re PR tree-optimization/87940 (FAIL: gcc.dg/warn-strlen-no-nul.c)
2018-11-09 Bernd Edlinger <bernd.edlinger@hotmail.de> PR tree-optimization/87940 * expr.c (string_constant): Don't strip NOPS in subexpressions. Fold PLUS_EXPR correctly. From-SVN: r265992
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