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Make sure that we have a real on-the-stack alloca()

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Because of how Guile saves and restores continuations (by copying the
stack), and how it uses alloca to create space for debug information
on the stack, we must have an alloca() that really does use the stack,
and not one that uses the heap.

To do this, we use the Gnulib "alloca-opt" module instead of "alloca".

This commit also updates the Gnulib sources from the current Gnulib
Git repository.
This commit is contained in:
Neil Jerram 2009-01-12 21:48:17 +00:00
commit 4a462e3544
23 changed files with 1426 additions and 1108 deletions
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34
m4/wchar.m4
View file

@ -7,7 +7,7 @@ dnl with or without modifications, as long as this notice is preserved.
dnl Written by Eric Blake.
# wchar.m4 serial 6
# wchar.m4 serial 22
AC_DEFUN([gl_WCHAR_H],
[
@ -61,9 +61,39 @@ AC_DEFUN([gl_WCHAR_MODULE_INDICATOR],
AC_DEFUN([gl_WCHAR_H_DEFAULTS],
[
GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH])
GNULIB_BTOWC=0; AC_SUBST([GNULIB_BTOWC])
GNULIB_WCTOB=0; AC_SUBST([GNULIB_WCTOB])
GNULIB_MBSINIT=0; AC_SUBST([GNULIB_MBSINIT])
GNULIB_MBRTOWC=0; AC_SUBST([GNULIB_MBRTOWC])
GNULIB_MBRLEN=0; AC_SUBST([GNULIB_MBRLEN])
GNULIB_MBSRTOWCS=0; AC_SUBST([GNULIB_MBSRTOWCS])
GNULIB_MBSNRTOWCS=0; AC_SUBST([GNULIB_MBSNRTOWCS])
GNULIB_WCRTOMB=0; AC_SUBST([GNULIB_WCRTOMB])
GNULIB_WCSRTOMBS=0; AC_SUBST([GNULIB_WCSRTOMBS])
GNULIB_WCSNRTOMBS=0; AC_SUBST([GNULIB_WCSNRTOMBS])
GNULIB_WCWIDTH=0; AC_SUBST([GNULIB_WCWIDTH])
dnl Assume proper GNU behavior unless another module says otherwise.
HAVE_BTOWC=1; AC_SUBST([HAVE_BTOWC])
HAVE_MBSINIT=1; AC_SUBST([HAVE_MBSINIT])
HAVE_MBRTOWC=1; AC_SUBST([HAVE_MBRTOWC])
HAVE_MBRLEN=1; AC_SUBST([HAVE_MBRLEN])
HAVE_MBSRTOWCS=1; AC_SUBST([HAVE_MBSRTOWCS])
HAVE_MBSNRTOWCS=1; AC_SUBST([HAVE_MBSNRTOWCS])
HAVE_WCRTOMB=1; AC_SUBST([HAVE_WCRTOMB])
HAVE_WCSRTOMBS=1; AC_SUBST([HAVE_WCSRTOMBS])
HAVE_WCSNRTOMBS=1; AC_SUBST([HAVE_WCSNRTOMBS])
HAVE_DECL_WCTOB=1; AC_SUBST([HAVE_DECL_WCTOB])
HAVE_DECL_WCWIDTH=1; AC_SUBST([HAVE_DECL_WCWIDTH])
REPLACE_MBSTATE_T=0; AC_SUBST([REPLACE_MBSTATE_T])
REPLACE_BTOWC=0; AC_SUBST([REPLACE_BTOWC])
REPLACE_WCTOB=0; AC_SUBST([REPLACE_WCTOB])
REPLACE_MBSINIT=0; AC_SUBST([REPLACE_MBSINIT])
REPLACE_MBRTOWC=0; AC_SUBST([REPLACE_MBRTOWC])
REPLACE_MBRLEN=0; AC_SUBST([REPLACE_MBRLEN])
REPLACE_MBSRTOWCS=0; AC_SUBST([REPLACE_MBSRTOWCS])
REPLACE_MBSNRTOWCS=0;AC_SUBST([REPLACE_MBSNRTOWCS])
REPLACE_WCRTOMB=0; AC_SUBST([REPLACE_WCRTOMB])
REPLACE_WCSRTOMBS=0; AC_SUBST([REPLACE_WCSRTOMBS])
REPLACE_WCWIDTH=0; AC_SUBST([REPLACE_WCWIDTH])
WCHAR_H=''; AC_SUBST([WCHAR_H])
])