Alex Riesen raalkml
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| // the smiley program demonstrated by Russ Cox at http://research.swtch.com/acme | |
| // it shows that the plan9 compiler http://plan9.bell-labs.com/sys/doc/comp.html fully supports UTF-8 | |
| // i tried to compile it with a recent version of the plan9 compiler running on vmware but it failed. | |
| // it seems that older versions of the compiler supported sizeof(void) == 0 | |
| // anyway you get the idea | |
| #include <u.h> | |
| #include <libc.h> |
raalkml
/ insane_kernel_macro_solution.c
Created
April 12, 2012 09:48
— forked from hank/insane_kernel_macro_solution.c
The solution to Linus' question on resolving undefined macros in the preprocessor to 0, as well as resolving defined macros to their values.
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| #include <stdio.h> | |
| #define CONFIG_FOO 1 | |
| #define CONFIG_NOO 0 | |
| #define is_set(macro) is_set_(macro) | |
| #define macrotest_1 , | |
| #define is_set_(value) is_set__(macrotest_##value) | |
| #define is_set__(comma) is_set___(comma 1, 0) | |
| #define is_set___(_, v, ...) v |