Import Upstream version 5c3upstream/5c3

1 files changed, 902 insertions, 3 deletions

diff --git a/ChangeLog b/ChangeLog
index 6f847a3..e9e3e19 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,9 +1,908 @@
+Fri Sep 11 17:25:14 EDT 1998  Aubrey Jaffer  <jaffer@scm.colorage.net>
+
+	* patchlvl.h (SCMVERSION): Bumped from 5c2 to 5c3.
+
+1998-09-11  Radey Shouman  <Radey_Shouman@splashtech.com>
+
+	* gmalloc.c: Imported gmalloc.c from emacs 20.2.1.
+	
+	(check_block): (check_frag_blocks): Debugging functions added.
+
+	* sys.c (scm_protect_temp): Added, is currently, and probably will
+	remain, a noop to force allocation of a SCM temporary on the
+	stack.
+
+	* scl.c (big2str): Added call to scm_protect_temp.
+
+	* eval.c (map): (for_each): Added calls to scm_protect_temp.
+	
+	* rgx.c (lregcomp): Added call to scm_protect_temp.
+
+1998-09-04    Radey Shouman <radey@colorage.com>
+
+	* scl.c (big2str): Take address of SCM temporary as gc protection.
+
+1998-09-02  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* dynl.c (l_dyn_link):
+	conditionalized message on verbose.  Cleaned up message.
+
+	* Link.scm (link:link):
+	prepend ./ to non-absolute sun-dl library paths.
+
+	* scm.texi, scm.doc, scm.1, r4rstest.scm, README, Init5c2.scm, ANNOUNCE:
+	...-swiss => swissnet
+
+	* scm.h (verbose): read only macro for scm_verbose.
+
+	* repl.c (scm_verbose): renamed from verbose.
+
+1998-08-31  Radey Shouman  <Radey_Shouman@splashtech.com>
+
+	* scmfig.h (VERIFY_INTS): Added macro to print warnings if
+	interrupts are improperly allowed and CAREFUL_INTS is #defined.
+	
+	(VOLATILE):  Expands to `volatile' keyword if __STDC__ is #defined.
+
+	* sys.c (sys_errp): Interrupt safe system output port added.
+	(scm_estk_reset): (must_malloc): (must_realloc): (scm_make_cont):
+	Now should be run with ints deferred, no longer ever allow ints.
+	scm-estk_reset builds a new stack if scm_estk is BOOL_F.
+
+	* scm.c (process_signals): Modified to print deferred output to
+	sys_errp.
+
+	* eval.c (SCM_ENV_SAVE): (SCM_ENV_RESTORE): now ENV_SAVE,
+	ENV_RESTORE, local to eval.c
+	(apply): (ceval_1): Ints deferred before call to scm_make_cont,
+	which no longer allows ints.
+	(closure): Now takes the number of required closure arguments as a
+	second argument.
+	(m_lambda): Computes and memoizes the number of required arguments.
+	
+	* repl.c (iprlist): Uses GCCDR so that fatal error messages during
+	gc may print better.
+	(handle_it): Call to scm_egc made conditional on NO_ENV_CACHE.
+	(growth_mon): (gc_start): (gc_end): (heap_report): Now use
+	sys_errp.
+	(ints_warn): Added for interrupt warnings using VERIFY_INTS.
+	(scm_stack_trace): Now completely prints stacks up to 20 deep,
+	rather than 10.
+	(def_err_response): Prints errobj if error is fatal.
+	(lroom): Made subr_1o for easier calling from C.
+
+1998-08-27  Radey Shouman  <radey@colorage.com>
+
+	* Init5c2.scm (array-shape): No longer signals an error when
+	passed a non-array -- now returns whatever ARRAY-DIMENSIONS
+	returned (currently #f).
+	
+1998-08-26  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* scm.c (scm_proftimer): Also conditional on SIGALRM.
+
+1998-08-25  Radey Shouman  <radey@colorage.com>
+
+	* sys.c (init_storage): Fixed initialization of tmp_errp so that
+	it is always correctly aligned.
+
+	* scm.c (process_signals): Fixed braino in code to search for
+	deferred signals.
+	(scmable_signal): Added POSIX signal unblocking call, conditional
+	on SIG_UNBLOCK, so Scheme signal handlers may be interrupted
+	before they exit.
+
+1998-08-24  Radey Shouman  <radey@colorage.com>
+
+	* scm.c (scmable_signal): (err_signal): (init_signals):
+	(ignore_signals):
+	(unignore_signals): (restore_signals): Abstracted signal handling.
+
+	(fpe_signal): (bus_signal): (segv_signal): (alrm_signal):
+	(prof_signal): Removed.
+
+	* repl.c (process_signals): Moved to scm.c
+
+	* sys.c (must_realloc_cell): Now returns void.
+
+1998-08-20  Radey Shouman  <radey@colorage.com>
+
+	* scm.c (prof_signal): (scm_proftimer): (ignore_signals):
+	(unignore_signals): Added handler for SIGPROF, raised via call to
+	setitimer (Scheme function PROFILE-TIMER).
+
+	* repl.c (handle_it): No longer saves scm_env, scm_env_tmp to
+	estk, they are protected by doing ecache gc.
+	(process_signals): Handles SIGPROF.
+
+	* sys.c (scm_fill_freelist): No longer always does gc.
+	(gc_mark): No longer bashes cdr of `free' cells, handle_it now
+	bashes more selectively.
+	(scm_egc): DEFER/ALLOW_INTS moved to minimize debugging ints_viol
+	messages -- some will still occur.
+	(scm_egc): No longer saves scm_env and scm_env_ptr to estk, they
+	are protected separately.  To improve interrupt safety.
+
+1998-08-19  Radey Shouman  <radey@colorage.com>
+
+	* unif.c (resizuve): eliminated unused variable `ptr'.
+
+	* sys.c (freeprint): Now prints cdr of new cell.
+
+1998-08-18  Radey Shouman  <radey@colorage.com>
+
+	* repl.c (input_waiting): Now checks return value of select and
+	restarts if interrupted.  This was causing CHAR-READY? to return
+	#T when no input was actually readable.
+
+1998-08-17  Radey Shouman  <radey@colorage.com>
+
+	* sys.c (scm_egc): (scm_egc_copy_roots): Eliminated extra root
+	argument, made safe because EGC_ROOT is always called with ints
+	deferred.
+
+	(gc_mark): Check for ecache broken heart during mark -- fatal error.
+
+	(gc_sweep): Now uses HUGE_LENGTH instead of LENGTH for string
+	termination check.
+
+	(must_malloc_cell): (must_realloc_cell): Added.
+
+	(gc_for_alloc):  Static function abstracts gc calls for malloc/realloc.
+
+	* unif.c (make_uve): Removed call to makestr in order to support
+	huge strings.
+	(resizuve):  Now uses must_realloc_cell.
+
+	* subr.c (make_vector): (mkbig): (adjbig): Now use
+	must_malloc_cell, must_realloc_cell.
+
+	* socket.c (maksknm): Now uses must_malloc_cell.
+
+	* scm.h (ISYMNUM): Use only 8 bits for number, freeing some bits
+	for other uses.
+
+	* scl.c (makdbl): Now uses must_malloc_cell.
+
+	* rgx.c (lrgecomp): Now uses must_malloc_cell.
+
+	* repl.c (handle_it): Keep pointers to discarded new cells.
+
+	* record.c (rec_constr1): (init_record): Now use must_malloc_cell.
+
+	* posix.c (scm_getgroups): Now uses must_malloc_cell.
+
+	* dynl.c (l_dyn_link): (l_dyn_call): Moved NEWCELL out of deferred
+	ints sections.  For dlopen versions, print more error messages.
+
+1998-08-17  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* eval.c (macroexp1): now prints name of unbound variable.
+	(s_unbnd s_wtap): abstracted error message strings.
+
+1998-08-11  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ceval_1): No longer make extra environment frame for
+	LETREC, since internal DEFINE is now rewritten.
+
+1998-08-10  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* sys.c (scm_fill_freelist): added.  Assures that at least
+	MIN_GC_YIELD cells are in freelis.  This is used before returning
+	from interrupts.
+
+	* repl.c (handle_it): Discard 2 cells (because of CDR in NEWCELL).
+	Call scm_fill_freelist();
+
+1998-08-08  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* Init5c2.scm: removed DEFINED? conditionals for old SCMs.
+
+1998-07-28  Radey Shouman  <radey@colorage.com>
+
+	* sys.c (scm_estk_grow): Now pushes estk ptr, with ints deferred.
+
+	* eval.c (ENV_PUSH): (ENV_POP): Now done with DEFER_INTS_EGC to
+	prevent problems with interrupt handlers that run Scheme code.
+
+1998-07-27  Radey Shouman  <radey@colorage.com>
+
+	* sys.c (scm_estk_grow): Protected critical section with
+	DEFER/ALLOW_INTS
+
+	(must_malloc): (must_realloc): Protected igc call with
+	DEFER/ALLOW_INTS.
+
+	(scm_egc): Added DEFER/ALLOW_INTS around call to igc -- prevents
+	interrupts violation message in debug mode.
+
+	(igc): Now SCM_ENV_SAVE before any gc marking to fix gc bug
+	tickled by running Scheme code from interrupts.
+
+	(scm_egc): (scm_egc_copy_roots): Now take a single argument, a gc
+	root.  Simplifies handling of the case where scm_egc calls igc,
+	and possibly itself.
+
+	* repl.c (growth_mon): Now prints "shrank" instead of "grew" if
+	the relevant limit decreased.
+	(handle_it): Do env cache gc before applying interrupt
+	handler, to protect data on the estk, which might move.
+
+Wed Jul 22 16:36:48 EDT 1998  Aubrey Jaffer  <jaffer@scm.colorage.net>
+
+	* patchlvl.h (SCMVERSION): Bumped from 5c1 to 5c2.
+
+1998-07-22  Radey Shouman  <radey@colorage.com>
+
+	* sys.c: Added include of unistd.h for linux.
+	(freeprint): Distinguishes between free cells (on freelist)
+	and new cells.
+	(scm_egc): Check for scm_estk, scm_estk_ptr not consistent.
+
+	*repl.c (ints_viol): Added sense argument again, since there are
+	several meaningful values for ints_disabled.
+	(handle_it): More careful about interrupts when saving estk.  *
+
+	*scmfig.h (DEFER_INTS): (ALLOW_INTS): (DEFER_INTS_EGC):
+	(ALLOW_INTS_EGC): ints_viol calls changed.
+
+	* ramap.c (array_for_each): (array_map): Always act as if CCLO is
+	defined, this does no harm, and allows CCLO optimizations for the
+	dynamicly loaded case.
+
+	* posix.c: Added include of unistd.h for linux.
+
+	* eval.c (ident2sym): Now available in Scheme as
+	IDENTIFIER->SYMBOL.
+	(closure): Removed env argument, now uses scm_env and is more careful
+	about interrupts.
+	(env2tree):  Now uses DEFER_INTS_EGC.
+
+1998-07-22  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* build.scm (read-version): added to read version number from
+	"patchlvl.h".
+	(batch:rebuild-catalog): rebuilds the catalog in implvic (executable's
+	implementation vicinity).
+	(build-params): implinit renamed to implvic.
+	(make-dll-archive): deposits dll-archives in implvic.
+
+	* scm.c (INIT_FILE_NAME): definitions moved to "patchlvl.h".
+
+	* patchlvl.h (INIT_FILE_NAME): moved from "scm.c" so it will be
+	updated automatically.
+
+	* Init.scm: renamed Init5c1.scm.  The init file-name will
+	henceforth include the version number.
+
+	* Makefile (new): Added support for Init file renaming (including
+	CVS).
+
+1998-07-17  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ceval_1): Changed IM_SET to make High C happy.
+
+	* scmfig.h: ioext.c: Added STDC_HEADERS #define and #include
+	<unistd.h> for linux. Allows use of the rename() system call,
+	which works for some filesystems that do not allow multiple links
+	(smbfs).
+
+1998-07-16  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* repl.c (repl): changed __TURBOC__ flag to __MSDOS__.  This
+	enables the cr/lf fix for DJGPP also.
+	(repl): Enabled cr/lf fix for __HIGHC__ also.
+
+1998-07-16  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (lookupcar): Second argument now specifies what to check:
+	LOOKUP_UNDEFP for error on undefined, LOOKUP_MACROP for error on
+	keyword.  LOOKUP_UNDEFP and LOOKUP_MACROP are #defined only in
+	eval.c.  Error is again signalled for undefined symbols at top
+	level.
+
+1998-07-14  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ENV_PUSH): (ENV_POP): Modified for interrupt safety.
+
+	(ceval_1): (apply): (procedurep): (macroexp1): (make_specfun):
+	cclo is now a subtype of tc7_specfun, which also includes
+	tc16_apply and tc16_call_cc, smobs are now never procedures.
+
+	(apply): Added call/cc support, error checking for subr_2o and
+	subr_3 types.
+
+	* sys.c (gc_mark): (gc_sweep): Modified for new specfun, cclo
+	representation.
+
+	(gc): Now does ecache gc if given optional argument.
+
+	* repl.c (iprin1): Modified for new specfun, cclo representation.
+
+	(handle_it):  Now saves and restores estk for interrupt safety.
+
+	* ramap.c (array_map): Changed for new cclo representation.
+
+1998-07-10  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (macroexp1): Made sure to call unmemocar before
+	throwing error.
+	(ceval_1): ALLOW_INTS_EGC before returning value.
+
+1998-07-09  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ceval_1): Modifications to allow rewriting of interal
+	DEFINE to LETREC: If an ISYM is evaluated in non-tail position the
+	body of which it is the CAR is macro expanded by m_expand_body,
+	which rewrites internal DEFINE.
+
+	(m_expand_body): Added.
+
+	(m_macroexp1): Added argument to control error checking:
+	m_expand_body may speculatively expand forms in the wrong
+	environments.  Made argument number checks conditional on
+	RECKLESS.
+
+	(m_body): Added, error checks bodies and inserts the ISYM tokens.
+
+	(m_lambda): (m_letstar): (m_letrec1): (m_letrec): (m_let): Now
+	call m_body.
+
+	(m_cond): (m_case): (m_quote): Modified to avoid destructively changing
+	their argument forms.  Since m_expand_body speculatively macro
+	expands forms the process must be reversible.
+
+	(m_ident_eqp): Fixed to use proper environment.
+
+	(renamed_ident): Added DEFER_INTS_EGC.
+
+	Added prototypes for static functions.
+
+1998-07-07  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (SPECFUN): Removed -- now the only case.
+	(ceval_1): (m_cont): IM_CONT case removed.
+	(scm_evalatomcar): Added check for tc16_specfun. Made unquoted vector
+	message conditional on RECKLESS.
+
+	* scm.h:
+	* repl.c: IM_CONT removed.
+
+	* sys.c (gc_sweep): Fixed bug in float gc introduced with NUM_HP.
+	(freeprint): Added for debugging.
+
+1998-07-06  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ceval_1): envpp now -1 after estk has been popped,
+	allows better stack tracing.
+
+	* eval.c (ceval_1): Fixed argument number check for closures and
+	made conditional on CAUTIOUS.
+
+	(ceval_1): (evalatomcar): (lookupcar): Moved check for
+	using macro as variable from ceval_1 and evalatomcar to lookupcar.
+
+1998-07-02  Radey Shouman  <radey@colorage.com>
+
+	* Init.scm (call-with-current-continuation): Now subr.
+
+	* eval.c (ceval_1): Made CALL-WITH-CURRENT-CONTINUATION an inlined
+	smob, like APPLY.  Flushed @CALL-WITH-CURRENT-CONTINUATION.
+
+	ecache allocated lists now no longer passed to apply of asubrs and
+	rpsubrs -- this is not interrupt safe.
+
+	(macroexp1):  Added argument number checks for subrs, this gives error
+	messages with unmemoized code.
+
+	* eval.c (ceval_1): Fixed error reporting -- "wrong number of
+	args" was sometimes reported as "wrong type to apply".
+
+	Now pass arglist allocated in ecache for asubrs and rpsubrs with
+	3+ args.
+
+1998-07-01  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ceval): (ceval_1): (ilookup): (lookupcar): (farlookup):
+	New model of interrupt control for protecting ecache references
+	using DEFER_INTS_EGC, ALLOW_INTS_EGC.  These need not be strictly
+	nested, ints are always allowed by ceval_1 before tail-calling a
+	subr.
+	(ceval_1): @apply flushed in favor of a smob denoting apply and
+	understood by the evaluator -- allows ecache allocation of
+	argument lists.
+	(scm_macroexp1): Now checks arity for closures, checking had been
+	broken for non-CAUTIOUS SCM.
+
+	* scmfig.h (DEFER_INTS_EGC): (ALLOW_INTS_EGC): Defined.
+
+	* sys.c (scm_env_cons): (scm_env_cons): (scm_env_cons2):
+	(scm_extend_env): DEFER_INTS replaced with DEFER_INTS_EGC.
+
+	* repl.c (repl_report): At verbose level 3 now reports number of
+	ecache cells migrated and why, also number of ecache garbage
+	collections.
+	(ints_viol): Reports filename and line number of violation, and
+	filename and number of last previous DEFER/ALLOW_INTS.
+
+
+1998-06-23  Radey Shouman  <radey@colorage.com>
+
+	* scm.c (int_signal): Now signals error if there is no Scheme
+	handler.
+	(ignore_signals): Changed SIG_IGN to SIG_DFL for SIGINT.
+
+1998-06-22  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ENV_PUSH): Fixed problem introduced during last change:
+   	estk was overstepping its bounds.
+
+1998-06-19  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ilookup): (farlookup): (unmemocar): (ceval_1):
+	(id_denote): Wrapped all pointer-chasing of possible ecache cells
+	in DEFER/ALLOW_INTS for safety when interrupt handlers may
+	evaluate Scheme code asynchronously.
+
+	(scm_macroexp1): (m_define): (m_atlet_syntax): Environments now
+	always wrapped when passed to macro expanders.
+
+	(ecache_p): (debug_env_car): (debug_env_cdr): Added for CAREFUL_INTS
+	checking.
+
+	(test_ints): Added when CAREFUL_INTS is defined for checking interrupt
+	safety.
+
+	* repl.c (ints_viol): Now prints file and line number.
+
+1998-06-15  Radey Shouman  <radey@colorage.com>
+
+	* scm.h (SCM_ENV_SAVE): (SCM_ENV_RESTORE): Added, to prevent
+	oversights in sys.c.
+
+	* sys.c (scm_env_cons): (scm_env_cons2): Made interrupt safe;
+	return results in global scm_env_tmp, use DEFER/ALLOW_INTS.
+	(scm_extend_env): (scm_env_cons_tmp): Added.
+	(scm_env_acons): Deleted, superseded by scm_extend_env.
+
+	*eval.c (ceval_1): (apply): Replaced and rewrote scm_env_ routines
+	to use new interrupt safe versions.  ENV_TMP replaced by
+	scm_env_tmp, it was hard to remember that ENV_TMP might move.
+	CLEAR_ENV_TMP removed since scm_env_tmp will be overwritten almost
+	every time estk is pushed.
+
+1998-06-15  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* build.scm (compile-c-files *unknown*): Now uses
+	BATCH:APPLY-CHOP-TO-FIT BATCH:TRY-SYSTEM rather than BATCH-SYSTEM.
+
+1998-06-12  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* eval.c (evalatomcar): #ifdef MACRO added around M_IDENTP.
+
+	* Makefile (dist): Added cvs flag command to dist target.
+
+1998-06-12  Radey Shouman  <radey@colorage.com>
+
+	* repl.c (scm_execpath): Added ASSERTion to signal error in case
+	malloc fails.
+
+	* subr.c (scm_copybitfield): corrected unsigned declaration of len
+	variable, will now signal errors if END < START.
+	(bigcomp): Changed type of xlen from sizet to long, since
+	it is compared with -1.
+
+1998-06-07  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* Init.scm (string-ci->symbol): added (new in "slib/strcase.scm")
+
+Fri Jun 5 16:01:02 EDT 1998  Aubrey Jaffer  <jaffer@scm.colorage.net>
+
+	* patchlvl.h (SCMVERSION): Bumped from 5c0 to 5c1.
+
+1998-06-05  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* ANNOUNCE: Removed ftp.cs.indiana.edu:/pub/scheme-repository/
+	entries because they are no longer being maintained or updated.
+
+1998-06-03  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* Makefile (Install): target updated to include more recent *.scm
+	as well as *.sl and *.so files.
+
+	* continue.h (setjump): Using (include <signal.h> and) SIG_UNBLOCK
+	for setjump #defines.
+
+	* scm.c (ignore_signals): SIG_UNBLOCK is a better indicator for
+	sigprocmask() than __USE_POSIX.
+
+1998-06-03  Radey Shouman  <radey@colorage.com>
+
+	* unif.c (array_inbp): Deleted unused label badarg:
+
+1998-06-02  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* repl.c: SIGHUP_deferred added.
+
+1998-06-02  Radey Shouman  <radey@colorage.com>
+
+	* scm.c (ignore_signals): now unblocks signals (mask).
+
+	* ioext.c (i_execv): Now brackets execv[p] with un/ignore_signals().
+
+1998-06-01  Radey Shouman  <radey@colorage.com>
+
+	* scm.c (unblock_signals): Deleted.  Signal mask problem fixed by
+	of #defining setjump as sigsetjmp, longjump as siglongjmp.
+
+1998-05-30  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* build.scm (batch:rebuild-catalog): rewritten from
+	rebuild-catalog.
+	(default-for-platform): new batch-dialect added.
+	(guess-how): removed.  Guessing delayed using
+	default-for-platform.
+
+1998-05-28  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ceval_1): setjmp changed to setjump.
+
+	* continue.h:
+	Changed setjump, longjump to use sigsetjmp, siglongjmp if it
+	looks as though we're POSIX
+
+1998-05-28  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* repl.c (handle_it): absorbed wta() call always used with it.
+	(SIGALRM_deferred): renamed from alrm_deferred.
+	(SIGINT_deferred): renamed from sig_deferred.
+	(han_sig han_alarm): collapsed into (new) process_signals().
+
+	* scm.c (alrm_signal int_signal): now call handle_it() directly,
+	instead of through han_sig() and han_alarm().
+
+	* scmfig.h (CHECK_INTS): simplified; deferred_proc when non-zero
+	is address of procedure to call for signal processing (always
+	process_signals()).
+
+	* sys.c (sysintern mksubr): "const" added to declaration of first
+	arguments.
+
+1998-05-27  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* repl.c (everr): fixed really broken default vs. dowinds stuff.
+
+	* socket.c (l_accept): moved DEFER_INTS so accept() call won't
+	block.
+
+1998-05-27  Radey Shouman  <radey@colorage.com>
+
+	* repl.c: Fixed bug in scm_stack_trace: could have a negative
+	number of stack frames if interrupted at top level.
+
+1998-05-26  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* scmfig.h: Metaware __HIGHC__ lacks sbrk (LACK_SBRK).
+
+1998-05-21  Radey Shouman  <radey@colorage.com>
+
+	* sys.c (must_realloc): Fixed sense of check on realloc return
+	value in must_realloc.
+
+	* repl.c (scm_ecache_report): Fixed ecache stack report in ROOM.
+
+1998-05-21  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* sys.c, scm.h, repl.c: Fixed long vs. int bugs for 16-bit compilers.
+
+	* Init.scm: Made renamed logical operations safe for old executables.
+
+	* scmfig.h: Borland sbrk() is a noop.
+
+	* sys.c: Fixed ECACHEP for Borland C.
+
+	* Init.scm: Removed check for duplicate key values for CASEV (now
+	done by CASE).
+
+	* Init.scm (casev): Removed check for duplicate key values for
+	CASEV (now done by CASE).
+
+1998-05-21  radey  <radey@scm.colorage.net>
+
+	* scm.texi: Documented changes to closure format.
+
+	* sys.c: cosmetic changes.
+
+Wed May 20 17:53:52 EDT 1998  Aubrey Jaffer  <jaffer@aubrey.jaffer>
+
+	* patchlvl.h (SCMVERSION): Bumped from 5b5 to 5c0.
+
+1998-05-20  Radey Shouman  <radey@colorage.com>
+
+	* eval.c: Added check for duplicate key values for CASE.
+
+	* sys.c (scm_egc): Modified scm_egc to prevent a major gc from
+	happening inside an ecache gc -- which was causing environment lossage.
+
+1998-05-20  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* Makefile: made check or checklit part of normal build.
+
+	* scm.texi (Evaluation): Added description of FARLOC.
+	(Memory Management for Environments): Added Tom Lord's
+	documentation of ecache.
+
+	* build.scm (build): compile-c-files linux: don't use -O2 when -g
+	is specified.
+
+1998-05-14  Radey Shouman  <radey@colorage.com>
+
+	* Init.scm (bit-extract): (logical:bit-field):
+ 	(logical:bitwise-if): (logical:copy-bit):
+	(logical:copy-bit-field): definitions added for SLIB compatibility.
+
+	* subr.c (scm_bitfield): renamed BIT-EXTRACT to BIT-FIELD,
+	added range check on END.
+	(scm_bitif): (scm_copybitfield): (scm_copybit): added.
+
+1998-05-12  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* eval.c (m_case): Added checks for ELSE clause.
+
+	* Init.scm (defconst): added.
+	(casev): added.
+	(print-args): fixed (environment-cache broke).
+
+	* eval.c (env2tree): exported to Scheme as environment->tree.
+
+1998-05-11  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* continue.c (dynthrow): Giving up on HPUX stack growth.
+	"growth[] being optimized out" message disabled for HPUX.
+
+	* sys.c (try_open_file): Renamed from open_file.
+	(open_file): Now calls back to Scheme; applies `open-file'.
+
+Fri May 8 17:40:44 EDT 1998  Aubrey Jaffer  <jaffer@scm.colorage.net>
+
+	* patchlvl.h (SCMVERSION): Bumped from 5b4 to 5b5.
+
+1998-05-08  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (m_letrec1): added to support tagged environment frames.
+	(m_let, m_letrec, m_lambda, m_do): Now put an ISPCSYM in the last
+	cdr of the names they add to the environment, this is intended for
+	debugging.
+
+1998-05-07  Radey Shouman  <radey@colorage.com>
+
+	* repl.c (scm_brk_report): Added.
+	* scm.c (main): set global variables remembering initial brk.
+
+	* eval.c (ceval_1): LETREC now adds extra (empty) environment
+	frame so internal define does not upset memoization.
+	* r4rstest.scm: tests for LETREC/internal DEFINE bug added.
+
+1998-04-22    <radey@colorage.com>
+
+	* repl.c (repl_driver): Added sbrk call just before dumping --
+	fixes problems with linux dumped executables.
+
+1998-04-16    <radey@colorage.com>
+
+	* unif.c (scm_logaref): (scm_logaset): Added.
+
+Thu Apr 9 11:31:20 EDT 1998  Aubrey Jaffer  <jaffer@scm.colorage.net>
+
+	* patchlvl.h (SCMVERSION): Bumped from 5b3 to 5b4.
+
+1998-04-08  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* sys.c (gc_mark): first column #endif was within comment.
+	(sweep_symhash): was being called by igc -- even with NO_SYM_GC flag.
+
+1998-04-07  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* build.scm (link-c-program highc.31): added -stack 65000.
+
+	* sys.c (gc_mark): added CHECK_STACK;
+
+1998-04-06  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* sys.c (gc_mark): Checks strings and symbols for extra 0 byte.
+	(mark_syms): Added check for extra 0 byte; check strhash() of
+	symbol matches bucket index.
+
+1998-04-06  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* unif.c (make_uve): Changed to call makstr for strings.  This is
+	so extra byte will be 0.
+
+	* time.c (your_time): PharLap.51 ftime() is non-monotonic.  Fix
+	added to assure ftime() never decreases.
+
+1998-04-03  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* Init.scm (apply:nconc-to-last): Changed value to nconc2copy;
+	this allows apply's definition to remain unchanged.
+
+1998-04-03    <radey@colorage.com>
+
+	* rope.c: scm_cell_p now returns true for env cache cells, so they
+	may be printed during debugging.
+
+1998-04-03  Ben Caradoc-Davies  <bmcd@physics.otago.ac.nz>
+
+	* sys.c (gc_sweep): If a segment is freed during garbage
+	collection, the heap size counter is adjusted, but the cells
+	collected counter is not. Then when calculating cells allocated,
+	cells in a freed segment are counted twice (negatively).
+
+1998-04-03  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* scm.texi (Low Level Syntactic Hooks): Documented behavior of
+	@apply; turning a former bug into a feature.
+
+1998-04-01  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* scl.c (ex2in): changed tc7_cxr floident() to tc7_subr_1 ex2in()
+	so it will handle complex numbers.
+
+1998-04-01    <radey@colorage.com>
+
+	* eval.c (nconc2copy): Added to fix bug in apply that
+	allowed local SET! to mutate lists passed to APPLY.
+	* Init.scm (apply): now uses apply:nconc-to-copy.
+
+1998-03-26  Radey Shouman  <radey@colorage.com>
+
+	* eval.c (ilookup): (lookupcar): (farlookup): (ceval): (evalatomcar):
+	(ceval_1): (iqq): (wrapenv): Substantial changes to use
+	copy-collected stack cache intended to reduce time in gc.
+
+	* sys.c (egc_mark): (egc_sweep): (egc_copy): (egc_copy_stack):
+	(egc_copy_roots): (scm_egc): The cache garbage collector.
+	(scm_env_cons): (scm_env_cons2): (scm_env_acons): Functions to
+	allocate storage in the environment cache.
+
+	* repl.c (scm_egc_start): (scm_egc_end): (scm_ecache_report):
+	(scm_stack_trace): Added to support environment cache.
+	stack-trace now does not print all of stacktraces deeper than
+	10 levels.
+
+1998-03-20  Patrick Lecoanet  <lecoanet@cena.dgac.fr>
+
+	* sys.c (igc): Use of NO_SYM_GC flag fixed.
+
+1998-03-20  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* eval.c (m_define): "redefining built-in " message now
+	conditional on verbose >= 2.
+	(evalatomcar): unquoted vectors give warning when verbose >= 2.
+	(EVALCELLCAR): Now always uses ATOMP, which catches all non-pair cells.
+
+1998-03-20   Radey Shouman  <radey@colorage.com>
+
+	* Macro.scm (macro:compile-syntax-rules): Allows vectors to
+	be used as patterns and templates, per R5RS.
+	* eval.c (unpaint): Unpaints identifiers in quoted vectors.
+
+1998-03-09  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* repl.c (dump): made compatible with change to boot-tail
+	* time.c:
+	* scmfig.h: Removed support for HAVE_CONFIG_H.
+
+1998-03-09   Radey Shouman  <radey@colorage.com>
+
+	* time.c: I found that SCM on Linux uses ftime(), but that ftime()
+	is implemented in glibc as a call to time().  Linux does support
+	gettimeofday(), which does allow 10 msec resolution.  I tried
+	using the definition of ftime() using gettimeofday() at the end of
+	time.c (#ifdef freebsd).  It worked like a charm.
+
+1998-03-05   Radey Shouman  <radey@colorage.com>
+
+	* Init.scm (boot-tail): added `dumped?' argument.
+	* Init.scm (set-vicinities!): added.
+	* time.c (reset_time): Added to fix user time report for dumped
+	executables -- now reports the time since invocation, rather than
+	the time since dumping.
+	* scm.c (init_scm): Calls reset_time if dumped.
+	* scm.c (scm_find_impl): Wrapper for scm_find_impl_file.
+	* scm.c	(find-init-file): added Scheme interface for scm_find_impl.
+
+1998-02-27  Bob Schumaker <cobblers@netcom.com>
+
+	* dynl.c: added Macintosh support.
+
+1998-02-23  Drew Csillag <drew_csillag@geocities.com>
+
+	* scm.c: Port for __CYGWIN32__
+
+1998-02-17   Radey Shouman  <radey@colorage.com>
+
+	* Macro.scm (macro:compile-syntax-rules): Fixed to recognize
+	non-identifier literals in patterns.
+
+1998-02-09  <amu@mit.edu>
+
+	* scm.h (CGETUN):
+	* sys.c (noop0): I found two places where SCM uses a possibly
+	signed type for characters in a stream and risks confusing '\377'
+	(a legitimate character) with EOF (-1).  This patch addresses this
+	problem, and should make SCM's streams completely 8-bit clean.
+
+1998-02-11  Aubrey Jaffer  <jaffer@colorage.com>
+
+	* scm.texi (Index): combined indexes into one node.  Added use of
+	@url command.
+
+Mon Jan 12 10:12:20 1998  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* disarm.scm: (require 'disarm) disables opening and modifications
+	of files.
+
+Sun Jan 11 22:52:59 1998  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* posix.c: replaced C definitions of open-input-pipe and
+	open-output-pipe with call to scm_ldstr().
+
+Sat Jan 10 11:54:03 1998  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* Init.scm (read:eval-feature): moved into read:sharp (only use).
+	(read:sharp): now handles `#\.'; moved from lreadr in "repl.c".
+
+Sun Dec 21 19:40:31 1997  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* repl.c (exit_report exit_report): improved.
+	* sys.c (stack_report): improved.
+
+	* scl.c (iint2str): split into two routines.  Negative radix
+	argument now forces unsigned conversion.
+
+	* sys.c (alloc_some_heap): heap size variables were confused.
+	heap_cells is now used instead of heap_size.
+
+	* setjump.h (MIN_GC_YIELD NUM_HASH_BUCKETS): moved from scmfig.h.
+
+	* scm.h (THRASH): added.
+
+Mon, 01 Dec 1997 17:56:43 Andreas Menke  <asmenke@bln.de>
+
+	* sys.c (must_malloc must_realloc): Bumps up mtrigger if less than
+	1/8 of malloc space was reclaimed by GC.
+
+Wed Dec 17 22:40:45 1997  Aaron Ucko <amu@mit.edu>
+
+	* rgx.c (lregcomp): There is a small bug in rgx.c; a few things
+	should be set before sending the pattern buffer to
+	re_compile_pattern(). These fields should be set to zero, which
+	means the bug only appers after memory is reused. This only
+	affects use of GNU regex (i.e., only happens with _GNU_SOURCE
+	defined). cf. regex.info for more information.
+
+Wed Dec 17 22:40:45 1997  Aubrey Jaffer  <jaffer@ai.mit.edu>
+
+	* sys.c (free_storage): added fflush for stdout and stderr
+	(because those ports don't get closed).
+
+Sun Nov 30 23:21:05 1997  Aubrey Jaffer  <jaffer@martigny.ai.mit.edu>
+
+	* build (build-from-argv): split from "build.scm" so that cgi
+	scripts don't carry getopt baggage.
+
+Thu Nov 20 09:45:28 1997  Aubrey Jaffer  <jaffer@martigny.ai.mit.edu>
+
+	* build.scm (build): suppress-files field restored to C-libraries
+	table.  It really is the correct way to deal with "findexec.c".
+
 Sun Nov 16 13:43:21 1997  Aubrey Jaffer  <jaffer@martigny.ai.mit.edu>
 
 	* mkimpcat.scm: 'hobbit, 'scmhob, and 'build added.
 
 	* Link.scm (compile-file link-named-scm): Fixed.  Require of
- 	strings removed.  Tested with Hobbit 5x.
+	strings removed.  Tested with Hobbit 5x.
 	(scm:object-suffix): changed to ".o"; only used by link-named-scm.
 
 Sun Nov  2 23:15:57 1997  Aubrey Jaffer  <jaffer@martigny.ai.mit.edu>
@@ -227,8 +1126,8 @@ Fri Mar 7 21:12:17 EST 1997  Aubrey Jaffer  <jaffer@scm.bertronics.com>
 	* patchlvl.h (SCMVERSION): Bumped from 5a0 to 5a1.
 
 Mon Mar  3 20:09:43 1997  Radey Shouman  <shouman@zianet.com>
-	
-	* eval.c (renamed_ident): Renamed RENAME-IDENTIFIER to 
+
+	* eval.c (renamed_ident): Renamed RENAME-IDENTIFIER to
 	RENAMED-IDENTIFIER.
 
 	* eval.c (m_case): Avoid renaming data at the head of each