Overview of changes from 0.6.1 to 0.7.1 == * New features - All particular language features and behaviors have become configurable via --enable and --disable options of the configure script, with automated feature dependencies resolution and conflict detection - The Cutter-based C testing framework has been replaced with the new framework developed by Jun Inoue. Simply type 'make check' to run the tests. All of old contents of test-c/ have been removed, and test-c2/ has been renamed to test-c/. Be careful to read old logs. - "internal definitions" and "strict toplevel definitions validation" features have been configurable - Add optional duplicate variable check to 'let', 'let*', 'letrec' and 'do' (it is not required by R5RS) - [R6RS] R6RS (R5.91RS) compatible 'fixnum-width' procedure - SSCM_VERSION_REQUIRE() macro - Add pkg-config support * Specification changes - [R5RS] Remove 'delay' and 'force' (temporarily) since they completely violates R5RS definitions - [R5RS] Proper tail recursion conformance of 'eval' has been marked as 'uncertain' - [SRFI-23] Display error message and optional objects as same as the reference implementation of SRFI-23 - [SRFI-34] Add 'current handler' to error object to behave as same as the reference implementation of SRFI-34 'raise' - [SRFI-77, R6RS] The SRFI-77 procedures 'least-fixnum' and 'greatest-fixnum' have been upgraded to R6RS (R5.91RS) (nothing is actually changed) - The API for function call with GC-ready stack has been changed to resolve corrupted GC problem on SPARC and IA-64. It needs API change - Definition of dotted list length is changed to SRFI-1's from SigScheme-speciific one. SCM_LISTLEN_DOTTED(), SCM_DOTTED_LISTP() and other dotted list-related macros and functions have been changed so - Remove initial hyphen support for symbols (such as '-sym). Use (string->symbol "-sym") instead - Remove SIOD-compatible external representation of eof value '(eof)' - (scm_set_lib_path): Change to holding copied library path string - (scm_return_value): Removed - Change the low-level port API to fix the design error about error handling (get_byte() and peek_byte() were not able to detect read error) - Withdraw sigscheme-stdint.h. Use scmint.h instead - The --enable-configuration=CONF option of the configure is renamed to --enable-conf=CONF - The --enable-multibyte=ENCODING option of the configure is replaced with --enable-default-encoding=ENCODING, and --enable-ENCODING options are also added * Fixes [R5RS] and [SRFI-n] tags indicate specification conformance fixes. - [CRITICAL] Fix crashes by broken va_list passing of format.c on x86_64 platform - [CRITICAL] Fix corrupted GC on some architectures such as SPARC and IA-64 with libgcroots - [CRITICAL] Fix crashes by corrupted GC mark on stack on specific platforms that have (alignof(ScmObj) < sizeof(ScmObj)), such as m68k - [CRITICAL] Fix potential SEGV on long string parsing - [CRITICAL] Fix possible crash on parsing R5RS-reserved chars |[]{} - [CRITICAL] Fix broken GC on systems that have 8-byte aligned malloc(3) such as Cygwin - [CRITICAL] Fix broken 64-bit data model capability of storage-compact - [CRITICAL] Fix broken ScmBaseCharPort inheritance of ScmSingleByteCharPort which may cause SEGV - [R5RS] Fix invalid acceptance of definition form on where neither toplevel nor internal definition is allowed - [R5RS] Fix invalid acceptance of 'begin' that contains definitions and expressions intermixed - [R5RS] Fix invalid acceptance of that contains definitions and expressions intermixed on 'let', 'let*', 'letrec' and function form 'define' - [R5RS] Fix syntactic keyword to value evaluation that only bound to syntax or macro (i.e. (eq? if and) has been invalidated). But binding syntactic keywords to first-class objects such as (define else 3) and (define do 4) are still allowed - [R5RS] Fix first-class binding objects acceptance of let-syntax, letrec-syntax and define-syntax - [R5RS] Fix invalid no-expressions acceptance of 'let', 'let*', 'letrec' and function form 'define' - [R5RS] Fix invalid acceptance of binding syntactic keyword as value on 'define', 'let', 'let*', 'letrec' and 'do' - [R5RS] Fix broken per-iteration env isolation of 'do' - [R5RS] Fix proper tail recursion incapability of '=>' form of 'cond' - [R5RS] Fix invalid acceptance of cond-like '=>' form of 'case' which is not defined in R5RS - [R5RS] Fix broken result of 'modulo' on no-remainder cases - [R5RS] Fix improper list acceptance on single-arg map - [R5RS] Fix improper tail recursion of call-with-values on a corner case - [R5RS] Fix broken improper tail handling of 'list-ref' - [R5RS] Fix improper list acceptance of 'reverse' - [R5RS] Reject invalid number strings such as "0xa" and " 1" on 'string->number' - [R5RS] Reject invalid number literals such as "#x0xa" - [SRFI-38] Fix inacceptance of optional 'optarg' argument of 'write-with-shared-structure' - [SRFI-48] Fix optional port argument inacceptance of 'pretty-print' - [SRFI-48] Fix broken number prefix acceptance such as "~,f", "~1,f", "~,1f" - [SRFI-60] Fix invalid result of (logand). Now it returns -1 as same as the reference implementation - [MAJOR] Add lacking or incomplete error handlings for port operations - [MAJOR] Fix incomplete singlebyte charater support - [MAJOR] Fix broken sign extention for 8-bit char on string port read - [MAJOR] Fix broken out of range error detection of string->number which fails every conversion once after the error has occurred - [MAJOR] Fix possible crash on parsing script prelude longer than 64 chars - [MAJOR] Fix possible crash on parsing script prelude that only has "#! /usr/bin/env" - [MAJOR] Fix a broken error handling on character encoding switching when !SCM_USE_MULTIBYTE_CHAR - [MAJOR] Fix infinite loop on raising error objects that contain circular list when SCM_USE_HYGIENIC_MACRO - [MAJOR] Fix compile error on environments that lacks stdint.h -compatible definitions - [MAJOR] Fix missized-cast of 'quotient' which results a broken value on 64-bit configurations - [MAJOR] Fix broken evaluation of quasiquoted vectors splicing with improper list - [MAJOR] Fix 64-bit capability of quasiquoted vectors - [MAJOR] Fix passing circular list into error object when SRFI-38 is not enabled - Fix '0' prefix incapability on a maximum-length binary number literal. See "R5RS conformance: Numbers: Literals" subsection of doc/spec.txt for further details - Fix possible crash of the broken GC protection on initialization - Fix a broken type handling appeares on (equal? macro1 macro2) on storage-compact - Fix broken procedure invocation appears on a minor build configuration - Fix broken body result of %%closure-code when body-length == 1 - Fix possible datum index overflow of SRFI-38 write/ss on 64-bit platforms - Fix acceptable pathname length of a script name of sscm command previously one char lesser than maximum - Fix broken aggregated global variables handling - Fix writable static data feature dependency - Fix broken max heap size configuration - Fix crashes on 'make check' in test-c2/ on x86_64-unknown-linux-gnu - Fix unwanted test-c2/*-coll.c removal on --disable-maintainer-mode * Others - The maintainer of the software has been succeeded by YAMAMOTO Kengo a.k.a YamaKen Overview of changes from 0.5.0 (r3097 + private modifications) to 0.6.1 == * New features - Support R5RS hygienic macros - Support format strings (covers SRFI-28 and SRFI-48) - Add global symbol exportation control method in portable way (see doc/global-obj.txt) - Add experimental support for embedded platforms that lack writable static data, such as BREW or Symbian OS (see doc/global-obj.txt) * Fixes - Make installed libsscm and header files workable Overview of changes from 0.5.0-alpha (r2902 + private modifications) to 0.5.0 == * New features - Support 64-bit data models (storage-compact is not yet) - Add lacking character predicates and complete all R5RS character procedures - Add lacking string predicates and complete all R5RS string procedures - Support constant list (storage-compact does not) - Support constant vector (storage-compact is not yet) - Add quote-less vector literal check * Fixes - Make behavior of internal definitions strictly conforming to R5RS - Make C99-dependent stdint.h unneeded