diff options
Diffstat (limited to 'gcc/aclocal.m4')
| -rw-r--r-- | gcc/aclocal.m4 | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/gcc/aclocal.m4 b/gcc/aclocal.m4 index 83117a2..f2eda88 100644 --- a/gcc/aclocal.m4 +++ b/gcc/aclocal.m4 @@ -1192,9 +1192,11 @@ if test $gcc_cv_decl_char_bit = no; then gcc_cv_c_nbby= while test $i -lt 65; do AC_TRY_COMPILE(, - [switch(0) { case 0: case (char)(1 << $i) && (char)(1 << $i) != 1: ; }], - gcc_cv_c_nbby=$i - break) + [switch(0) { + case (unsigned char)((unsigned long)1 << $i) == ((unsigned long)1 << $i): + case (unsigned char)((unsigned long)1<<($i-1)) == ((unsigned long)1<<($i-1)): + ; }], + [gcc_cv_c_nbby=$i; break]) i=`expr $i + 1` done test -z "$gcc_cv_c_nbby" && gcc_cv_c_nbby=failed |