https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86274
--- Comment #15 from Martin Sebor <msebor at gcc dot gnu.org> --- Author: msebor Date: Wed Jul 4 02:19:35 2018 New Revision: 262368 URL: https://gcc.gnu.org/viewcvs?rev=262368&root=gcc&view=rev Log: PR tree-optimization/86274 - SEGFAULT when logging std::to_string(NAN) gcc/ChangeLog: PR tree-optimization/86274 * gimple-ssa-sprintf.c (fmtresult::type_max_digits): Verify precondition. (format_floating): Correct handling of infinities and NaNs. gcc/testsuite/ChangeLog: PR tree-optimization/86274 * gcc.dg/tree-ssa/builtin-sprintf-9.c: New test. * gcc.dg/tree-ssa/builtin-sprintf-warn-1.c: Adjust. * gcc.dg/tree-ssa/builtin-sprintf-warn-10.c: Same. * gcc.dg/tree-ssa/builtin-sprintf-warn-15.c: Same. * gcc.dg/tree-ssa/builtin-sprintf-warn-7.c: Same. * gcc.dg/tree-ssa/builtin-sprintf.c: Same. * gcc.dg/tree-ssa/pr83198.c: Same. Added: trunk/gcc/testsuite/gcc.dg/torture/builtin-sprintf.c trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-9.c Modified: trunk/gcc/ChangeLog trunk/gcc/gimple-ssa-sprintf.c trunk/gcc/testsuite/ChangeLog trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-1.c trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-10.c trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-15.c trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-7.c trunk/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf.c trunk/gcc/testsuite/gcc.dg/tree-ssa/pr83198.c