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Compile time check for being able to fit {unsigned} int inside void pointer

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This commit is contained in:
rl1987 2019-03-22 12:57:58 +02:00
parent 72e0dc0822
commit 13b28063f9
2 changed files with 10 additions and 0 deletions
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1
configure.ac
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@ -1588,6 +1588,7 @@ AC_CHECK_MEMBERS([struct timeval.tv_sec], , ,
AC_CHECK_SIZEOF(char) AC_CHECK_SIZEOF(char)
AC_CHECK_SIZEOF(short) AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(int) AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(unsigned int)
AC_CHECK_SIZEOF(long) AC_CHECK_SIZEOF(long)
AC_CHECK_SIZEOF(long long) AC_CHECK_SIZEOF(long long)
AC_CHECK_SIZEOF(__int64) AC_CHECK_SIZEOF(__int64)

9
src/test/test_ptr_slow.c
View File

@ -11,6 +11,15 @@
#include <stdint.h> #include <stdint.h>
#include <limits.h> #include <limits.h>
#if SIZEOF_INT > SIZEOF_VOID_P
#error "sizeof(int) > sizeof(void *) - Tor cannot be built on this platform!"
#endif
#if SIZEOF_UNSIGNED_INT > SIZEOF_VOID_P
#error "sizeof(unsigned int) > sizeof(void *) - Tor cannot be built on this \
platform!"
#endif
/** Assert that <b>a</b> can be cast to void * and back. */ /** Assert that <b>a</b> can be cast to void * and back. */
static void static void
assert_int_voidptr_roundtrip(int a) assert_int_voidptr_roundtrip(int a)