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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [libmudflap/] [testsuite/] [libmudflap.c/] [pass53-frag.c] - Blame information for rev 738

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Line No. Rev Author Line
1 738 jeremybenn
int foo1 ()
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{
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  union { int l; char c[sizeof (int)]; } k1;
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  char *m;
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  k1.l = 0;
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  /* This test variant triggers ADDR_EXPR of k explicitly in order to
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     ensure it's registered with the runtime.  */
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  m = k1.c;
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  k1.c [sizeof (int)-1] = m[sizeof (int)-2];
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}
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int foo2 ()
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{
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  union { int l; char c[sizeof (int)]; } k2;
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  k2.l = 0;
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  /* Since this access is known-in-range, k need not be registered
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     with the runtime, but then this access better not be instrumented
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     either.  */
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  k2.c [sizeof (int)-1] ++;
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  return k2.l;
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}
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int foo3idx = sizeof (int)-1;
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int foo3 ()
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{
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  union { int l; char c[sizeof (int)]; } k3;
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  k3.l = 0;
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  /* NB this test uses foo3idx, an extern variable, to defeat mudflap
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     known-in-range-index optimizations.  */
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  k3.c [foo3idx] ++;
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  return k3.l;
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}
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int main ()
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{
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  foo1 ();
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  foo2 ();
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  foo3 ();
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  return 0;
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}

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