From d7871914acd2ed77f43344e36e08944524a67d9e Mon Sep 17 00:00:00 2001
From: Amaury Pouly <amaury.pouly@gmail.com>
Date: Mon, 16 Jan 2017 00:10:38 +0100
Subject: Fix dangerous casts

On Windows 64-bit, the size of long is 32-bit, thus any pointer to long cast is
not valid. In any case, one should use intptr_t and ptrdiff_t when casting
to integers. This commit attempts to fix all instances reported by GCC.
When relevant, I replaced code by the macros PTR_ADD, ALIGN_UP from system.h

Change-Id: I2273b0e8465d3c4689824717ed5afa5ed238a2dc
---
 lib/rbcodec/codecs/liba52/bitstream.c   | 2 +-
 lib/rbcodec/codecs/libtremor/codebook.c | 6 +++---
 lib/rbcodec/metadata/id3tags.c          | 6 +++---
 3 files changed, 7 insertions(+), 7 deletions(-)

(limited to 'lib/rbcodec')

diff --git a/lib/rbcodec/codecs/liba52/bitstream.c b/lib/rbcodec/codecs/liba52/bitstream.c
index 155368f..69dd1dc 100644
--- a/lib/rbcodec/codecs/liba52/bitstream.c
+++ b/lib/rbcodec/codecs/liba52/bitstream.c
@@ -35,7 +35,7 @@ void a52_bitstream_set_ptr (a52_state_t * state, uint8_t * buf)
 {
     int align;
 
-    align = (long)buf & 3;
+    align = (intptr_t)buf & 3;
     state->buffer_start = (uint32_t *) (buf - align);
     state->bits_left = 0;
     state->current_word = 0;
diff --git a/lib/rbcodec/codecs/libtremor/codebook.c b/lib/rbcodec/codecs/libtremor/codebook.c
index 7087f0a..f3ac5a2 100644
--- a/lib/rbcodec/codecs/libtremor/codebook.c
+++ b/lib/rbcodec/codecs/libtremor/codebook.c
@@ -293,7 +293,7 @@ static long decode_packed_block(codebook *book, oggpack_buffer *b,
     if(b->endbyte < b->storage - 8) {
       ogg_uint32_t *ptr;
       unsigned long bit, bitend;
-      unsigned long adr;
+      intptr_t adr;
       ogg_uint32_t cache = 0;
       int cachesize = 0;
       const unsigned int cachemask = (1<<book->dec_firsttablen)-1;
@@ -303,7 +303,7 @@ static long decode_packed_block(codebook *book, oggpack_buffer *b,
       const ogg_uint32_t *book_codelist = book->codelist;
       const char         *book_dec_codelengths = book->dec_codelengths;
 
-      adr = (unsigned long)b->ptr;
+      adr = (intptr_t)b->ptr;
       bit = (adr&3)*8+b->endbit;
       ptr = (ogg_uint32_t*)(adr&~3);
       bitend = ((adr&3)+(b->storage-b->endbyte))*8;
@@ -334,7 +334,7 @@ static long decode_packed_block(codebook *book, oggpack_buffer *b,
         cache >>= l;
       }
 
-      adr=(unsigned long)b->ptr;
+      adr=(intptr_t)b->ptr;
       bit-=(adr&3)*8+cachesize;
       b->endbyte+=bit/8;
       b->ptr+=bit/8;
diff --git a/lib/rbcodec/metadata/id3tags.c b/lib/rbcodec/metadata/id3tags.c
index 3492197..cda8ce3 100644
--- a/lib/rbcodec/metadata/id3tags.c
+++ b/lib/rbcodec/metadata/id3tags.c
@@ -191,7 +191,7 @@ static int unsynchronize(char* tag, int len, bool *ff_found)
             wp++;
         }
     }
-    return (long)wp - (long)tag;
+    return (intptr_t)wp - (intptr_t)tag;
 }
 
 static int unsynchronize_frame(char* tag, int len)
@@ -562,7 +562,7 @@ static int unicode_munge(char* string, char* utf8buf, int *len) {
             (*len)--;
             utf8 = iso_decode(str, utf8, -1, *len);
             *utf8 = 0;
-            *len = (unsigned long)utf8 - (unsigned long)utf8buf;
+            *len = (intptr_t)utf8 - (intptr_t)utf8buf;
             break;
 
         case 0x01: /* Unicode with or without BOM */
@@ -619,7 +619,7 @@ static int unicode_munge(char* string, char* utf8buf, int *len) {
         default: /* Plain old string */
             utf8 = iso_decode(str, utf8, -1, *len);
             *utf8 = 0;
-            *len = (unsigned long)utf8 - (unsigned long)utf8buf;
+            *len = (intptr_t)utf8 - (intptr_t)utf8buf;
             break;
     }
     return 0;
-- 
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