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@ -1,6 +1,97 @@
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c.lib 1.217 (10.7.2025)
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- The raise() function no longer directly calls abort() because that
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function in turn would have invoked raise(SIGABRT), triggering an
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infinite loop. Instead, raise() now invokes the __abort() function
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which abort() would have called via raise(SIGABRT).
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- fgets() no longer leverages the __getc() macro, which in the
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original implementation added excessive overhead for even small
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read operations. Instead, fgets() now focuses on copying data
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stored in the FILE read buffer, transferring the buffered data
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in bulk, if possible. The same kind of changes are present in
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the gets() function.
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- fputs() and puts() no longer leverage the __putc() macro. As with
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the fgets() implementation, the focus is now on enabling bulk
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data transfer, eliminating the __putc() macro overhead.
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- fread() and fwrite() no longer leverage the __getc() and
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__putc() macros. Their focus is on enabling bulk data transfer
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instead.
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- The setvbuf() function now correctly sets the buffer size to the
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value of BUFSIZ if a buffer size of 0 is specified. Previously,
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setvbuf() would have disabled buffering for the FILE instead.
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Failure to allocate a buffer of the specified non-zero size is
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now caught and results in the setvbuf() function to indicate
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failure, setting the errno variable to ENOBUFS.
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- The alloca() library function (which is a built-in function for
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gcc, for example) now calls abort() rather than returning NULL.
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- Changed the numeric overflow check which the calloc() function
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uses to be simpler.
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- The memory management debugging code in stdlib_free.c is no longer
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reusing the allocation size value to indicate that an allocation
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should never be freed. This indication is now stored in a separate
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flags field.
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- The memory debugging code in malloc() now checks if the combined
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size of the management data structures and front/back padding
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stay within the bounds of a 32 bit integer.
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The list of memory nodes to be freed is now initialized first.
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Previously, the list would be left uninitialized if the attempt to
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allocate memory for memory arbitration semaphore had failed.
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- The realloc() function now obtains the original size of the
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allocation from a dedicated field of the data structure which
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precedes the allocation, whose purpose is to track the
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allocation until it is freed. Previously, obtaining the relevant
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allocation size information was encapsulated by a "clever"
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macro.
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With memory debugging enabled, the stored allocation size no
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longer says how much memory, padding included, is being used.
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Instead, the requested allocation size is stored unchanged, with
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the total allocation size derived from this number. The idea is
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to make it harder to mistake the original allocation size for
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the padded one and vice versa.
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- The use of the optional slab allocator now has to be deliberately
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enabled in the "stdlib_memory.h" header file.
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- The minimum size of an allocation managed by the optional slab
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allocator is now 16 bytes instead of 8.
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- The minimum size of a slab is now 4096 bytes.
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- The optional slab allocator now checks for integer overflows when
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processing allocation requests, taking into account the size of
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the actual allocating, including padding. The task of figuring
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out how much padding is needed now rests in function which
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calculates the total overhead.
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amiga.lib 1.216 (10.7.2025)
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- Added a 'C' implementation of the pools.lib functions which were
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merged with the Kickstart/Workbench 3.0 era amiga.lib. This
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implementation provides the LibDeletePool(), LibCreatePool(),
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LibAllocPooled() and LibFreePooled() functions which had not
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been available before in clib2.
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Please note that these functions are largely obsolete and only
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helpful for code which must run on Kickstart 2.04. The current
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implementation performs no error checking for integer overflows,
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just like the original pools.lib implementation.
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c.lib 1.216 (xxx)
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- Add some wchar and multbyte-string related functions to allow gcc
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- Add some wchar and multibyte-string related functions to allow gcc
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building a libstdc++ library with wide char support. For now, the
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functions are mostly stub ones only. They can be implemented on
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demand.
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Olaf Barthel