planner.c: fix 'disclaimer' pointing to stack memory

In add_plan_to_notes() the 'disclaimer' is set to the temporary
buffer 'buf'. By making 'buf' static, 'disclaimer' now points to a
persistent buffer.

Bug was reported as bad characters when printing the planner
deco text.

Reported-by: Stefan Fuchs <sfuchs@gmx.de>
Signed-off-by: Lubomir I. Ivanov <neolit123@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/planner.c b/planner.c
index 22d37165a..9c8b9e952 100644
--- a/planner.c
+++ b/planner.c
@@ -534,7 +534,8 @@ static void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive, bool
 	const unsigned int sz_temp = 100000;
 	char *buffer = (char *)malloc(sz_buffer);
 	char *temp = (char *)malloc(sz_temp);
-	char buf[1000], *deco;
+	char *deco;
+	static char buf[1000];
 	int len, lastdepth = 0, lasttime = 0, lastsetpoint = -1, newdepth = 0, lastprintdepth = 0, lastprintsetpoint = -1;
 	struct gasmix lastprintgasmix = {{ -1 }, { -1 }};
 	struct divedatapoint *dp = diveplan->dp;