X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fshared%2Futil.h;h=531242213490161c7572c25311c2d121289710fd;hb=5ffa8c818120e35c89becd938d160235c069dd12;hp=ca0c2e5e3deab194c1c7a03726ef8ce5ff7eba47;hpb=b9a5f8588facd64fcff0f75fa91e3f80730b93f2;p=elogind.git

diff --git a/src/shared/util.h b/src/shared/util.h
index ca0c2e5e3..531242213 100644
--- a/src/shared/util.h
+++ b/src/shared/util.h
@@ -481,6 +481,8 @@ cpu_set_t* cpu_set_malloc(unsigned *ncpus);
 int status_vprintf(const char *status, bool ellipse, bool ephemeral, const char *format, va_list ap) _printf_(4,0);
 int status_printf(const char *status, bool ellipse, bool ephemeral, const char *format, ...) _printf_(4,5);
 
+#define xsprintf(buf, fmt, ...) assert_se((size_t) snprintf(buf, ELEMENTSOF(buf), fmt, __VA_ARGS__) < ELEMENTSOF(buf))
+
 int fd_columns(int fd);
 unsigned columns(void);
 int fd_lines(int fd);