+2011-02-04 Bruno Haible <bruno@clisp.org>
+
+ mbsrtowcs: Prepare for new module mbsrtowwcs.
+ * lib/mbsrtowcs-impl.h: New file, extracted from lib/mbsrtowcs.c.
+ * lib/mbsrtowcs.c: Include it.
+ * modules/mbsrtowcs (Files): Add lib/mbsrtowcs-impl.h.
+
+2011-02-04 Bruno Haible <bruno@clisp.org>
+
+ vasnprintf: Reduce use of malloc for small format strings.
+ * lib/printf-args.h (N_DIRECT_ALLOC_ARGUMENTS): New macro.
+ (arguments): Add room for the first 7 arguments.
+ * lib/printf-parse.h (N_DIRECT_ALLOC_DIRECTIVES): New macro.
+ (char_directives, u8_directives, u16_directives, u32_directives): Add
+ room for the first 7 directives.
+ * lib/printf-parse.c: Include <string.h>.
+ (PRINTF_PARSE): Change memory handling code so that it uses the first
+ 7 preallocated elements in an 'arguments' or 'DIRECTIVES' struct.
+ * lib/vasnprintf.c (VASNPRINTF): Update memory handling code.
+ Reported by Pádraig Brady <P@draigbrady.com>.
+
+2011-01-31 Eric Blake <eblake@redhat.com>
+
+ dup2: work around Haiku bug
+ * m4/dup2.m4 (gl_FUNC_DUP2): Test for bug.
+ * lib/dup2.c (rpl_dup2) [!WIN32]: Add workaround.
+ * doc/posix-functions/dup2.texi (dup2): Document the bug.
+ * tests/test-dup2.c (main): Enhance test.
+
+2011-01-31 Simon Josefsson <simon@josefsson.org>
+
+ doc: off_t is not available in eglibc 2.11.2 stdio.h.
+ * doc/posix-headers/stdio.texi (stdio.h): Mention that off_t isn't
+ declared by eglibc 2.11.2.
+ * lib/stdio.in.h: Likewise.
+
+2011-01-31 Eric Blake <eblake@redhat.com>
+
+ ignore-value: add missing test dependency
+ * tests/test-ignore-value.c: Revert previous change; stdio.h
+ provides off_t.
+ * modules/ignore-value-tests (Depends-on): Add missing dependency.
+
+2011-01-30 Paul Eggert <eggert@cs.ucla.edu>
+
+ mktime: clarify long_int width checking
+ * lib/mktime.c (long_int_is_wide_enough): Move this assertion to
+ the top level, to make it clearer that the assumption about
+ long_int width is being checked. See
+ <http://lists.gnu.org/archive/html/bug-gnulib/2011-01/msg00554.html>.
+
+2011-01-30 Simon Josefsson <simon@josefsson.org>
+
+ ignore-value: Fix self-test.
+ * tests/test-ignore-value.c: Include sys/types.h for off_t.
+
+2011-01-29 Paul Eggert <eggert@cs.ucla.edu>
+
+ TYPE_MAXIMUM: avoid theoretically undefined behavior
+ * lib/intprops.h (TYPE_MINIMUM, TYPE_MAXIMUM): Do not shift a
+ negative number, which the C Standard says has undefined behavior.
+ In practice this is not a problem, but might as well do it by the book.
+ Reported by Rich Felker and Eric Blake; see
+ <http://lists.gnu.org/archive/html/bug-gnulib/2011-01/msg00493.html>.
+ * lib/strtol.c (TYPE_MINIMUM, TYPE_MAXIMUM): Likewise.
+ * m4/mktime.m4 (AC_FUNC_MKTIME): Likewise.
+ * m4/nanosleep.m4 (gl_FUNC_NANOSLEEP): Likewise.
+ * m4/parse-datetime.m4 (gl_PARSE_DATETIME): Likewise.
+ * m4/stdint.m4 (gl_STDINT_H): Likewise.
+ * lib/mktime.c (TYPE_MAXIMUM): Redo slightly to match the others.
+
+ mktime: #undef mktime before #defining it
+ * lib/mktime.c (mktime) [DEBUG]: #undef mktime before #defining it.
+
+ mktime: systematically normalize tm_isdst comparisons
+ * lib/mktime.c (isdst_differ): New function.
+ (__mktime_internal): Use it systematically for all isdst comparisons.
+ This completes the fix for libc BZ #6723, and removes the need for
+ normalizing tm_isdst. See
+ <http://sourceware.org/bugzilla/show_bug.cgi?id=6723>
+ (not_equal_tm) [DEBUG]: Use isdst_differ here, too.
+
+ mktime: fix some integer overflow issues and sidestep the rest
+
+ This was prompted by a bug report by Benjamin Lindner for MinGW
+ <http://lists.gnu.org/archive/html/bug-gnulib/2011-01/msg00472.html>.
+ His bug is due to signed integer overflow (0 - INT_MIN), and I
+ I scanned through mktime.c looking for other integer overflow
+ problems, fixing all the bugs I found.
+
+ Although the C Standard says the resulting code is still not safe
+ in the presence of integer overflow, in practice it should be good
+ enough for all real-world two's-complement implementations, except
+ for debugging environments that deliberately trap on integer
+ overflow (e.g., gcc -ftrapv).
+
+ * lib/mktime.c (WRAPV): New macro.
+ (SHR): Also check that long_int and time_t shift right in the
+ usual way, before using the fast-but-unportable method.
+ (TYPE_ONES_COMPLEMENT, TYPE_SIGNED_MAGNITUDE): Remove, no longer
+ used. The code already assumed two's complement, so there's
+ no need to test for alternatives. All uses removed.
+ (TYPE_MAXIMUM): Don't rely here on overflow behavior not defined by
+ the C standard. Problem reported by Rich Felker in
+ <http://lists.gnu.org/archive/html/bug-gnulib/2011-01/msg00488.html>.
+ (twos_complement_arithmetic): Also check long_int and time_t.
+ (time_t_avg, time_t_add_ok, time_t_int_add_ok): New functions.
+ (guess_time_tm, ranged_convert, __mktime_internal): Use them.
+ (__mktime_internal): Avoid integer overflow with unary subtraction
+ in two instances where -1 - X is an adequate replacement for -X,
+ since the calculations are approximate.
+
2011-01-29 Eric Blake <eblake@redhat.com>
mktime: avoid infinite loop
projects / gnulib.git / blobdiff