https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85487
Jonathan Wakely <redi at gcc dot gnu.org> changed:
What |Removed |Added
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Keywords| |easyhack
--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
The docs raise some questions.
They say that a #pragma region must be ended by a #pragma endregion. Should the
compiler check that and issue a diagnostic otherwise?
What is the form of the optional "name" that follows #pragma region?
What if #pragma endregion is followed by preprocessor tokens, not just a
comment?
If we don't care about validating anything, it's easy to make GCC completely
ignore those pragmas:
--- a/gcc/c-family/c-pragma.cc
+++ b/gcc/c-family/c-pragma.cc
@@ -1218,6 +1218,15 @@ handle_pragma_message (cpp_reader *ARG_UNUSED(dummy))
TREE_STRING_POINTER (message));
}
+/* Ignore a no-op pragma that GCC recognizes, but which has no effect. */
+static void
+handle_pragma_ignore (cpp_reader *)
+{
+ tree x;
+ while (pragma_lex (&x) != CPP_EOF)
+ /* Ignore the rest of the line. */;
+}
+
/* Mark whether the current location is valid for a STDC pragma. */
static bool valid_location_for_stdc_pragma;
@@ -1633,6 +1642,9 @@ 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);
This needs tests though.
