Pulling in gnulib just for the <verify.h> header is rather
expensive, especially since that header does not require us
to link against gnulib. It's better to make the event-test
example be standalone by just open-coding a more limited form
of a verify() macro that depends on modern gcc (we have enough
CI coverage that even though the verify is now a no-op in
older setups, we will still notice if we fail to add an event
- as a quick test, I still provoked a compile failure on
Fedora 29 by deleting a line from domainEvents).
Signed-off-by: Eric Blake <ebl...@redhat.com>
---
examples/object-events/event-test.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/examples/object-events/event-test.c
b/examples/object-events/event-test.c
index 8499e0b38e..6694d3dffc 100644
--- a/examples/object-events/event-test.c
+++ b/examples/object-events/event-test.c
@@ -6,8 +6,6 @@
#include <signal.h>
#include <inttypes.h>
-#include <verify.h>
-
#define VIR_ENUM_SENTINELS
#include <libvirt/libvirt.h>
@@ -17,6 +15,14 @@
#define STREQ(a, b) (strcmp(a, b) == 0)
#define NULLSTR(s) ((s) ? (s) : "<null>")
+#if (4 < __GNUC__ + (6 <= __GNUC_MINOR__) \
+ && (201112L <= __STDC_VERSION__ || !defined __STRICT_ANSI__) \
+ && !defined __cplusplus)
+# define verify(cond) _Static_assert(cond, "verify (" #cond ")")
+#else
+# define verify(cond)
+#endif
+
#ifndef ATTRIBUTE_UNUSED
# define ATTRIBUTE_UNUSED __attribute__((__unused__))
#endif
--
2.20.1
--
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