#if _FP_W_TYPE_SIZE < 64
#error "Only stud muffins allowed, schmuck."
#endif
-- linux/arch/sparc64/quad.c
#fortune

+#if defined(__alpha__) && defined(CONFIG_PCI)
+ /*
+ * The meaning of life, the universe, and everything. Plus
+ * this makes the year come out right.
+ */
+ year -= 42;
+#endif
-- From the patch for 1.3.2: (kernel/time.c), submitted by Marcus Meissner

#linux - VBoxNetFlt does not build on #Fedora 38 - Super User
https://superuser.com/questions/1806205/vboxnetflt-does-not-build-on-fedora-38

edit /usr/share/virtualbox/src/vboxhost/vboxnetflt/linux/VBoxNetFlt-linux.c and change
#if RTLNX_VER_MIN(6,5,0) # include <net/gso.h> #endif

to 5,4,0

#if _FP_W_TYPE_SIZE < 32
#error "Here's a nickel kid. Go buy yourself a real computer."
#endif
-- linux/arch/sparc64/double.h
#fortune

@nytpu how about sth like this once in some header

#ifdef _WINDLL
#define DLLEXPORT __declspec(dllexport)
#else
#define DLLEXPORT
#endif

And then you just

DLLEXPORT
int
eventHandler(...)

#ifdef __cplusplus
#error "pls no cplusplus i want fast compiles ;_;"
#endif

@lain_7 @rifkin @jef Basically same here:

────
#if 0
ctime -begin ${0%.*}.ctm
clang -g -fsanitize=address -std=c99 $0 -o ${0%.*}
ctime -end ${0%.*}.ctm
exit
#endif
────

That's the intro to all my new .c files. (ctime, by the way, times the build.) I got the idea from Won Chun, and like to think of it grandly as "The Won Build System".

@rifkin @jef

I used to start quickie C programs with:

----------------------------
#ifdef notdef
gcc $0 -o $(basename $0 .c)
exit $?
#endif

int main....

---------------------------

Then I could compile by saying "sh foo.c"

This was especially useful if the compile line was complicated (e.g., the C program required linking with special libraries or something).

(Actually I used back-quotes instead of $(....), but this phone doesn't have back-quote on this keyboard.)

@marcoarment I mean you can work around at least one of those.

#ifndef let
#define let __auto_type const
#endif

#ifndef var
#define var __auto_type
#endif

#if _FP_W_TYPE_SIZE < 32
#error "Here's a nickel kid. Go buy yourself a real computer."
#endif
-- linux/arch/sparc64/double.h

#humor #unix #usr #games #fortune

sys/dev/fdt: fdt_boot.c

skrll: G/C some #if 0 / #endif code

http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/dev/fdt/fdt_boot.c.diff?r1=1.3&r2=1.4

#if A || B || C || D || E
something
#else
something_else
#endif

where A, B, C, D, and E are diverse system types, should perhaps make you think "maybe something_else is the portable option and the something that works on $mylaptop is the odd one out"

but no. 🤦

https://codesearch.debian.net/search?q=printf.*%5B%25%5DL%5Bud%5D+-package%3Agcc+-package%3Allvm*+path%3A.*%5C.c%24&literal=0&page=19

Cファイル内にシェルスクリプトを書くことによりビルドスクリプトとソースコードを1つのファイルにまとめるという荒業
```c
#if 0
set -e
OUTPUT="$(mktemp)"
gcc "${0}" -o "${OUTPUT}"
set +e
"${OUTPUT}" "${@}"
RET="${?}"
rm "${OUTPUT}"
exit "${RET}"
#endif

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char* argv[]) {
printf("Hello, world!\n");
for (int i = 1; i < argc; i++)
printf("argv[%d]: %s\n", i, argv[i]);
return EXIT_SUCCESS;
}
```

sys/arch/evbarm/nslu2: nslu2_machdep.c

rin: Missing #endif for the previous...

http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/arch/evbarm/nslu2/nslu2_machdep.c.diff?r1=1.38&r2=1.39

#ifdef CONFIG_MACH_SUN50I_H616
#define SUNXI_DRAM_COM_BASE 0x047FA000
#define SUNXI_DRAM_CTL0_BASE 0x047FB000
#define SUNXI_DRAM_PHY0_BASE 0x04800000
#endif

In Xcode 15, Inactive code in #if…#endif blocks is now dimmed 👇🏻

I rebuild Mesa with assertions enabled and rerun the unit test... and it passes. Huh?

I rebuild without assertions, assuming I made some kind of mistake. Unit test fails again.

I confirm that the allocations are properly aligned when Mesa is built with assertions and unaligned when built without assertions. So I'm not going crazy, but WTF?

Then I spot this in the definition of the `gc_block_header` struct (which `gc_alloc_size` allocates):

> #ifndef NDEBUG
> unsigned canary;
> #endif

Oh.

@selfisekai I'd recommend
```
#ifdef _WIN32
#error "Won't fix!"
#endif
```

Compiling sqlite3.c (amalgamated version of sqlite) with cake
I got interesting warnings

static void charFunc(
...
*zOut++ = 0x80 + (u8)(c & 0x3F);
} \
}
sqlite3_result_text64(context, (char*)z, zOut-z, sqlite3_free, SQLITE_UTF8);
}

#if defined(SQLITE_WIN32_HAS_ANSI)
WINBASEAPI HANDLE WINAPI CreateFileMappingA(HANDLE, LPSECURITY_ATTRIBUTES, \
DWORD, DWORD, DWORD, LPCSTR);
#endif /* defined(SQLITE_WIN32_HAS_ANSI) */

2023-05-18: CHANGES IN R 4.3.0 patched C-LEVEL FACILITIES

*

The C prototypes for LAPACK calls ‘dspgv’ and ‘dtptrs’ in ‘R_exts/Lapack.h’ had one too many and one too few character length arguments - but this has not caused any known issues. To get the corrected prototypes, include

#include // for PR18534fixed #ifdef PR18534fixed # define usePR18534fix 1 #endif #include

in your C/C++ code (PR#18534). https://developer.r-project.org/blosxom.cgi/R-devel/NEWS/2023/05/18?utm_source=dlvr.it&utm_medium=mastodon#n2023-05-18