From c29fc707b24b9528e41a242cfa298275708ffc76 Mon Sep 17 00:00:00 2001 From: weili Date: Thu, 8 Sep 2016 11:47:29 -0700 Subject: Fix memory management errors for font loading and copying A few issues are fixed: --Change variable |m_bLogic| in CFX_Font to |m_bShallowCopy| to reflect its meaning better; --For a shallow copy of font, we must guarantee that the copied font will not be deleted until the shallow copy is deleted. So need to increase the src font's refcount when copying it; --The stream |m_pOwnedStream| needs to have matched new/delete These errors need to be fixed before we can properly delete all the fonts to address the leaks. BUG=pdfium:242 Review-Url: https://codereview.chromium.org/2322043002 --- core/fxge/ge/cfx_font.cpp | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) (limited to 'core/fxge/ge/cfx_font.cpp') diff --git a/core/fxge/ge/cfx_font.cpp b/core/fxge/ge/cfx_font.cpp index 4aefec8d43..3d2e6d6499 100644 --- a/core/fxge/ge/cfx_font.cpp +++ b/core/fxge/ge/cfx_font.cpp @@ -220,7 +220,7 @@ const uint8_t CFX_Font::s_WeightPow_SHIFTJIS[] = { CFX_Font::CFX_Font() : #ifdef PDF_ENABLE_XFA - m_bLogic(FALSE), + m_bShallowCopy(false), m_pOwnedStream(nullptr), #endif // PDF_ENABLE_XFA m_Face(nullptr), @@ -239,7 +239,7 @@ FX_BOOL CFX_Font::LoadClone(const CFX_Font* pFont) { if (!pFont) return FALSE; - m_bLogic = TRUE; + m_bShallowCopy = true; if (pFont->m_pSubstFont) { m_pSubstFont.reset(new CFX_SubstFont); m_pSubstFont->m_Charset = pFont->m_pSubstFont->m_Charset; @@ -268,7 +268,7 @@ FX_BOOL CFX_Font::LoadClone(const CFX_Font* pFont) { CFX_Font::~CFX_Font() { #ifdef PDF_ENABLE_XFA - if (m_bLogic) { + if (m_bShallowCopy) { m_OtfFontData.DetachBuffer(); return; } @@ -285,7 +285,7 @@ CFX_Font::~CFX_Font() { CFX_GEModule::Get()->GetFontMgr()->ReleaseFace(m_Face); } #ifdef PDF_ENABLE_XFA - FX_Free(m_pOwnedStream); + delete m_pOwnedStream; #endif // PDF_ENABLE_XFA FX_Free(m_pGsubData); #if _FXM_PLATFORM_ == _FXM_PLATFORM_APPLE_ && !defined _SKIA_SUPPORT_ -- cgit v1.2.3