- 14 4月, 2013 1 次提交
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由 Rich Felker 提交于
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- 11 4月, 2013 1 次提交
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由 Rich Felker 提交于
the getifaddrs interface seems to have been invented by glibc, and they expose socket.h, so for us not to do so is just gratuitous incompatibility with the interface we're mimicing.
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- 09 4月, 2013 5 次提交
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由 rofl0r 提交于
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由 Rich Felker 提交于
the standard is clear that the old behavior is conforming: "In this case, [EILSEQ] shall be stored in errno and the conversion state is undefined." however, the specification of mbrtowc has one peculiarity when the source argument is a null pointer: in this case, it's required to behave as mbrtowc(NULL, "", 1, ps). no motivation is provided for this requirement, but the natural one that comes to mind is that the intent is to reset the mbstate_t object. for stateful encodings, such behavior is actually specified: "If the corresponding wide character is the null wide character, the resulting state described shall be the initial conversion state." but in the case of UTF-8 where the mbstate_t object contains a partially-decoded character rather than a shift state, a subsequent '\0' byte indicates that the previous partial character is incomplete and thus an illegal sequence. naturally, applications using their own mbstate_t object should clear it themselves after an error, but the standard presently provides no way to clear the builtin mbstate_t object used when the ps argument is a null pointer. I suspect this issue may be addressed in the future by specifying that a null source argument resets the state, as this seems to have been the intent all along. for what it's worth, this change also slightly reduces code size.
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由 Rich Felker 提交于
the interface contract for mbtowc admits a much faster implementation than mbrtowc can achieve; wrapping mbrtowc with an extra call frame only made the situation worse. since the regex implementation uses mbtowc already, this change should improve regex performance too. it may be possible to improve performance in other places internally by switching from mbrtowc to mbtowc.
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由 Rich Felker 提交于
this simple change, in my measurements, makes about a 7% performance improvement. at first glance this change would seem like a compiler-specific hack, since the modified code is not even used. however, I suspect the reason is that I'm eliminating a second path into the main body of the code, allowing the compiler more flexibility to optimize the normal (hot) path into the main body. so even if it weren't for the measurable (and quite notable) difference in performance, I think the change makes sense.
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由 Rich Felker 提交于
SA and SB are used as the lowest and highest valid starter bytes, but the value of SB was one-past the last valid starter. this caused access past the end of the state table when the illegal byte '\xf5' was encountered in a starter position. the error did not show up in full-character decoding tests, since the bogus state read from just past the table was unlikely to admit any continuation bytes as valid, but would have shown up had we tested feeding '\xf5' to the byte-at-a-time decoding in mbrtowc: it would cause the funtion to wrongly return -2 rather than -1. I may eventually go back and remove all references to SA and SB, replacing them with the values; this would make the code more transparent, I think. the original motivation for using macros was to allow misguided users of the code to redefine them for the purpose of enlarging the set of accepted sequences past the end of Unicode...
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- 08 4月, 2013 1 次提交
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由 Rich Felker 提交于
also include fallback code for broken kernels that don't support the flags. as usual, the fallback has a race condition that can leak file descriptors.
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- 07 4月, 2013 3 次提交
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由 Rich Felker 提交于
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由 Rich Felker 提交于
this is a bit ugly, and the motivation for supporting it is questionable. however the main factors were: 1. it will be useful to have this for certain internal purposes anyway -- things like syslog. 2. applications can just save argv[0] in main, but it's hard to fix non-portable library code that's depending on being able to get the invocation name without the main application's help.
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由 Rich Felker 提交于
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- 06 4月, 2013 9 次提交
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由 Isaac Dunham 提交于
GNU used several extensions that were incompatible with C99 and POSIX, so they used alternate names for the standard functions. The result is that we need these to run standards-conformant programs that were linked with glibc.
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由 Rich Felker 提交于
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由 rofl0r 提交于
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由 rofl0r 提交于
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由 rofl0r 提交于
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由 rofl0r 提交于
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由 rofl0r 提交于
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由 rofl0r 提交于
supports ipv4 and ipv6, but not the "extended" usage where usage statistics and other info are assigned to ifa_data members of duplicate entries with AF_PACKET family.
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由 rofl0r 提交于
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- 05 4月, 2013 12 次提交
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由 Rich Felker 提交于
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由 Rich Felker 提交于
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由 rofl0r 提交于
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由 Rich Felker 提交于
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由 Rich Felker 提交于
the preprocessor can reliably determine the signedness of wchar_t. L'\0' is used for 0 in the expressions so that, if the underlying type of wchar_t is long rather than int, the promoted type of the expression will match the type of wchar_t.
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由 Rich Felker 提交于
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由 Rich Felker 提交于
since shadow does not yet support enumeration (getspent), the corresponding FILE-based get and put versions are also subbed out for now. this is partly out of laziness and partly because it's not clear how they should work in the presence of TCB shadow files. the stubs should make it possible to compile some software that expects them to exist, but such software still may not work properly.
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由 Rich Felker 提交于
remove redundant headers and comments; this file is completely trivial now. also, avoid temp var.
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由 Rich Felker 提交于
remove unneeded headers. this file is utterly trivial now and there's no sense in having a comment to state that it's in the public domain.
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由 Rich Felker 提交于
there is no need to zero-fill an mbstate_t object in the caller; mbsrtowcs will automatically treat a null pointer as the initial state.
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由 Rich Felker 提交于
negative values of wchar_t need to be treated in the non-ASCII case so that they can properly generate EILSEQ rather than getting truncated to 8bit values and stored in the output.
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由 Rich Felker 提交于
these changes fix at least two bugs: - misaligned access to the input as uint32_t for vectorized ASCII test - incorrect src pointer after stopping on EILSEQ in addition, the text of the standard makes it unclear whether the mbstate_t object is to be modified when the destination pointer is null; previously it was cleared either way; now, it's only cleared when the destination is non-null. this change may need revisiting, but it should not affect most applications, since calling mbsrtowcs with non-zero state can only happen when the head of the string was already processed with mbrtowc. finally, these changes shave about 20% size off the function and seem to improve performance by 1-5%.
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- 02 4月, 2013 8 次提交
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由 rofl0r 提交于
the contents of this header are already in arpa/nameser.h
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由 rofl0r 提交于
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由 rofl0r 提交于
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由 Szabolcs Nagy 提交于
and remove syscall todos from microblaze
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由 Szabolcs Nagy 提交于
SO_REUSEPORT implementation was merged in the linux kernel commit c617f398edd4db2b8567a28e899a88f8f574798d 2013-01-23
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由 Szabolcs Nagy 提交于
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由 Szabolcs Nagy 提交于