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* include cleanups: remove unused headers and add feature test macrosSzabolcs Nagy2013-12-121-0/+1
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* fix out-of-bounds access in UTF-8 decodingRich Felker2013-04-081-1/+1
| | | | | | | | | | | | | | | | | | 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...
* cleanup and work around visibility bug in gcc 3 that affects x86_64Rich Felker2012-02-231-5/+3
| | | | | | | | | | | | | | in gcc 3, the visibility attribute must be placed on both the declaration and on the definition. if it's omitted from the definition, the compiler fails to emit the ".hidden" directive in the assembly, and the linker will either generate textrels (if supported, such as on i386) or refuse to link (on targets where certain types of textrels are forbidden or impossible without further assumptions about memory layout, such as on x86_64). this patch also unifies the decision about when to use visibility into libc.h and makes the visibility in the utf-8 state machine tables based on libc.h rather than a duplicate test.
* cleanup utf-8 multibyte code, use visibility if possibleRich Felker2011-02-271-41/+4
| | | | | | | | | | | | | this code was written independently of musl, with support for a the backwards, nonstandard "31-bit unicode" some libraries/apps might want. unfortunately the extra code (inside #ifdef) makes the source harder to read and makes code that should be simple look complex, so i'm removing it. anyone who wants to use the old code can find it in the history or from elsewhere. also, change the visibility of the __fsmu8 state machine table to hidden, if supported. this should improve performance slightly in shared-library builds.
* cleanup multibyte stuff to remove ugly casts, sanitize the ptr align castsRich Felker2011-02-131-4/+4
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* initial check-in, version 0.5.0 v0.5.0Rich Felker2011-02-121-0/+61