Problem report #116: base/src/emacs/src/fontset.c (face_for_char); UNINIT

[Dan Nicolaescu]

CID: 116
Checker: UNINIT (help)
File: base/src/emacs/src/fontset.c
Function: face_for_char
Description: Using uninitialized value "id" in call to function "fontset_font"

867     
868     int
869     face_for_char (f, face, c, pos, object)
870          FRAME_PTR f;
871          struct face *face;
872          int c, pos;
873          Lisp_Object object;
874     {
875       Lisp_Object fontset, rfont_def, charset;
876       int face_id;

Event var_decl: Declared variable "id" without initializer
Also see events: [uninit_use_in_call]

877       int id;
878     

At conditional (1): "c < 128" taking false path

879       if (ASCII_CHAR_P (c))
880         return face->ascii_face->id;
881     
882       xassert (fontset_id_valid_p (face->fontset));
883       fontset = FONTSET_FROM_ID (face->fontset);
884       xassert (!BASE_FONTSET_P (fontset));
885     

At conditional (2): "pos < 0" taking false path

886       if (pos < 0)
887         {
888           id = -1;
889           charset = Qnil;
890         }
891       else
892         {
893           charset = Fget_char_property (make_number (pos), Qcharset, 
object);

At conditional (3): "charset == Qnil" taking false path

894           if (NILP (charset))
895             id = -1;

At conditional (4): "hash_lookup >= 0" taking false path

896           else if (CHARSETP (charset))
897             {
898               Lisp_Object val;
899     
900               val = assoc_no_quit (charset, Vfont_encoding_charset_alist);
901               if (CONSP (val) && CHARSETP (XCDR (val)))
902                 charset = XCDR (val);
903               id = XINT (CHARSET_SYMBOL_ID (charset));
904             }
905         }
906     
907       font_deferred_log ("font for", Fcons (make_number (c), charset), 
Qnil);

Event uninit_use_in_call: Using uninitialized value "id" in call to function 
"fontset_font" [model]
Also see events: [var_decl]

908       rfont_def = fontset_font (fontset, c, face, id);
909       if (VECTORP (rfont_def))
910         {