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The testcase shows we mishandle the case where there's a pass-through of a pointer through a function like memcpy. The following adjusts handling of this copy case to require a taken address and adjust the PHI case similarly. PR tree-optimization/106868 * gimple-ssa-warn-access.cc (pass_waccess::gimple_call_return_arg_ref): Inline into single user ... (pass_waccess::check_dangling_uses): ... here and adjust the call and the PHI case to require that ref.aref is the address of the decl. * gcc.dg/Wdangling-pointer-pr106868.c: New testcase.
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