From 781ff3d80e88d7d0df019eb3e82ef2a3fb64429c Mon Sep 17 00:00:00 2001 From: Martin Sebor Date: Mon, 18 Jun 2018 16:32:59 +0000 Subject: PR tree-optimization/81384 - built-in form of strnlen missing gcc/ChangeLog: PR tree-optimization/81384 * builtin-types.def (BT_FN_SIZE_CONST_STRING_SIZE): New. * builtins.c (expand_builtin_strnlen): New function. (expand_builtin): Call it. (fold_builtin_n): Avoid setting TREE_NO_WARNING. * builtins.def (BUILT_IN_STRNLEN): New. * calls.c (maybe_warn_nonstring_arg): Handle BUILT_IN_STRNLEN. Warn for bounds in excess of maximum object size. * tree-ssa-strlen.c (maybe_set_strlen_range): Return tree representing single-value ranges. Handle strnlen. (handle_builtin_strlen): Handle strnlen. (strlen_check_and_optimize_stmt): Same. * doc/extend.texi (Other Builtins): Document strnlen. gcc/testsuite/ChangeLog: PR tree-optimization/81384 * gcc.c-torture/execute/builtins/lib/strnlen.c: New test. * gcc.c-torture/execute/builtins/strnlen-lib.c: New test. * gcc.c-torture/execute/builtins/strnlen.c: New test. * gcc.dg/attr-nonstring-2.c: New test. * gcc.dg/attr-nonstring-3.c: New test. * gcc.dg/attr-nonstring-4.c: New test. * gcc.dg/strlenopt-45.c: New test. * gcc.dg/strlenopt.h (strnlen): Declare. From-SVN: r261705 --- gcc/testsuite/gcc.dg/strlenopt.h | 1 + 1 file changed, 1 insertion(+) (limited to 'gcc/testsuite/gcc.dg/strlenopt.h') diff --git a/gcc/testsuite/gcc.dg/strlenopt.h b/gcc/testsuite/gcc.dg/strlenopt.h index 8f69940..a4044fd 100644 --- a/gcc/testsuite/gcc.dg/strlenopt.h +++ b/gcc/testsuite/gcc.dg/strlenopt.h @@ -9,6 +9,7 @@ void *malloc (size_t); void free (void *); char *strdup (const char *); size_t strlen (const char *); +size_t strnlen (const char *, size_t); void *memcpy (void *__restrict, const void *__restrict, size_t); void *memmove (void *, const void *, size_t); char *strcpy (char *__restrict, const char *__restrict); -- cgit v1.1