:
/* Any other value for e is an error. */
abort ();
}
/* Simulate a processor reset by calling the C startup code. */
__crt0_start ();
/* Should never reach here. */
abort ();
}
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