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/* PR tree-optimization/47391 */ /* { dg-do compile } */ /* { dg-options "-O2 -fdump-tree-optimized" } */ const volatile int v = 1; int i = 0; void foo (void) { i = v; } int main (void) { foo (); return 0; } /* { dg-final { scan-tree-dump-not "i = 1;" "optimized" } } */ /* { dg-final { cleanup-tree-dump "optimized" } } */