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There's heuristic to detect ptr[1].a[...] out of bound accesses reasoning that if ptr points to an array of aggregates a trailing incomplete array has to have size zero. The following more thoroughly constrains the cases this applies to avoid false positive diagnostics. 2022-05-25 Richard Biener <rguenther@suse.de> PR tree-optimization/105726 * gimple-ssa-warn-restrict.cc (builtin_memref::set_base_and_offset): Constrain array-of-flexarray case more. * g++.dg/warn/Warray-bounds-27.C: New testcase.
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