X-Git-Url: https://git.ozlabs.org/?a=blobdiff_plain;f=ccan%2Ferr%2F_info;h=97bc0f9ed4ff03437804b2928326aa040d3e5665;hb=48b700953f9c856102e91596103238f5da9ea079;hp=5a5752bb0b297418486200661ec69db71d84dbdf;hpb=4776faf17adfa16ef5b2aeb24414b9d73a5789fc;p=ccan

diff --git a/ccan/err/_info b/ccan/err/_info
index 5a5752bb..97bc0f9e 100644
--- a/ccan/err/_info
+++ b/ccan/err/_info
@@ -8,11 +8,15 @@
  * A few platforms don't provide err.h; for those, this provides replacements.
  * For most, it simple includes the system err.h.
  *
+ * Unfortunately, you have to call err_set_progname() to tell the replacements
+ * your program name, otherwise it prints "unknown program".
+ *
  * Example:
  *	#include <ccan/err/err.h>
  *
  *	int main(int argc, char *argv[])
  *	{
+ *		err_set_progname(argv[0]);
  *		if (argc != 1)
  *			errx(1, "Expect no arguments");
  *		exit(0);