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File mozilla-flex_buffer_overrun.patch of Package MozillaFirefox

# HG changeset patch
# Parent  c8e8364b303892fdb5a574b96411d2d8f699a15e
Patch lexical parser files generated by flex which may be potentially
exploitable in a buffer overrun. These seem to come from an upstream projects
(CMU Sphinx and ANGLE) so it should be fixed there in the first place.

CVE-2016-6354

https://bugzilla.suse.com/show_bug.cgi?id=990856

diff --git a/gfx/angle/src/compiler/preprocessor/Tokenizer.cpp b/gfx/angle/src/compiler/preprocessor/Tokenizer.cpp
--- a/gfx/angle/src/compiler/preprocessor/Tokenizer.cpp
+++ b/gfx/angle/src/compiler/preprocessor/Tokenizer.cpp
@@ -1375,17 +1375,17 @@ static int yy_get_next_buffer (yyscan_t 
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
 		/* don't do the read, it's not guaranteed to return an EOF,
 		 * just force an EOF
 		 */
 		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars = 0;
 
 	else
 		{
-			yy_size_t num_to_read =
+			int num_to_read =
 			YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
 
 		while ( num_to_read <= 0 )
 			{ /* Not enough room in the buffer - grow it. */
 
 			/* just a shorter name for the current buffer */
 			YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE;
 
diff --git a/gfx/angle/src/compiler/translator/glslang_lex.cpp b/gfx/angle/src/compiler/translator/glslang_lex.cpp
--- a/gfx/angle/src/compiler/translator/glslang_lex.cpp
+++ b/gfx/angle/src/compiler/translator/glslang_lex.cpp
@@ -2269,17 +2269,17 @@ static int yy_get_next_buffer (yyscan_t 
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
 		/* don't do the read, it's not guaranteed to return an EOF,
 		 * just force an EOF
 		 */
 		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars = 0;
 
 	else
 		{
-			yy_size_t num_to_read =
+			int num_to_read =
 			YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
 
 		while ( num_to_read <= 0 )
 			{ /* Not enough room in the buffer - grow it. */
 
 			/* just a shorter name for the current buffer */
 			YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE;
 
diff --git a/media/sphinxbase/src/libsphinxbase/lm/jsgf_scanner.c b/media/sphinxbase/src/libsphinxbase/lm/jsgf_scanner.c
--- a/media/sphinxbase/src/libsphinxbase/lm/jsgf_scanner.c
+++ b/media/sphinxbase/src/libsphinxbase/lm/jsgf_scanner.c
@@ -1242,17 +1242,17 @@ static int yy_get_next_buffer (yyscan_t 
 	if ( YY_CURRENT_BUFFER_LVALUE->yy_buffer_status == YY_BUFFER_EOF_PENDING )
 		/* don't do the read, it's not guaranteed to return an EOF,
 		 * just force an EOF
 		 */
 		YY_CURRENT_BUFFER_LVALUE->yy_n_chars = yyg->yy_n_chars = 0;
 
 	else
 		{
-			yy_size_t num_to_read =
+			int num_to_read =
 			YY_CURRENT_BUFFER_LVALUE->yy_buf_size - number_to_move - 1;
 
 		while ( num_to_read <= 0 )
 			{ /* Not enough room in the buffer - grow it. */
 
 			/* just a shorter name for the current buffer */
 			YY_BUFFER_STATE b = YY_CURRENT_BUFFER_LVALUE;