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usp10: Fix memory leak when a font has 0 languages, scripts or features. 

Based on original fix proposded by Wojciech Pyczak.
This commit is contained in:
Aric Stewart 2013-02-08 09:46:08 -06:00 committed by Alexandre Julliard
parent c8b5a16f0c
commit 237ed21737
2 changed files with 21 additions and 4 deletions
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22
dlls/usp10/opentype.c
View File

@ -1898,6 +1898,9 @@ static void GPOS_expand_script_cache(ScriptCache *psc)
script = (const OT_ScriptList*)((const BYTE*)header + GET_BE_WORD(header->ScriptList));
count = GET_BE_WORD(script->ScriptCount);
if (!count)
return;
if (!psc->script_count)
{
psc->script_count = count;
@ -1941,10 +1944,11 @@ static void GPOS_expand_script_cache(ScriptCache *psc)
static void _initialize_script_cache(ScriptCache *psc)
{
if (!psc->script_count)
if (!psc->scripts_initialized)
{
GSUB_initialize_script_cache(psc);
GPOS_expand_script_cache(psc);
psc->scripts_initialized = TRUE;
}
}
@ -2029,6 +2033,10 @@ static void GPOS_expand_language_cache(LoadedScript *script)
count = GET_BE_WORD(table->LangSysCount);
TRACE("Deflang %p, LangCount %i\n",script->default_language.gpos_table, count);
if (!count)
return;
if (!script->language_count)
{
int i;
@ -2072,10 +2080,11 @@ static void GPOS_expand_language_cache(LoadedScript *script)
static void _initialize_language_cache(LoadedScript *script)
{
if (!script->language_count)
if (!script->languages_initialized)
{
GSUB_initialize_language_cache(script);
GPOS_expand_language_cache(script);
script->languages_initialized = TRUE;
}
}
@ -2194,6 +2203,10 @@ static void GPOS_expand_feature_cache(LPCVOID table, LoadedLanguage *language)
feature_list = (const OT_FeatureList*)((const BYTE*)header + GET_BE_WORD(header->FeatureList));
TRACE("%i features\n",count);
if (!count)
return;
if (!language->feature_count)
{
language->feature_count = count;
@ -2219,7 +2232,7 @@ static void GPOS_expand_feature_cache(LPCVOID table, LoadedLanguage *language)
}
}
}
else if (count)
else
{
language->features = HeapReAlloc(GetProcessHeap(),0,language->features, sizeof(LoadedFeature)*(language->feature_count + count));
@ -2245,10 +2258,11 @@ static void GPOS_expand_feature_cache(LPCVOID table, LoadedLanguage *language)
static void _initialize_feature_cache(ScriptCache *psc, LoadedLanguage *language)
{
if (!language->feature_count)
if (!language->features_initialized)
{
GSUB_initialize_feature_cache(psc->GSUB_Table, language);
GPOS_expand_feature_cache(psc->GPOS_Table, language);
language->features_initialized = TRUE;
}
}

3
dlls/usp10/usp10_internal.h
View File

@ -144,6 +144,7 @@ typedef struct {
OPENTYPE_TAG tag;
LPCVOID gsub_table;
LPCVOID gpos_table;
BOOL features_initialized;
INT feature_count;
LoadedFeature *features;
} LoadedLanguage;
@ -153,6 +154,7 @@ typedef struct {
LPCVOID gsub_table;
LPCVOID gpos_table;
LoadedLanguage default_language;
BOOL languages_initialized;
INT language_count;
LoadedLanguage *languages;
} LoadedScript;
@ -174,6 +176,7 @@ typedef struct {
LPVOID CMAP_Table;
LPVOID CMAP_format12_Table;
LPVOID GPOS_Table;
BOOL scripts_initialized;
INT script_count;
LoadedScript *scripts;