diff options
Diffstat (limited to 'src/include/c.h')
| -rw-r--r-- | src/include/c.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/src/include/c.h b/src/include/c.h index 658be50e0d3..33c95181952 100644 --- a/src/include/c.h +++ b/src/include/c.h @@ -1122,7 +1122,7 @@ typedef union PGAlignedXLogBlock #endif /* - * Macro that allows to cast constness away from an expression, but doesn't + * Macro that allows to cast constness and volatile away from an expression, but doesn't * allow changing the underlying type. Enforcement of the latter * currently only works for gcc like compilers. * @@ -1141,9 +1141,15 @@ typedef union PGAlignedXLogBlock (StaticAssertExpr(__builtin_types_compatible_p(__typeof(expr), const underlying_type), \ "wrong cast"), \ (underlying_type) (expr)) +#define unvolatize(underlying_type, expr) \ + (StaticAssertExpr(__builtin_types_compatible_p(__typeof(expr), volatile underlying_type), \ + "wrong cast"), \ + (underlying_type) (expr)) #else #define unconstify(underlying_type, expr) \ ((underlying_type) (expr)) +#define unvolatize(underlying_type, expr) \ + ((underlying_type) (expr)) #endif /* ---------------------------------------------------------------- |