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| author | Alexander Viro <viro@parcelfarce.linux.theplanet.co.uk> | 2004-06-14 16:09:02 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-07 21:02:07 -0700 |
| commit | 669244d22464b8e3af138f4df9e1f914f6feeffb (patch) | |
| tree | e528bf56220f274d8fc5e16b274764812b32f114 /validation | |
| parent | 87ce1691126e447c34d16abc1624d6ca0e079a4a (diff) | |
| download | sparse-dev-669244d22464b8e3af138f4df9e1f914f6feeffb.tar.gz | |
[PATCH] lazy-copy macro expansion in pre-processing
This is almost a total rewrite of the macro expansion. It now does
lazy-copy or the arguments, with the realization that if an argument
only shows up once in the macro expansion (quite common), we don't need
to allocate a new copy of the argument token stream, we can just insert
it as-is.
I hope it's reasonably clean and readable; review would be obviously welcome.
Diffstat (limited to 'validation')
| -rw-r--r-- | validation/preprocessor12.c | 7 | ||||
| -rw-r--r-- | validation/preprocessor13.c | 7 | ||||
| -rw-r--r-- | validation/preprocessor14.c | 7 | ||||
| -rw-r--r-- | validation/preprocessor15.c | 7 |
4 files changed, 28 insertions, 0 deletions
diff --git a/validation/preprocessor12.c b/validation/preprocessor12.c new file mode 100644 index 00000000..385c1a7d --- /dev/null +++ b/validation/preprocessor12.c @@ -0,0 +1,7 @@ +/* + * GNU kludge + */ +#define A(x,...) x,##__VA_ARGS__ +A(1) +A(1,2) +A(1,2,3) diff --git a/validation/preprocessor13.c b/validation/preprocessor13.c new file mode 100644 index 00000000..96c813ee --- /dev/null +++ b/validation/preprocessor13.c @@ -0,0 +1,7 @@ +/* + * GNU kludge, corner case + */ +#define A(x,...) x##,##__VA_ARGS__ +A(1) +A(1,2) +A(1,2,3) diff --git a/validation/preprocessor14.c b/validation/preprocessor14.c new file mode 100644 index 00000000..001f1f2d --- /dev/null +++ b/validation/preprocessor14.c @@ -0,0 +1,7 @@ +/* + * GNU kludge, another corner case + */ +#define A(x,y,...) ,##x##__VA_ARGS__ +A(,1) +#define B(x,y,...) x##,##__VA_ARGS__ +B(,1) diff --git a/validation/preprocessor15.c b/validation/preprocessor15.c new file mode 100644 index 00000000..0a2dfd7f --- /dev/null +++ b/validation/preprocessor15.c @@ -0,0 +1,7 @@ +#define A defi +#define B ned +#define C(x,y) x##y +#define D(x,y) C(x,y) +#if D(A,B) B +D(1,2) +#endif |