This silences the following warning:
src/vertex-clipping.c:196:22: warning: array subscript is below array
bounds [-Warray-bounds]
ctx->prev.x = src->x[src->n - 1];
Signed-off-by: Ondřej Majerech <oxyd.o...@gmail.com>
---
src/vertex-clipping.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/src/vertex-clipping.c b/src/vertex-clipping.c
index db527e1..2bb8c0a 100644
--- a/src/vertex-clipping.c
+++ b/src/vertex-clipping.c
@@ -206,6 +206,9 @@ clip_polygon_left(struct clip_context *ctx, const struct
polygon8 *src,
enum path_transition trans;
int i;
+ if (src->n < 2)
+ return 0;
+
clip_context_prepare(ctx, src, dst_x, dst_y);
for (i = 0; i < src->n; i++) {
trans = path_transition_left_edge(ctx, src->x[i], src->y[i]);
@@ -222,6 +225,9 @@ clip_polygon_right(struct clip_context *ctx, const struct
polygon8 *src,
enum path_transition trans;
int i;
+ if (src->n < 2)
+ return 0;
+
clip_context_prepare(ctx, src, dst_x, dst_y);
for (i = 0; i < src->n; i++) {
trans = path_transition_right_edge(ctx, src->x[i], src->y[i]);
@@ -238,6 +244,9 @@ clip_polygon_top(struct clip_context *ctx, const struct
polygon8 *src,
enum path_transition trans;
int i;
+ if (src->n < 2)
+ return 0;
+
clip_context_prepare(ctx, src, dst_x, dst_y);
for (i = 0; i < src->n; i++) {
trans = path_transition_top_edge(ctx, src->x[i], src->y[i]);
@@ -254,6 +263,9 @@ clip_polygon_bottom(struct clip_context *ctx, const struct
polygon8 *src,
enum path_transition trans;
int i;
+ if (src->n < 2)
+ return 0;
+
clip_context_prepare(ctx, src, dst_x, dst_y);
for (i = 0; i < src->n; i++) {
trans = path_transition_bottom_edge(ctx, src->x[i], src->y[i]);
--
2.0.4
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