diff options
| author | Martin Sebor <msebor@redhat.com> | 2019-10-28 22:46:28 +0000 |
|---|---|---|
| committer | Martin Sebor <msebor@gcc.gnu.org> | 2019-10-28 16:46:28 -0600 |
| commit | ad1539d5555a161cf6851de8995641d6dfe792d9 (patch) | |
| tree | e56e9d15ba5ff4476a38e5269c6163b5dc6a36e9 /libcpp/init.c | |
| parent | 48b2123f6336ba6c06846d7c8b60bd14eaeae7ec (diff) | |
PR c/66970 - Add __has_builtin() macro
gcc/ChangeLog:
PR c/66970
* doc/cpp.texi (__has_builtin): Document.
* doc/extend.texi (__builtin_frob_return_addr): Correct spelling.
gcc/c/ChangeLog:
PR c/66970
* c-decl.c (names_builtin_p): Define a new function.
gcc/c-family/ChangeLog:
PR c/66970
* c-common.c (c_common_nodes_and_builtins): Call c_define_builtins
even when only preprocessing.
* c-common.h (names_builtin_p): Declare new function.
* c-lex.c (init_c_lex): Set has_builtin.
(c_common_has_builtin): Define a new function.
* c-ppoutput.c (init_pp_output): Set has_builtin.
gcc/cp/ChangeLog:
PR c/66970
* cp-objcp-common.c (names_builtin_p): Define new function.
gcc/testsuite/ChangeLog:
PR c/66970
* c-c++-common/cpp/has-builtin-2.c: New test.
* c-c++-common/cpp/has-builtin-3.c: New test.
* c-c++-common/cpp/has-builtin.c: New test.
From-SVN: r277544
Diffstat (limited to 'libcpp/init.c')
| -rw-r--r-- | libcpp/init.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/libcpp/init.c b/libcpp/init.c index 4bcec7be3e5..b0943174f02 100644 --- a/libcpp/init.c +++ b/libcpp/init.c @@ -403,6 +403,7 @@ static const struct builtin_macro builtin_array[] = B("__COUNTER__", BT_COUNTER, true), B("__has_attribute", BT_HAS_ATTRIBUTE, true), B("__has_cpp_attribute", BT_HAS_ATTRIBUTE, true), + B("__has_builtin", BT_HAS_BUILTIN, true), /* Keep builtins not used for -traditional-cpp at the end, and update init_builtins() if any more are added. */ B("_Pragma", BT_PRAGMA, true), @@ -483,7 +484,8 @@ cpp_init_special_builtins (cpp_reader *pfile) for (b = builtin_array; b < builtin_array + n; b++) { - if (b->value == BT_HAS_ATTRIBUTE + if ((b->value == BT_HAS_ATTRIBUTE + || b->value == BT_HAS_BUILTIN) && (CPP_OPTION (pfile, lang) == CLK_ASM || pfile->cb.has_attribute == NULL)) continue; |