From 44af976a44bc194b985fdb880f99a7feff133b5a Mon Sep 17 00:00:00 2001 From: Bruce Mitchener Date: Thu, 7 Nov 2013 15:49:37 +0700 Subject: Update libcxx to 194185, 2013-11-07. This brings C++14 support. --- system/lib/libcxx/support/win32/support.cpp | 69 ++++++++++++++--------------- 1 file changed, 33 insertions(+), 36 deletions(-) (limited to 'system/lib/libcxx/support/win32/support.cpp') diff --git a/system/lib/libcxx/support/win32/support.cpp b/system/lib/libcxx/support/win32/support.cpp index 4215a700..6ee31e0c 100644 --- a/system/lib/libcxx/support/win32/support.cpp +++ b/system/lib/libcxx/support/win32/support.cpp @@ -14,14 +14,7 @@ #include // vsprintf, vsnprintf #include // strcpy, wcsncpy #include // mbstate_t -#include // unique_ptr -namespace { // Private - - struct free_deleter { - inline void operator()(char* p) { free(p); } - }; -} // Some of these functions aren't standard or if they conform, the name does not. int asprintf(char **sptr, const char *__restrict format, ...) @@ -29,44 +22,44 @@ int asprintf(char **sptr, const char *__restrict format, ...) va_list ap; va_start(ap, format); int result; -#ifndef _LIBCPP_NO_EXCEPTIONS - try { -#endif - result = vasprintf(sptr, format, ap); -#ifndef _LIBCPP_NO_EXCEPTIONS - } catch( ... ) { - va_end(ap); - throw; - } -#endif + result = vasprintf(sptr, format, ap); va_end(ap); return result; } -// Like sprintf, but when return value >= 0 it returns a pointer to a malloc'd string in *sptr. +// Like sprintf, but when return value >= 0 it returns +// a pointer to a malloc'd string in *sptr. // If return >= 0, use free to delete *sptr. int vasprintf( char **sptr, const char *__restrict format, va_list ap ) { *sptr = NULL; - int count = _vsnprintf( NULL, 0, format, ap ); // Query the buffer size required. - if( count >= 0 ) { - std::unique_ptr p( static_cast(malloc(count+1)) ); - if ( ! p ) - return -1; - if ( vsnprintf( p.get(), count+1, format, ap ) == count ) // We should have used exactly what was required. - *sptr = p.release(); - else // Otherwise something is wrong, likely a bug in vsnprintf. If so free the memory and report the error. - return -1; // Pointer will get automaticlaly deleted. + // Query the count required. + int count = _vsnprintf( NULL, 0, format, ap ); + if (count < 0) + return count; + size_t buffer_size = static_cast(count) + 1; + char* p = static_cast(malloc(buffer_size)); + if ( ! p ) + return -1; + // If we haven't used exactly what was required, something is wrong. + // Maybe bug in vsnprintf. Report the error and return. + if (_vsnprintf(p, buffer_size, format, ap) != count) { + free(p); + return -1; } - + // All good. This is returning memory to the caller not freeing it. + *sptr = p; return count; } -// Returns >= 0: the number of wide characters found in the multi byte sequence src (of src_size_bytes), -// that fit in the buffer dst (of max_dest_chars elements size). The count returned excludes the null terminator. -// When dst is NULL, no characters are copied and no "out" parameters are updated. +// Returns >= 0: the number of wide characters found in the +// multi byte sequence src (of src_size_bytes), that fit in the buffer dst +// (of max_dest_chars elements size). The count returned excludes the +// null terminator. When dst is NULL, no characters are copied +// and no "out" parameters are updated. // Returns (size_t) -1: an incomplete sequence encountered. -// Leaves *src pointing the next character to convert or NULL if a null character was converted from *src. +// Leaves *src pointing the next character to convert or NULL +// if a null character was converted from *src. size_t mbsnrtowcs( wchar_t *__restrict dst, const char **__restrict src, size_t src_size_bytes, size_t max_dest_chars, mbstate_t *__restrict ps ) { @@ -112,10 +105,13 @@ size_t mbsnrtowcs( wchar_t *__restrict dst, const char **__restrict src, } // Converts max_source_chars from the wide character buffer pointer to by *src, -// into the multi byte character sequence buffer stored at dst which must be dst_size_bytes bytes in size. -// Returns >= 0: the number of bytes in the sequence sequence converted frome *src, excluding the null terminator. +// into the multi byte character sequence buffer stored at dst which must be +// dst_size_bytes bytes in size. +// Returns >= 0: the number of bytes in the sequence sequence +// converted frome *src, excluding the null terminator. // Returns size_t(-1) if an error occurs, also sets errno. -// If dst is NULL dst_size_bytes is ignored and no bytes are copied to dst and no "out" parameters are updated. +// If dst is NULL dst_size_bytes is ignored and no bytes are copied to dst +// and no "out" parameters are updated. size_t wcsnrtombs( char *__restrict dst, const wchar_t **__restrict src, size_t max_source_chars, size_t dst_size_bytes, mbstate_t *__restrict ps ) { @@ -138,7 +134,8 @@ size_t wcsnrtombs( char *__restrict dst, const wchar_t **__restrict src, result = wcrtomb_s( &char_size, dst + dest_converted, dest_remaining, c, ps); else result = wcrtomb_s( &char_size, NULL, 0, c, ps); - // If result is zero there is no error and char_size contains the size of the multi-byte-sequence converted. + // If result is zero there is no error and char_size contains the + // size of the multi-byte-sequence converted. // Otherwise result indicates an errno type error. if ( result == no_error ) { if ( c == L'\0' ) { -- cgit v1.2.3-18-g5258