[PATCH 1/2] util/cutils: Turn FIXME comment into QEMU_BUILD_BUG_ON()

[Markus Armbruster <armbru@redhat.com>]

qemu_strtoi64() assumes int64_t is long long.  This is marked FIXME.
Replace by a QEMU_BUILD_BUG_ON() to avoid surprises.

Same for qemu_strtou64().

Fix a typo in qemu_strtoul()'s contract while there.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
---
 util/cutils.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/util/cutils.c b/util/cutils.c
index fd591cadf0..b372dd3e68 100644
--- a/util/cutils.c
+++ b/util/cutils.c
@@ -502,7 +502,7 @@ int qemu_strtoul(const char *nptr, const char **endptr, int base,
  * Convert string @nptr to an int64_t.
  *
  * Works like qemu_strtol(), except it stores INT64_MAX on overflow,
- * and INT_MIN on underflow.
+ * and INT64_MIN on underflow.
  */
 int qemu_strtoi64(const char *nptr, const char **endptr, int base,
                  int64_t *result)
@@ -517,8 +517,9 @@ int qemu_strtoi64(const char *nptr, const char **endptr, int base,
         return -EINVAL;
     }
 
+    /* This assumes int64_t is long long TODO relax */
+    QEMU_BUILD_BUG_ON(sizeof(int64_t) != sizeof(long long)); 
     errno = 0;
-    /* FIXME This assumes int64_t is long long */
     *result = strtoll(nptr, &ep, base);
     return check_strtox_error(nptr, ep, endptr, errno);
 }
@@ -541,8 +542,9 @@ int qemu_strtou64(const char *nptr, const char **endptr, int base,
         return -EINVAL;
     }
 
+    /* This assumes uint64_t is unsigned long long TODO relax */
+    QEMU_BUILD_BUG_ON(sizeof(uint64_t) != sizeof(unsigned long long));
     errno = 0;
-    /* FIXME This assumes uint64_t is unsigned long long */
     *result = strtoull(nptr, &ep, base);
     /* Windows returns 1 for negative out-of-range values.  */
     if (errno == ERANGE) {
-- 
2.21.0