From d3fe767c16e7c528e4fc71c8a68ac14b4573d880 Mon Sep 17 00:00:00 2001 From: Jonathan Wakely Date: Wed, 9 Nov 2022 21:49:52 +0000 Subject: c-family: Support #pragma region/endregion [PR85487] These pragmas are used by some editors to mark regions of code for grouping and folding. GCC should silently ignore them, rather than giving -Wunknown-pragmas warnings. PR c/85487 gcc/ChangeLog: * doc/cpp/pragmas.rst (Pragmas): Document region pragmas. gcc/c-family/ChangeLog: * c-pragma.cc (handle_pragma_ignore): New function. (init_pragma): Register region and endregion pragmas. gcc/testsuite/ChangeLog: * c-c++-common/pragma-region.c: New test. --- gcc/c-family/c-pragma.cc | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'gcc/c-family') diff --git a/gcc/c-family/c-pragma.cc b/gcc/c-family/c-pragma.cc index b5a4b3c..142a464 100644 --- a/gcc/c-family/c-pragma.cc +++ b/gcc/c-family/c-pragma.cc @@ -1403,6 +1403,12 @@ handle_pragma_message (cpp_reader *) TREE_STRING_POINTER (message)); } +/* Ignore a no-op pragma that GCC recognizes, but which has no effect. */ +static void +handle_pragma_ignore (cpp_reader *) +{ +} + /* Mark whether the current location is valid for a STDC pragma. */ static bool valid_location_for_stdc_pragma; @@ -1870,6 +1876,9 @@ init_pragma (void) c_register_pragma ("GCC", "pop_options", handle_pragma_pop_options); c_register_pragma ("GCC", "reset_options", handle_pragma_reset_options); + c_register_pragma (0, "region", handle_pragma_ignore); + c_register_pragma (0, "endregion", handle_pragma_ignore); + c_register_pragma ("STDC", "FLOAT_CONST_DECIMAL64", handle_pragma_float_const_decimal64); -- cgit v1.1