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/* { dg-do run } */
/* { dg-require-effective-target noinit } */
/* { dg-options "-O2" } */
/* { dg-skip-if "data LMA != VMA" { msp430-*-* } { "-mlarge" } } */
/* This test checks that noinit data is handled correctly.
If data LMA != VMA (e.g. for simulating the copy of data from ROM to RAM),
then var_init will always be re-initialized to 2 and this test will loop
forever. */
extern void _start (void) __attribute__ ((noreturn));
extern void abort (void) __attribute__ ((noreturn));
extern void exit (int) __attribute__ ((noreturn));
int var_common;
int var_zero = 0;
int var_one = 1;
int __attribute__((noinit)) var_noinit;
int var_init = 2;
int __attribute__((noinit)) func(); /* { dg-warning "attribute only applies to variables" } */
int __attribute__((section ("mysection"), noinit)) var_section1; /* { dg-warning "because it conflicts with attribute" } */
int __attribute__((noinit, section ("mysection"))) var_section2; /* { dg-warning "because it conflicts with attribute" } */
int
main (void)
{
/* Make sure that the C startup code has correctly initialized the ordinary variables. */
if (var_common != 0)
abort ();
/* Initialized variables are not re-initialized during startup, so
check their original values only during the first run of this
test. */
if (var_init == 2)
if (var_zero != 0 || var_one != 1)
abort ();
switch (var_init)
{
case 2:
/* First time through - change all the values. */
var_common = var_zero = var_one = var_noinit = var_init = 3;
break;
case 3:
/* Second time through - make sure that d has not been reset. */
if (var_noinit != 3)
abort ();
exit (0);
default:
/* Any other value for var_init is an error. */
abort ();
}
/* Simulate a processor reset by calling the C startup code. */
_start ();
/* Should never reach here. */
abort ();
}
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