Messages in this thread Patch in this message | | | Date | Thu, 24 Apr 2008 11:03:25 -0400 | From | Mathieu Desnoyers <> | Subject | [patch 01/37] Stringify support commas |
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#define MYDEF a, b, c
__stringify(MYDEF) should be replaced by "a, b, c", but compilation fails because the __stringify macro expects only one argument. Fix it by using variable macro arguments in __stringify and __stringify_1.
Needed in my current NMI safe iret paravirt support work so I can expand a macro containing assembly code into a string.
Since some architectures still use -traditional, which does not support macros with variable arguments, keep the old stringify around. Test with __STDC__ to see if -traditional is used.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> CC: akpm@osdl.org CC: Sam Ravnborg <sam@ravnborg.org> --- include/linux/stringify.h | 5 +++++ 1 file changed, 5 insertions(+)
Index: linux-2.6-lttng/include/linux/stringify.h =================================================================== --- linux-2.6-lttng.orig/include/linux/stringify.h 2008-04-22 14:16:21.000000000 -0400 +++ linux-2.6-lttng/include/linux/stringify.h 2008-04-22 14:19:26.000000000 -0400 @@ -6,7 +6,12 @@ * converts to "bar". */ +#ifdef __STDC__ +#define __stringify_1(x...) #x +#define __stringify(x...) __stringify_1(x) +#else /* Support gcc -traditional, without commas. */ #define __stringify_1(x) #x #define __stringify(x) __stringify_1(x) +#endif #endif /* !__LINUX_STRINGIFY_H */ -- Mathieu Desnoyers Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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