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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [debug/] [vta-1.c] - Rev 399
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/* https://bugzilla.redhat.com/show_bug.cgi?id=521991#c5 Distilled from Linux XFS source code. foo, inlined into bar, ends up with debug stmts referencing the addressable variable b. Optimization made it non-addressable, and then completely optimized away, before we got a chance to rename (and discard) the occurrence in the debug stmt. When we did, we crashed, attempting to rename an unreference variable. */ /* { dg-do compile } */ static inline int foo (void *x, unsigned y) { unsigned z = *(unsigned long *) x % y; *(unsigned long *) x = *(unsigned long *) x / y; return z; } struct S { unsigned t; }; void bar (struct S *x, int *y) { int a = 0; unsigned long b = x->t; foo (&b, x->t); for (;; a++) if (b) *y = 1; }
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