diff options
Diffstat (limited to 'libpam/include/pam_cc_compat.h')
| -rw-r--r-- | libpam/include/pam_cc_compat.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/libpam/include/pam_cc_compat.h b/libpam/include/pam_cc_compat.h index c43989f7..69190368 100644 --- a/libpam/include/pam_cc_compat.h +++ b/libpam/include/pam_cc_compat.h @@ -50,4 +50,17 @@ # define DIAG_POP_IGNORE_CAST_ALIGN /* empty */ #endif +/* + * Evaluates to + * 1, if the given two types are known to be the same + * 0, otherwise. + */ +#if PAM_GNUC_PREREQ(3, 0) +# define PAM_IS_SAME_TYPE(x_, y_) \ + __builtin_types_compatible_p(__typeof__(x_), __typeof__(y_)) +#else +/* Cannot tell whether these types are the same. */ +# define PAM_IS_SAME_TYPE(x_, y_) 0 +#endif + #endif /* PAM_CC_COMPAT_H */ |