[FFmpeg-devel] [PATCHv2 1/2] lavc/vorbisdec: use ptrdiff_t to iterate over intptr_t

[remi at remlab.net]

From: Rémi Denis-Courmont <remi at remlab.net>

While this probably never overflows, we are better safe than sorry.

The callback prototype should probably also use ptrdiff_t or size_t,
but I diggress (this would affect the DSP callback prototype).
---
 libavcodec/vorbisdec.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavcodec/vorbisdec.c b/libavcodec/vorbisdec.c
index 38a5367be3..bfc4be6fc6 100644
--- a/libavcodec/vorbisdec.c
+++ b/libavcodec/vorbisdec.c
@@ -1581,8 +1581,7 @@ static inline int vorbis_residue_decode(vorbis_context *vc, vorbis_residue *vr,
 
 void ff_vorbis_inverse_coupling(float *mag, float *ang, intptr_t blocksize)
 {
-    int i;
-    for (i = 0;  i < blocksize;  i++) {
+    for (ptrdiff_t i = 0; i < blocksize; i++) {
         if (mag[i] > 0.0) {
             if (ang[i] > 0.0) {
                 ang[i] = mag[i] - ang[i];
-- 
2.37.2