diff options
Diffstat (limited to 'src/H5private.h')
| -rw-r--r-- | src/H5private.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/H5private.h b/src/H5private.h index 3130bb1..19c3d33 100644 --- a/src/H5private.h +++ b/src/H5private.h @@ -289,6 +289,18 @@ # define H5_ATTR_MALLOC /*void*/ # endif +/* Turns off optimizations for a function. Goes after the return type. + * Not generally needed in the library, but ancient versions of clang + * (7.3.3, possibly others) have trouble with some of the onion VFD decode + * functions and need the optimizer turned off. This macro can go away when + * we figure out what's going on and can engineer another solution. + */ +# if defined(__clang__) +# define H5_ATTR_NO_OPTIMIZE __attribute__((optnone)) +# else +# define H5_ATTR_NO_OPTIMIZE /*void*/ +# endif + #else # define H5_ATTR_FORMAT(X, Y, Z) /*void*/ # define H5_ATTR_UNUSED /*void*/ @@ -302,6 +314,7 @@ # define H5_ATTR_PURE /*void*/ # define H5_ATTR_FALLTHROUGH /*void*/ # define H5_ATTR_MALLOC /*void*/ +# define H5_ATTR_NO_OPTIMIZE /*void*/ #endif /* clang-format on */ |