shithub: freetype+ttf2subf

Download patch

ref: f631542dae1aaf9101135ed660cd3ff1d08ed93c
parent: c213c8a9bb2fcb4e5befc7aaa605125d3c5a2bf4
author: Alexei Podtelezhnikov <[email protected]>
date: Tue Apr 27 07:39:58 EDT 2021 

[lzw] Preserve decompression stack when relocating to heap.

* src/lzw/ftzopen.c (ft_lzwstate_stack_grow): Copy stack when
relocating to heap.

git/fs: mount .git/fs: mount/attach disallowed 
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,12 @@
 2021-04-27  Alexei Podtelezhnikov  <[email protected]>
 
+	[lzw] Preserve decompression stack when relocating to heap.
+
+	* src/lzw/ftzopen.c (ft_lzwstate_stack_grow): Copy stack when
+	relocating to heap.
+
+2021-04-27  Alexei Podtelezhnikov  <[email protected]>
+
 	* src/cid/cidgload.c (cid_load_glyph): Restore the glyph_length check.
 
 2021-04-27  Werner Lemberg  <[email protected]>
--- a/src/lzw/ftzopen.c
+++ b/src/lzw/ftzopen.c
@@ -127,6 +127,7 @@
 
       new_size = new_size + ( new_size >> 1 ) + 4;
 
+      /* if relocating to heap */
       if ( state->stack == state->stack_0 )
       {
         state->stack = NULL;
@@ -142,8 +143,12 @@
           return -1;
       }
 
-      if ( FT_RENEW_ARRAY( state->stack, old_size, new_size ) )
+      if ( FT_QRENEW_ARRAY( state->stack, old_size, new_size ) )
         return -1;
+
+      /* if relocating to heap */
+      if ( old_size == 0 )
+        FT_MEM_COPY( state->stack, state->stack_0, FT_LZW_DEFAULT_STACK_SIZE );
 
       state->stack_size = new_size;
     }