diff options
| -rw-r--r-- | gdk-pixbuf/pixops/pixops.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/gdk-pixbuf/pixops/pixops.c b/gdk-pixbuf/pixops/pixops.c index b7951c721..5564a4009 100644 --- a/gdk-pixbuf/pixops/pixops.c +++ b/gdk-pixbuf/pixops/pixops.c @@ -1272,18 +1272,17 @@ make_filter_table (PixopsFilter *filter) int i_offset, j_offset; int n_x = filter->x.n; int n_y = filter->y.n; - int n_weights; int *weights; - n_weights = SUBSAMPLE * SUBSAMPLE * n_x; - if (n_weights / (SUBSAMPLE * SUBSAMPLE) != n_x) - return NULL; /* overflow, bail */ + /* check n_x doesn't overflow */ + if (G_MAXINT / (SUBSAMPLE * SUBSAMPLE) < n_x) + return NULL; - n_weights *= n_y; - if (n_weights / (SUBSAMPLE * SUBSAMPLE * n_x) != n_y) - return NULL; /* overflow, bail */ + /* check n_y doesn't overflow */ + if (G_MAXINT / (SUBSAMPLE * SUBSAMPLE * n_x) < n_y) + return NULL; - weights = g_try_new (int, n_weights); + weights = g_try_new (int, SUBSAMPLE * SUBSAMPLE * n_x * n_y); if (!weights) return NULL; /* overflow, bail */ |