Alexandre Julliard pushed to branch master at wine / wine

Commits:

• b932b10f
  by Eric Tian at 2025-04-02T17:11:52+02:00

  gdiplus: Avoid storing NULL in gdip_font_link_section.
  
  In generate_font_link_info, because the return value of
  GdipCreateFontFromDC is not checked, section->font might be set to NULL.
  GdipMeasureString calls gdip_format_string, which then calls
  generate_font_link_info and font_link_get_text_extent_point. In
  font_link_get_text_extent_point, the font from gdip_font_link_section is also
  not checked for NULL, which may cause a crash.
  
  Therefore, in generate_font_link_info, when GdipCreateFontFromDC fails,
  store (GpFont *)base_font (as with IMLangFontLink_MapFont failure) to ensure
  the font in gdip_font_link_section is valid.
  

1 changed file:

• dlls/gdiplus/graphics.c