1 files changed, 45 insertions, 30 deletions

diff --git a/src/3rdparty/freetype/src/bzip2/ftbzip2.c b/src/3rdparty/freetype/src/bzip2/ftbzip2.c
index 411c5d263b..ad342bd011 100644
--- a/src/3rdparty/freetype/src/bzip2/ftbzip2.c
+++ b/src/3rdparty/freetype/src/bzip2/ftbzip2.c
@@ -8,7 +8,7 @@
  * parse compressed PCF fonts, as found with many X11 server
  * distributions.
  *
- * Copyright (C) 2010-2020 by
+ * Copyright (C) 2010-2023 by
  * Joel Klinghed.
  *
  * based on `src/gzip/ftgzip.c'
@@ -57,28 +57,34 @@
   /* it is better to use FreeType memory routines instead of raw
      'malloc/free' */
 
-  typedef void *(* alloc_func)(void*, int, int);
-  typedef void (* free_func)(void*, void*);
+  typedef void* (*alloc_func)( void*, int, int );
+  typedef void  (*free_func) ( void*, void* );
+
 
   static void*
-  ft_bzip2_alloc( FT_Memory  memory,
-                  int        items,
-                  int        size )
+  ft_bzip2_alloc( void*  memory_,  /* FT_Memory */
+                  int    items,
+                  int    size )
   {
+    FT_Memory  memory = (FT_Memory)memory_;
+
     FT_ULong    sz = (FT_ULong)size * (FT_ULong)items;
     FT_Error    error;
     FT_Pointer  p  = NULL;
 
 
-    (void)FT_ALLOC( p, sz );
+    FT_MEM_QALLOC( p, sz );
     return p;
   }
 
 
   static void
-  ft_bzip2_free( FT_Memory  memory,
-                 void*      address )
+  ft_bzip2_free( void*  memory_,   /* FT_Memory */
+                 void*  address )
   {
+    FT_Memory  memory = (FT_Memory)memory_;
+
+
     FT_MEM_FREE( address );
   }
 
@@ -102,10 +108,11 @@
 
     FT_Byte    input[FT_BZIP2_BUFFER_SIZE];  /* input read buffer  */
 
-    FT_Byte    buffer[FT_BZIP2_BUFFER_SIZE]; /* output buffer      */
-    FT_ULong   pos;                          /* position in output */
+    FT_Byte    buffer[FT_BZIP2_BUFFER_SIZE]; /* output buffer          */
+    FT_ULong   pos;                          /* position in output     */
     FT_Byte*   cursor;
     FT_Byte*   limit;
+    FT_Bool    reset;                        /* reset before next read */
 
   } FT_BZip2FileRec, *FT_BZip2File;
 
@@ -153,6 +160,7 @@
     zip->limit  = zip->buffer + FT_BZIP2_BUFFER_SIZE;
     zip->cursor = zip->limit;
     zip->pos    = 0;
+    zip->reset  = 0;
 
     /* check .bz2 header */
     {
@@ -167,8 +175,8 @@
     }
 
     /* initialize bzlib */
-    bzstream->bzalloc = (alloc_func)ft_bzip2_alloc;
-    bzstream->bzfree  = (free_func) ft_bzip2_free;
+    bzstream->bzalloc = ft_bzip2_alloc;
+    bzstream->bzfree  = ft_bzip2_free;
     bzstream->opaque  = zip->memory;
 
     bzstream->avail_in = 0;
@@ -228,6 +236,7 @@
       zip->limit  = zip->buffer + FT_BZIP2_BUFFER_SIZE;
       zip->cursor = zip->limit;
       zip->pos    = 0;
+      zip->reset  = 0;
 
       BZ2_bzDecompressInit( bzstream, 0, 0 );
     }
@@ -302,18 +311,23 @@
 
       err = BZ2_bzDecompress( bzstream );
 
-      if ( err == BZ_STREAM_END )
+      if ( err != BZ_OK )
       {
-        zip->limit = (FT_Byte*)bzstream->next_out;
-        if ( zip->limit == zip->cursor )
-          error = FT_THROW( Invalid_Stream_Operation );
-        break;
-      }
-      else if ( err != BZ_OK )
-      {
-        zip->limit = zip->cursor;
-        error      = FT_THROW( Invalid_Stream_Operation );
-        break;
+        zip->reset = 1;
+
+        if ( err == BZ_STREAM_END )
+        {
+          zip->limit = (FT_Byte*)bzstream->next_out;
+          if ( zip->limit == zip->cursor )
+            error = FT_THROW( Invalid_Stream_Operation );
+          break;
+        }
+        else
+        {
+          zip->limit = zip->cursor;
+          error      = FT_THROW( Invalid_Stream_Operation );
+          break;
+        }
       }
     }
 
@@ -327,12 +341,13 @@
                              FT_ULong      count )
   {
     FT_Error  error = FT_Err_Ok;
-    FT_ULong  delta;
 
 
     for (;;)
     {
-      delta = (FT_ULong)( zip->limit - zip->cursor );
+      FT_ULong  delta = (FT_ULong)( zip->limit - zip->cursor );
+
+
       if ( delta >= count )
         delta = count;
 
@@ -362,9 +377,9 @@
     FT_Error  error;
 
 
-    /* Reset inflate stream if we're seeking backwards.        */
-    /* Yes, that is not too efficient, but it saves memory :-) */
-    if ( pos < zip->pos )
+    /* Reset inflate stream if seeking backwards or bzip reported an error. */
+    /* Yes, that is not too efficient, but it saves memory :-)              */
+    if ( pos < zip->pos || zip->reset )
     {
       error = ft_bzip2_file_reset( zip );
       if ( error )
@@ -494,7 +509,7 @@
 
     stream->size  = 0x7FFFFFFFL;  /* don't know the real size! */
     stream->pos   = 0;
-    stream->base  = 0;
+    stream->base  = NULL;
     stream->read  = ft_bzip2_stream_io;
     stream->close = ft_bzip2_stream_close;