[PATCH 4/4] comparison: silence a -Wformat-truncation warning

The names can be up to 128 characters each so they don't always fit.
Check for truncation instead of storing a truncated name.

Signed-off-by: Arka Mondal <[email protected]>
---
 smatch_comparison.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/smatch_comparison.c b/smatch_comparison.c
index c1af79f0..1a408fb8 100644
--- a/smatch_comparison.c
+++ b/smatch_comparison.c
@@ -2638,7 +2638,7 @@ void select_caller_info(const char *name, struct symbol *sym, char *value)
 	struct symbol *right_sym;
 	char comparison_name[128];
 	char right_buf[128];
-	int op, right_param;
+	int op, right_param, cnt;
 
 	if (!split_op_param_key(value, &op, &right_param, &right_key))
 		return;
@@ -2669,7 +2669,9 @@ void select_caller_info(const char *name, struct symbol *sym, char *value)
 	add_var_sym(&left_vsl, name, sym);
 	add_var_sym(&right_vsl, right_name, right_sym);
 
-	snprintf(comparison_name, sizeof(comparison_name), "%s vs %s", name, right_name);
+	cnt = snprintf(comparison_name, sizeof(comparison_name), "%s vs %s", name, right_name);
+	if (cnt >= sizeof(comparison_name))
+		return;
 
 	set_state(comparison_id, comparison_name, NULL,
 		  alloc_compare_state(NULL, name, left_vsl,
-- 
2.55.0