diff options
Diffstat (limited to 'spice/macros.h')
| -rw-r--r-- | spice/macros.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/spice/macros.h b/spice/macros.h index 2efbaff..a0413f3 100644 --- a/spice/macros.h +++ b/spice/macros.h @@ -143,7 +143,12 @@ ((long) ((uint8_t*) &((struct_type*) 0)->member)) #endif -#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) +/* The SPICE_USE_SAFER_CONTAINEROF macro is used to avoid + * compilation breakage with older spice-server releases which + * triggered some errors without an additional patch. + */ +#if defined(__GNUC__) && defined(SPICE_USE_SAFER_CONTAINEROF) && \ + (__GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)) #define SPICE_CONTAINEROF(ptr, struct_type, member) ({ \ const typeof( ((struct_type *)0)->member ) *__mptr = (ptr); \ ((struct_type *)(void *)((uint8_t *)(__mptr) - SPICE_OFFSETOF(struct_type, member))); }) |