On Fri, Aug 17, 2012 at 3:23 AM, Mario Miller <mario-miller@xxxxxx> wrote: > > When I pass the DECL_INITIAL tree to debug_tree it prints out an empty line; so it seems to be NULL. > > When I pass the TRANSLATION_UNIT_DECL tree to debug_tree it prints out this: > > <translation_unit_decl 0x4051006c D.1 VOID file (null) line 0 col 0 > align 1> > > When I pass the FUNCTION_DECL tree to debug_tree it prints out this: > > <function_decl 0x410d9e80 generateOutput > type <function_type 0x405158a0 > type <void_type 0x40508840 void type_6 VOID > align 8 symtab 0 alias set -1 canonical type 0x40508840 > pointer_to_this <pointer_type 0x405088a0>> > QI > size <integer_cst 0x404f10e0 constant 8> > unit size <integer_cst 0x404f1100 constant 1> > align 8 symtab 0 alias set -1 canonical type 0x405158a0 > arg-types <tree_list 0x405020d8 value <void_type 0x40508840 void>> > pointer_to_this <pointer_type 0x4089f900>> > addressable used public external QI file /usr/doxygen/src/doxygen.h line 146 col 6 align 8 context <translation_unit_decl 0x4051006c D.1> > full-name "void generateOutput()" > chain <function_decl 0x410d9e00 parseInput>> > > I am parsing the main function of Doxygen in main.cpp. > It calls the global function generateOutput, which is defined and implemented in doxygen.h. > GCC finds this function, as you can see in the debug_tree of the FUNCTION_DECL. > But the TRANSLATION_UNIT_DECL of this function looks like it is 0. OK, so the DECL_CONTEXT of your function is a TRANSLATION_UNIT_DECL, and that TRANSLATION_UNIT_DECL appears to be empty. But I don't know why you are looking at DECL_CONTEXT anyhow--sorry I missed that earlier. The tree dump shows that your FUNCTION_DECL has DECL_EXTERNAL set. DECL_EXTERNAL means that this is an external reference to a function defined elsewhere, as in "extern int f();". Is this function defined in the code you are compiling? Ian
