The newlib C library (used in Cygwin) has alternative names for
nl_langinfo GNU extensions
* configure.ac (_NL_NUMERIC_GROUPING): new test
* libguile/i18n.c (INT_CURR_SYMBOL, MON_DECIMAL_POINT, MON_THOUSANDS_SEP)
(MON_GROUPING, POSITIVE_SIGN, NEGATIVE_SIGN, GROUPING, INT_FRAC_DIGITS)
(FRAC_DIGITS, P_CS_PRECEDES, P_SEP_BY_SPACE, N_CS_PRECEDES, N_SEP_BY_SPACE)
(P_SIGN_POSN, N_SIGN_POSN, INT_P_CS_PRECEDES, INT_P_SEP_BY_SPACE)
(INT_N_CS_PRECEDES, INT_N_SEP_BY_SPACE, INT_P_SIGN_POSN, INT_N_SIGN_POSN)
[HAVE_DECL__NL_NUMERIC_GROUPING]: map to newlib C constants, when present
Some operating systems require a O_BINARY flag.
* libguile/filesys.c (scm_i_mkstemp): Don't mask out O_BINARY flag
* test-suite/tests/posix.test ("binary mode honored"): new test
Partially fixes <https://bugs.gnu.org/33044>.
Reported by Tom de Vries <tdevries@suse.de>.
* libguile/random.c (scm_seed_to_random_state): Use 'scm_to_utf8_string'
(or 'scm_to_latin1_string' for a narrow string, for compatibility) to
convert the string into raw bytes for use by 'scm_c_make_rstate'. Make
sure the length in bytes fits within an 'int'.
Partial fix for <https://bugs.gnu.org/33044>.
Reported by Tom de Vries <tdevries@suse.de>.
Fix several instances of the mistake of using 'scm_from_locale_*' for C
strings that originally came from a C string literal. Change several
uses of 'scm_from_latin1_*' as well, to promote the practice of writing
code that works for arbitrary C string literals.
Also add missing years to the copyright notices of changed files, based
on the git history.
* libguile/debug-malloc.c, libguile/deprecation.c, libguile/error.c,
libguile/eval.c, libguile/expand.c, libguile/extensions.c,
libguile/filesys.c, libguile/init.c, libguile/load.c,
libguile/modules.c, libguile/pairs.c, libguile/posix.c,
libguile/print.c, libguile/random.c, libguile/read.c,
libguile/regex-posix.c, libguile/snarf.h, libguile/srfi-13.c,
libguile/stacks.c, libguile/stime.c, libguile/strports.c,
libguile/values.c: Use 'scm_from_utf8_*' where appropriate.
Fixes <https://bugs.gnu.org/21901>.
Reported by Zefram <zefram@fysh.org>.
* libguile/numbers.c: Add another top-level 'verify' to ensure that
LONG_MIN is not a fixnum.
(scm_ash, scm_round_ash): Ensure that when the shift count is LONG_MIN,
it is not handled via the normal code path, to avoid signed overflow
when the shift count is negated.
* test-suite/tests/numbers.test: Add tests.
This is a followup to commit 011aec7e24.
When rounding, right shifting a negative integer by a huge shift count
results in 0, not -1.
* libguile/numbers.c: Add top-level 'verify' to ensure that the
assumptions in 'scm_ash' and 'scm_round_ash' are valid.
(scm_round_ash): In the case that handles huge right shifts, require
that the shift count _exceeds_ the integer length, and return 0 instead
of -1.
* test-suite/tests/numbers.test: Adjust tests accordingly.
Fixes <https://bugs.gnu.org/32644>.
Reported by Stefan Israelsson Tampe <stefan.itampe@gmail.com>.
The need for this arose because the type inferrer for 'ursh' sometimes
passes (- 1 (expt 2 64)) as the second argument to 'ash'.
* libguile/numbers.c (scm_ash, scm_round_ash): Gracefully handle several
cases where the shift count does not fit in a C 'long'.
* test-suite/tests/numbers.test: Add tests.
Fixes <https://bugs.gnu.org/32938>.
Reported by Josh Datko <jbd@cryptotronix.com>.
* libguile/validate.h (SCM_VALIDATE_LIST_COPYLEN)
(SCM_VALIDATE_NONEMPTYLIST_COPYLEN): Use '!=' instead of '>=' to
validate the result of 'scm_ilength' after it has been stored in
the user variable 'cvar'.
* test-suite/tests/bytevectors.test: Add tests. Use '#:use-module'
instead of ':use-module' in 'define-module' form.
* libguile/boolean.c (scm_nil_p): Improve docstring.
* doc/ref/api-languages.texi (Nil): Add documentation for 'nil?', along
with a description of how Elisp interprets Scheme booleans and
end-of-list.
Fixes <https://bugs.gnu.org/32786>.
'scm_atomic_compare_and_swap_scm' is a thin wrapper around
'atomic_compare_exchange_weak' (where available), and therefore it may
spuriously fail on some platforms, leaving the atomic object unchanged
even when the observed value is equal to the expected value. Since
'scm_atomic_compare_and_swap_scm' returns both a boolean result and the
observed value, the caller is able to detect spurious failures when
using that API.
'atomic-box-compare-and-swap!' presents a simpler API, returning only
the observed value. The documentation advises callers to assume that
the exchange succeeded if the observed value is 'eq?' to the expected
value. It's therefore not possible to report spurious failures with
this API.
'atomic-box-compare-and-swap!' uses 'scm_atomic_compare_and_swap_scm',
and prior to this commit would simply ignore the boolean result and
return the observed value. In case of spurious failures, the caller
would legitimately conclude that the exchange had succeeded.
With this commit, 'atomic-box-compare-and-swap!' now retries in case of
spurious failures.
* libguile/atomic.c (scm_atomic_box_compare_and_swap_x): If
'scm_atomic_compare_and_swap_scm' returns false and the observed value
is equal to 'expected', then try again.
* libguile/vm-engine.c (atomic-box-compare-and-swap!): Ditto.
Reported by Ricardo Wurmus <rekado@elephly.net>.
Fixes <https://bugs.gnu.org/32161>.
* libguile/r6rs-ports.c (custom_binary_port_seek): Use 'scm_to_off_t'
instead of 'scm_to_int'.
* test-suite/tests/r6rs-ports.test ("8.2.7 Input Ports")["custom binary
input port position, long offset"]: New test.
Fixes <https://bugs.gnu.org/28211>.
* libguile/vm-engine.c (call, call_label, handle_interrupts): Add
'new_fp' variable; set the dynamic link and return address of the frame
at NEW_FP before setting 'vp->fp'. This fixes a bug whereby, in a
multi-threaded context, the stack-marking code could run after vp->fp
has been set but before its dynamic link has been set, leading the
stack-walking code in 'scm_i_vm_mark_stack' to exit early on.
Previously 'vm-frame-older' would fail to traverse the chain of frames.
* libguile/libguile-2.2-gdb.scm (uint-type): New variable
(vm-frame): Fix "saved ip" and "saved fp" computation. The latter had
been broken roughly since commit
72353de77d.
(vm-frame-older): Return #f when IP is zero, not when FP is zero.
(vm-frame-function-name): Wrap 'vm-frame-program-debug-info' in
'false-if-exception'
Fixes <https://bugs.gnu.org/31879>.
* libguile/modules.c (import_obarray_mutex): New variable.
(resolve_duplicate_binding, module_imported_variable): Acquire it before
accessing an obarray.
* libguile/r6rs-ports.c (scm_get_bytevector_n, scm_get_bytevector_n_x):
Turn 'c_count' and related variables into a 'size_t', and use
'scm_to_size_t' instead of 'scm_to_uint'.
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Previously 'load-thunk-from-memory' would often throw to 'system-error'
based on a stale value in 'errno', leading to incorrect error messages.
* libguile/loader.c (load_thunk_from_memory): Set 'errno' to 0 before
jumping to cleanup in the ABORT preprocessor macro, and also in the case
when 'process_dynamic_segment' reports an error.
Previously 'load-thunk-from-memory' would often throw to 'system-error'
when passed an incorrect ELF file, leading to incorrect error messages.
* libguile/loader.c (load_thunk_from_memory): Reset 'errno' when
'check_elf_header' returns non-NULL.
* test-suite/tests/vm.test: New file.
* test-suite/Makefile.am (SCM_TESTS): Add it.
* libguile/posix.c (scm_crypt): Take 'scm_i_misc_mutex' right before
calling 'crypt'. Move 'SCM_SYSERROR' call after 'scm_dynwind_end'.
* test-suite/tests/posix.test ("crypt"): New test prefix.
Fixes <https://bugs.gnu.org/29151> and <https://bugs.gentoo.org/613986>.
Backtrace looks like that:
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x200000000014a5c0 in scm_ia64_longjmp (JB=0x6000000000817020, VAL=1) at continuations.c:372
372 t->pending_rbs_continuation->backing_store,
[Current thread is 1 (Thread 0x2000000000049340 (LWP 8190))]
(gdb) bt
#0 0x200000000014a5c0 in scm_ia64_longjmp (JB=0x6000000000817020, VAL=1) at continuations.c:372
#1 0x2000000000148e00 in scm_c_abort (vm=0x60000000000edea0, tag=0x6000000000795ba0, n=0, argv=0x60000fffff7f0ce0, cookie=-1) at control.c:239
#2 0x2000000000149070 in scm_at_abort (tag=0x6000000000795ba0, args=0x304) at control.c:258
(gdb) print t
$2 = (scm_i_thread *) 0x6000000000068000
(gdb) print t->pending_rbs_continuation
$3 = (scm_t_contregs *) 0xffeb
The problem here is the value of 't->pending_rbs_continuation' pointer.
It's supposed to poin to a register stack pointer or be NULL if not yet
backed up.
The problem is it is never initialized to NULL at creation time and
contained garbage on stack. Sometimes people are lucky and have zeros
on stack and guile works. But sometimes there is something and guile
crashes.
The fix is trivial: initialize 'pending_rbs_continuation = NULL'
at thread registration time (the same way other threads are registered).
Reported-by: Matt Turner
* libguile/threads.c (guilify_self_1): Initialize pending_rbs_continuation
to avoid crash on ia64.
Signed-off-by: Sergei Trofimovich <slyfox@gentoo.org>
Signed-off-by: Ludovic Courtès <ludo@gnu.org>
Fixes <https://bugs.gnu.org/29226>.
* libguile/load.c (scm_primitive_load_path): Set 'compiled_thunk' to
SCM_BOOL_F when *scm_loc_fresh_auto_compile is true.
* module/ice-9/boot-9.scm (load-in-vicinity)[load-absolute]: Call
'pre-compiled' only when %FRESH-AUTO-COMPILE is false.
If 'readdir' returned an error, we'd call SCM_SYSERROR, which would try
to acquire 'scm_i_misc_mutex' and sit there forever because it was
already taken.
Reported at <https://bugs.gnu.org/29335>.
* libguile/filesys.c (scm_opendir): Allocate storage for a mutex and
store it as the third word of the SMOB.
(scm_readdir): Use that mutex instead of 'scm_i_misc_mutex'. Fixes the
deadlock upon error.
(scm_rewindir): Lock the mutex around the 'rewinddir' call.
* libguile/Makefile.am (INSTANTIATE): New variable.
(install-data-hook): Use it.
* libguile/libguile-2.2-gdb.scm: Autoload (system vm debug).
Augment %load-path and %load-compiled-path, and reload (system base
types).
* module/system/base/types.scm: Remove #:hide to be 2.0-compatible.
Use (system syntax internal) conditionally when on 2.2.
* libguile/weak-table.c (scm_t_weak_table); Add last_gc_no member.
* libguile/weak-table.c (vacuum_weak_table): Only vacuum if we haven't
done so since the last GC.
(scm_c_weak_table_ref, scm_c_weak_table_put_x, scm_c_weak_table_remove_x)
(scm_c_weak_table_fold): Vacuum the weak table if needed.
(scm_weak_table_clear_x): Update last_gc_no flag, as no more vacuuming
will be needed.
This change should make weak tables work better with libgc, as the weak
components that need mark functions are smaller, so they don't overflow
the mark queue. Also this prevents the need to move disappearing
links.
* libguile/weak-table.c (scm_t_weak_entry): Change to be a hash table
chain entry.
(struct weak_entry_data, do_read_weak_entry, read_weak_entry): Read
out the key and value directly.
(GC_move_disappearing_link, move_disappearing_links, move_weak_entry):
Remove.
(scm_t_weak_table): Rename "entries" member to "buckets", and "size" to
"n_buckets".
(hash_to_index, entry_distance, rob_from_rich, give_to_poor): Remove.
(mark_weak_key_entry, mark_weak_value_entry): Mark a single link, and
the next link.
(mark_doubly_weak_entry): New kind.
(allocate_entry): Allocate a single entry.
(add_entry): New helper.
(resize_table): Reimplement more like normal hash tables.
(vacuum_weak_table): Adapt to new implementation.
(weak_table_ref, weak_table_put_x, weak_table_remove_x): Adapt.
(make_weak_table): Adapt.
(scm_weak_table_clear_x): Actually unregister the links to prevent a
memory leak.
(scm_c_weak_table_fold): Collect items in an alist, then fold outside
the lock.
(scm_weak_table_prehistory): Initialize doubly_weak_gc_kind.
* module/ice-9/arrays.scm (array-print-prefix): New private function.
* libguile/arrays.c (scm_i_print_array): Reuse (array-print-prefix) from
(ice-9 arrays). Make sure to release the array handle.
* module/ice-9/pretty-print.scm (truncated-print): Support
bitvectors.
Don't try to guess the array prefix but call array-print-prefix from
(ice-9 arrays) instead.
Fix call to print-sequence to support non-zero lower bound arrays.
* test-suite/tests/arrays.test: Test that arrays print properly.
* test-suite/tests/print.test: Test truncated-print with bitvectors,
non-zero lower bound arrays.
* module/ice-9/arrays.scm (array-copy): New function, export.
* module/Makefile.am: Install (ice-9 arrays).
* doc/ref/api-data.texi: Add documentation for (ice-9 arrays).
* libguile/quicksort.i.c: Use signed bounds throughout.
* libguile/sort.c (scm_restricted_vector_sort_x): Fix error calls. Fix
calls to quicksort.
* test-suite/tests/sort.test: Actually test that the sorted results
match the original data. Test cases for non-zero base index arrays for
sort, sort!, and stable-sort!.
