On 12/2/2022 5:10 AM, Joseph Myers wrote:
On Fri, 2 Dec 2022, Longjun Luo via Gcc-patches wrote:

They are ./gcc/testsuite/gcc.dg/cpp/warn-redefined.c and
./gcc/testsuite/gcc.dg/cpp/warn-redefined-2.c

These two cases redefine the __TIME__ macro when using the option
'-Wbuiltin-macro-redefined'.

I think I shoud add a test to verify __LINE__ macro in these two cases.

I think it should be a test that doesn't use either
-Wbuiltin-macro-redefined or -Wno-builtin-macro-redefined - a test of how
the compiler behaves by default.

Sorry for the delay. I have added a test case for this default situation. And also update another case to fully test the usage of builtin macros redefintions.
So, the patch itself has no problem. What I need do is to rich its test cases
and update change log, right?

The patch needs review, but I'm fine with the principle that
-Wno-builtin-macro-redefined should apply to __LINE__ as it does to
various other built-in macros.

Thanks for your patience.

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