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| author | Martin Sebor <msebor@redhat.com> | 2018-06-18 16:32:59 +0000 |
|---|---|---|
| committer | Martin Sebor <msebor@gcc.gnu.org> | 2018-06-18 10:32:59 -0600 |
| commit | 781ff3d80e88d7d0df019eb3e82ef2a3fb64429c (patch) | |
| tree | 01c31801fe48b1c21114b772785de9eefe119e7b /gcc/builtins.def | |
| parent | 7314856c61938db90d66f4cead8e4df73ea5d3af (diff) | |
| download | gcc-781ff3d80e88d7d0df019eb3e82ef2a3fb64429c.tar.gz | |
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
Diffstat (limited to 'gcc/builtins.def')
| -rw-r--r-- | gcc/builtins.def | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/gcc/builtins.def b/gcc/builtins.def index 9776dfabddf..aacbd513a16 100644 --- a/gcc/builtins.def +++ b/gcc/builtins.def @@ -709,6 +709,7 @@ DEF_EXT_LIB_BUILTIN (BUILT_IN_STRNCASECMP, "strncasecmp", BT_FN_INT_CONST_STR DEF_LIB_BUILTIN (BUILT_IN_STRNCAT, "strncat", BT_FN_STRING_STRING_CONST_STRING_SIZE, ATTR_RET1_NOTHROW_NONNULL_LEAF) DEF_LIB_BUILTIN (BUILT_IN_STRNCMP, "strncmp", BT_FN_INT_CONST_STRING_CONST_STRING_SIZE, ATTR_PURE_NOTHROW_NONNULL_LEAF) DEF_LIB_BUILTIN (BUILT_IN_STRNCPY, "strncpy", BT_FN_STRING_STRING_CONST_STRING_SIZE, ATTR_RET1_NOTHROW_NONNULL_LEAF) +DEF_EXT_LIB_BUILTIN (BUILT_IN_STRNLEN, "strnlen", BT_FN_SIZE_CONST_STRING_SIZE, ATTR_PURE_NOTHROW_NONNULL_LEAF) DEF_LIB_BUILTIN (BUILT_IN_STRPBRK, "strpbrk", BT_FN_STRING_CONST_STRING_CONST_STRING, ATTR_PURE_NOTHROW_NONNULL_LEAF) DEF_LIB_BUILTIN (BUILT_IN_STRRCHR, "strrchr", BT_FN_STRING_CONST_STRING_INT, ATTR_PURE_NOTHROW_NONNULL_LEAF) DEF_LIB_BUILTIN (BUILT_IN_STRSPN, "strspn", BT_FN_SIZE_CONST_STRING_CONST_STRING, ATTR_PURE_NOTHROW_NONNULL_LEAF) |