listamsb: tweak popen() stuff.

1 files changed, 5 insertions, 5 deletions

diff --git a/listamsb.c b/listamsb.c
index 281e075..5071dc0 100644
--- a/listamsb.c
+++ b/listamsb.c
@@ -588,11 +588,11 @@ void open_output() {
 		verbose(1, "using stdout for output");
 	} else {
 		verbose(1, "using pipe for output: %s", pipe_command);
-		outfile = popen(pipe_command, "w");
-		if(!outfile) {
-			perror(pipe_command);
-			exit(1);
-		}
+		outfile = popen(pipe_command, "w"); /* "wb" not allowed! */
+		/* we probably never see this error. popen() fails only is
+		   we feed it an invalid mode, or if fork() or pipe() fails.
+		   all other errors are caught at pclose(). */
+		if(!outfile) os_err("|%s: %s", pipe_command, strerror(errno));
 		need_pclose = 1;
 	}
 }