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Features:
- C99 variable length arrays (Thomas Preud'homme & Joe Soroka)
- Asm labels for variables and functions (Thomas Preud'homme)
- STT_GNU_IFUNC (Indirect functions as externals) (Thomas Preud'homme)
- More tests (tests2) (Milutin Jovanovic)

version 0.9.25:

- first support for x86-64 target (Shinichiro Hamaji)
- support µClibc
- split tcc.c into tcc.h libtcc.c tccpp.c tccgen.c tcc.c
- improved preprocess output with linenumbers and spaces preserved
- tcc_relocate now copies code into user buffer
- fix bitfields with non-int types and in unions
- improve ARM cross-compiling (Daniel Glöckner)
- link stabstr sections from multiple objects
- better (still limited) support for multiple TCCStates

version 0.9.24:

- added verbosity levels -v, -vv, -vvv
- Accept standard input as an inputstream (Hanzac Chen)
- Support c89 compilers other than gcc (Hanzac Chen)
- -soname linker option (Marc Andre Tanner)
- Just warn about unknown directives, ignore quotes in #error/#warning
- Define __STDC_VERSION__=199901L (477)
- Switch to newer tccpe.c (includes support for resources)
- Handle backslashes within #include/#error/#warning
- Import changesets (part 4) 428,457,460,467: defines for openbsd etc.
- Use _WIN32 for a windows hosted tcc and define it for the PE target,
  otherwise define __unix / __linux (Detlef Riekenberg)
- Import changesets (part 3) 409,410: ARM EABI by Daniel Glöckner
- Some in-between fixes:
  TCC -E no longer hangs with macro calls involving newlines.
  (next_nomacro1 now advances the read-pointer with TOK_LINEFEED)
  Global cast (int g_i = 1LL;) no longer crashes tcc.
  (nocode_wanted is initially 1, and only 0 for gen_function)
  On win32 now tcc.exe finds 'include' & 'lib' even if itself is in 'bin'.
  (new function w32_tcc_lib_path removes 'bin' if detected)
  Added quick build batch file for mingw (win32/build-tcc.bat)
  Last added case label optimization (455) produced wrong code. Reverted.

- Import more changesets from Rob Landley's fork (part 2):
  487: Handle long long constants in gen_opic() (Rob Landley)
  484: Handle parentheses within __attribute__((...)) (Rob Landley)
  480: Remove a goto in decl_initializer_alloc (Rob Landley)
  475: Fix dereferences in inline assembly output (Joshua Phillips)
  474: Cast ptrs to ints of different sizes correctly (Joshua Phillips)
  473: Fix size of structs with empty array member (Joshua Phillips)
  470: No warning for && and || with mixed pointers/integers (Rob Landley)
  469: Fix symbol visibility problems in the linker (Vincent Pit)
  468: Allow && and || involving pointer arguments (Rob Landley)
  455: Optimize case labels with no code in between (Zdenek Pavlas)
  450: Implement alloca for x86 (grischka)
  415: Parse unicode escape sequences (Axel Liljencrantz)
  407: Add a simple va_copy() in stdarg.h (Hasso Tepper)
  400: Allow typedef names as symbols (Dave Dodge)

- Import some changesets from Rob Landley's fork (part 1):
  462: Use LGPL with bcheck.c and il-gen.c
  458: Fix global compound literals (in unary: case '&':) (Andrew Johnson)
  456: Use return code from tcc_output_file in main() (Michael Somos)
  442: Fix indirections with function pointers (***fn)() (grischka)
  441: Fix LL left shift in libtcc1.c:__shldi3 (grischka)
  440: Pass structures and function ptrs through ?: (grischka)
  439: Keep rvalue in bit assignment (bit2 = bit1 = x) (grischka)
  438: Degrade nonportable pointer assignment to warning (grischka)
  437: Call 'saveregs()' before jumping with logical and/or/not (grischka)
  435: Put local static variables into global memory (grischka)
  432/434: Cast double and ptr to bool (grischka)
  420: Zero pad x87 tenbyte long doubles (Felix Nawothnig)
  417: Make 'sizeof' unsigned (Rob Landley)
  397: Fix save_reg for longlongs (Daniel Glöckner)
  396: Fix "invalid relocation entry" problem on ubuntu - (Bernhard Fischer)

- ignore AS_NEEDED ld command
- mark executable sections as executable when running in memory
- added support for win32 wchar_t (Filip Navara)
- segment override prefix support (Filip Navara)
- normalized slashes in paths (Filip Navara)
- windows style fastcall (Filip Navara)
- support for empty input register section in asm (Filip Navara)
- anonymous union/struct support (Filip Navara)
- fixed parsing of function parameters
- workaround for function pointers in conditional expressions (Dave Dodge)
- initial '-E' option support to use the C preprocessor alone
- discard type qualifiers when comparing function parameters (Dave Dodge)
- Bug fix: A long long value used as a test expression ignores the
  upper 32 bits at runtime (Dave Dodge)
- fixed multiple concatenation of PPNUM tokens (initial patch by Dave Dodge)
- fixed multiple typedef specifiers handling
- fixed sign extension in some type conversions (Dave Dodge)

version 0.9.23:

- initial PE executable format for windows version (grischka)
- '#pragma pack' support (grischka)
- '#include_next' support (Bernhard Fischer)
- ignore '-pipe' option
- added -f[no-]leading-underscore
- preprocessor function macro parsing fix (grischka)

version 0.9.22:

- simple memory optimisations: kernel compilation is 30% faster
- linker symbol definitions fixes
- gcc 3.4 fixes
- fixed value stack full error
- 'packed' attribute support for variables and structure fields
- ignore 'const' and 'volatile' in function prototypes
- allow '_Bool' in bit fields

version 0.9.21:

- ARM target support (Daniel Glöckner)
- added '-funsigned-char, '-fsigned-char' and
  '-Wimplicit-function-declaration'
- fixed assignment of const struct in struct
- line comment fix (reported by Bertram Felgenhauer)
- initial TMS320C67xx target support (TK)
- win32 configure
- regparm() attribute
- many built-in assembler fixes
- added '.org', '.fill' and '.previous' assembler directives
- '-fno-common' option
- '-Ttext' linker option
- section alignment fixes
- bit fields fixes
- do not generate code for unused inline functions
- '-oformat' linker option. 
- added 'binary' output format.

version 0.9.20:

- added '-w' option
- added '.gnu.linkonce' ELF sections support
- fixed libc linking when running in memory (avoid 'stat' function
  errors).
- extended '-run' option to be able to give several arguments to a C
  script.

version 0.9.19:

- "alacarte" linking (Dave Long)
- simpler function call
- more strict type checks
- added 'const' and 'volatile' support and associated warnings
- added -Werror, -Wunsupported, -Wwrite-strings, -Wall.
- added __builtin_types_compatible_p() and __builtin_constant_p()
- chars support in assembler (Dave Long)
- .string, .globl, .section, .text, .data and .bss asm directive
  support (Dave Long)
- man page generated from tcc-doc.texi
- fixed macro argument substitution
- fixed zero argument macro parsing
- changed license to LGPL
- added -rdynamic option support

version 0.9.18:

- header fix (time.h)
- fixed inline asm without operand case
- fixed 'default:' or 'case x:' with '}' after (incorrect C construct accepted
  by gcc)
- added 'A' inline asm constraint.

version 0.9.17:

- PLT generation fix
- tcc doc fixes (Peter Lund)
- struct parse fix (signaled by Pedro A. Aranda Gutierrez)
- better _Bool lvalue support (signaled by Alex Measday)
- function parameters must be converted to pointers (signaled by Neil Brown)
- sanitized string and character constant parsing
- fixed comment parse (signaled by Damian M Gryski)
- fixed macro function bug (signaled by Philippe Ribet)
- added configure (initial patch by Mitchell N Charity)
- added '-run' and '-v' options (initial patch by vlindos)
- added real date report in __DATE__ and __TIME__ macros

version 0.9.16:

- added assembler language support
- added GCC inline asm() support
- fixed multiple variable definitions : uninitialized variables are
  created as COMMON symbols.
- optimized macro processing
- added GCC statement expressions support
- added GCC local labels support
- fixed array declaration in old style function parameters
- support casts in static structure initializations
- added various __xxx[__] keywords for GCC compatibility
- ignore __extension__ GCC in an expression or in a type (still not perfect)
- added '? :' GCC extension support

version 0.9.15:

- compilation fixes for glibc 2.2, gcc 2.95.3 and gcc 3.2.
- FreeBSD compile fixes. Makefile patches still missing (Carl Drougge).
- fixed file type guessing if '.' is in the path.
- fixed tcc_compile_string()
- add a dummy page in ELF files to fix RX/RW accesses (pageexec at
  freemail dot hu).

version 0.9.14:

- added #warning. error message if invalid preprocessing directive.
- added CType structure to ease typing (faster parse).
- suppressed secondary hash tables (faster parse).
- rewrote parser by optimizing common cases (faster parse).
- fixed signed long long comparisons.