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Make use of static_assert conditional on whether it's available.

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This commit is contained in:
Dan Gohman
2019-05-27 09:07:04 -07:00
parent 176538b860
commit f486d61629
1 changed files with 5 additions and 0 deletions
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5
wasmtime-wasi/sandboxed-system-primitives/src/posix.c
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@@ -46,6 +46,9 @@
#include "rights.h" #include "rights.h"
#include "str.h" #include "str.h"
// static_assert is not defined in older compilers.
#ifdef static_assert
// struct iovec must have the same layout as __wasi_iovec_t. // struct iovec must have the same layout as __wasi_iovec_t.
static_assert(offsetof(struct iovec, iov_base) == static_assert(offsetof(struct iovec, iov_base) ==
offsetof(__wasi_iovec_t, buf), offsetof(__wasi_iovec_t, buf),
@@ -78,6 +81,8 @@ static_assert(sizeof(((struct iovec *)0)->iov_len) ==
static_assert(sizeof(struct iovec) == sizeof(__wasi_ciovec_t), static_assert(sizeof(struct iovec) == sizeof(__wasi_ciovec_t),
"Size mismatch"); "Size mismatch");
#endif
#if defined(WASMTIME_SSP_STATIC_CURFDS) #if defined(WASMTIME_SSP_STATIC_CURFDS)
static __thread struct fd_table *curfds; static __thread struct fd_table *curfds;
static __thread struct fd_prestats *prestats; static __thread struct fd_prestats *prestats;