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| author | ed <ed@FreeBSD.org> | 2011-12-13 17:34:47 +0000 |
|---|---|---|
| committer | ed <ed@FreeBSD.org> | 2011-12-13 17:34:47 +0000 |
| commit | 753612fc80d5cc885147f19d09ab9c64c470d50a (patch) | |
| tree | 6680d81f129f0782fcd1515b1f4af7ce94045db6 /contrib/gcclibs/libcpp/macro.c | |
| parent | a105507a173a0d7935d40c66792b20bdb1f9f77d (diff) | |
| download | FreeBSD-src-753612fc80d5cc885147f19d09ab9c64c470d50a.zip FreeBSD-src-753612fc80d5cc885147f19d09ab9c64c470d50a.tar.gz | |
Add support for __COUNTER__.
__COUNTER__ allows one to obtain incrementing (read: unique) numbers
from the C preprocesor. This is useful when implementing things like a
robust implementation of CTASSERT(), which currently fails when using
it more than once on a single line of code. Probably not likely to cause
any breakage, but still.
__COUNTER__ was also added to GCC 4.3, but since that implementation is
GPLv3 licensed, I took the liberty of implementing it without looking at
any upstream sources. Therefore, this version is licensed under the same
license as the rest of the code; GPLv2.
Diffstat (limited to 'contrib/gcclibs/libcpp/macro.c')
| -rw-r--r-- | contrib/gcclibs/libcpp/macro.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/contrib/gcclibs/libcpp/macro.c b/contrib/gcclibs/libcpp/macro.c index be50c11..1eec578 100644 --- a/contrib/gcclibs/libcpp/macro.c +++ b/contrib/gcclibs/libcpp/macro.c @@ -262,6 +262,10 @@ _cpp_builtin_macro_text (cpp_reader *pfile, cpp_hashnode *node) else result = pfile->time; break; + + case BT_COUNTER: + number = pfile->nextcounter++; + break; } if (result == NULL) |
