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Diffstat (limited to 'xorg-server/test/signal-logging.c')
-rw-r--r--xorg-server/test/signal-logging.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/xorg-server/test/signal-logging.c b/xorg-server/test/signal-logging.c
index 1ef17af2c..e0eb81006 100644
--- a/xorg-server/test/signal-logging.c
+++ b/xorg-server/test/signal-logging.c
@@ -199,6 +199,14 @@ static void logging_format(void)
read_log_msg(logmsg);
assert(strcmp(logmsg, "(EE) substituted string\n") == 0);
+ /* Invalid format */
+#warning Ignore compiler warning below "lacks type at end of format". This is intentional.
+ LogMessageVerbSigSafe(X_ERROR, -1, "%4", 4);
+ read_log_msg(logmsg);
+ assert(strcmp(logmsg, "(EE) ") == 0);
+ LogMessageVerbSigSafe(X_ERROR, -1, "\n");
+ fseek(f, 0, SEEK_END);
+
/* number substitution */
ui = 0;
do {