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[ARITH] If imaxdiv() isn't available, use / and % operators

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Although in posix, imaxdiv() isn't implemented on Debian/alpha, causing
dash to fail to build.  So use / and % operators if imaxdiv() isn't
available.

 http://bugs.debian.org/456398

Signed-off-by: Gerrit Pape <pape@smarden.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Gerrit Pape 2007-12-23 21:24:37 +08:00 committed by Herbert Xu
parent 1b212d313d
commit 469fad8670
3 changed files with 13 additions and 2 deletions
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4
ChangeLog
View File

@ -1,3 +1,7 @@
2007-12-23 Gerrit Pape <pape@smarden.org>
* If imaxdiv() isn't available, use / and % operators.
2007-12-23 Richard M Kreuter <kreuter@progn.net>
* Add set +o support.

5
configure.ac
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@ -33,8 +33,9 @@ dnl Checks for libraries.
dnl Checks for header files.
dnl Checks for library functions.
AC_CHECK_FUNCS(bsearch getpwnam getrlimit isalpha killpg mempcpy sigsetmask \
stpcpy strchrnul strsignal strtod strtoimax strtoumax sysconf)
AC_CHECK_FUNCS(bsearch getpwnam getrlimit imaxdiv isalpha killpg mempcpy \
sigsetmask stpcpy strchrnul strsignal strtod strtoimax \
strtoumax sysconf)
if test "$enable_fnmatch" = yes; then
use_fnmatch=

6
src/arith_yacc.c
View File

@ -88,7 +88,9 @@ static inline int higher_prec(int op1, int op2)
static intmax_t do_binop(int op, intmax_t a, intmax_t b)
{
#ifdef HAVE_IMAXDIV
imaxdiv_t div;
#endif
switch (op) {
default:
@ -96,8 +98,12 @@ static intmax_t do_binop(int op, intmax_t a, intmax_t b)
case ARITH_DIV:
if (!b)
yyerror("division by zero");
#ifdef HAVE_IMAXDIV
div = imaxdiv(a, b);
return op == ARITH_REM ? div.rem : div.quot;
#else
return op == ARITH_REM ? a % b : a / b;
#endif
case ARITH_MUL:
return a * b;
case ARITH_ADD: