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2012-09-06use restrict everywhere it's required by c99 and/or posix 2008Rich Felker10-11/+12
to deal with the fact that the public headers may be used with pre-c99 compilers, __restrict is used in place of restrict, and defined appropriately for any supported compiler. we also avoid the form [restrict] since older versions of gcc rejected it due to a bug in the original c99 standard, and instead use the form *restrict.
2012-05-26fix failure of mbsinit(0) (not UB; required to return nonzero)Rich Felker1-1/+1
issue reported by Richard Pennington; slightly simpler fix applied
2012-05-02fix longstanding exit logic bugs in mbsnrtowcs and wcsnrtombsRich Felker2-4/+9
these are POSIX 2008 (previously GNU extension) functions that are rarely used. apparently they had never been tested before, since the end-of-string logic was completely missing. mbsnrtowcs is used by modern versions of bash for its glob implementation, and and this bug was causing tab completion to hang in an infinite loop.
2012-02-24new attempt at working around the gcc 3 visibility bugRich Felker1-0/+4
since gcc is failing to generate the necessary ".hidden" directive in the output asm, generate it explicitly with an __asm__ statement...
2012-02-24remove useless attribute visibility from definitionsRich Felker1-1/+1
this was a failed attempt at working around the gcc 3 visibility bug affecting x86_64. subsequent patch will address it with an ugly but working hack.
2012-02-23cleanup and work around visibility bug in gcc 3 that affects x86_64Rich Felker2-6/+4
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.
2011-03-25fix all implicit conversion between signed/unsigned pointersRich Felker1-1/+1
sadly the C language does not specify any such implicit conversion, so this is not a matter of just fixing warnings (as gcc treats it) but actual errors. i would like to revisit a number of these changes and possibly revise the types used to reduce the number of casts required.
2011-02-27cleanup utf-8 multibyte code, use visibility if possibleRich Felker3-84/+5
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.
2011-02-21remove sample utf-8 code that's not part of the standard libraryRich Felker1-47/+0
2011-02-13cleanup multibyte stuff to remove ugly casts, sanitize the ptr align castsRich Felker3-27/+27
2011-02-12initial check-in, version 0.5.0v0.5.0Rich Felker18-0/+694