diff options
Diffstat (limited to 'config')
| -rw-r--r-- | config/ChangeLog | 5 | ||||
| -rw-r--r-- | config/bitfields.m4 | 7 |
2 files changed, 8 insertions, 4 deletions
diff --git a/config/ChangeLog b/config/ChangeLog index 19f2103a3c0..d62ae4ce6c8 100644 --- a/config/ChangeLog +++ b/config/ChangeLog @@ -1,3 +1,8 @@ +2015-05-04 Trevor Saunders <tbsaunde+gcc@tbsaunde.org> + + * bitfields.m4: Change int to long long, and use bitfields of + width 1 instead of 0. + 2015-05-01 Trevor Saunders <tbsaunde+gcc@tbsaunde.org> * bitfields.m4: New file. diff --git a/config/bitfields.m4 b/config/bitfields.m4 index ee8f3b5baba..8185cd302a9 100644 --- a/config/bitfields.m4 +++ b/config/bitfields.m4 @@ -13,10 +13,9 @@ AC_DEFUN([gt_BITFIELD_TYPE_MATTERS], AC_CACHE_CHECK([if the type of bitfields matters], gt_cv_bitfield_type_matters, [ AC_TRY_COMPILE( - [struct foo1 { char x; char :0; char y; }; -struct foo2 { char x; int :0; char y; }; -int foo1test[ sizeof (struct foo1) == 2 ? 1 : -1 ]; -int foo2test[ sizeof (struct foo2) == 5 ? 1 : -1]; ], + [struct foo1 { char x; char y:1; char z; }; +struct foo2 { char x; long long int y:1; char z; }; +int foo1test[ sizeof (struct foo1) < sizeof (struct foo2) ? 1 : -1 ]; ], [], gt_cv_bitfield_type_matters=yes, gt_cv_bitfield_type_matters=no) ]) if test $gt_cv_bitfield_type_matters = yes; then |