On Mon, Sep 19, 2016 at 3:52 AM, Swati Rathi <swatira...@cse.iitb.ac.in> wrote: > Hello, > > We want to fetch fields of a record type from the formal arguments of a > function. > For a RECORD_TYPE, we fetch the fields using TYPE_FIELDS. > > In the program 471.omnetpp (from the SPEC CPU2006 benchmark suite), we > encountered a case where we were not able to access the fields. Below is the > dump of the same record type showing different output in different > functions. We are not able to access fields of the record type for the first > case. > > Can you tell us the reason for different type nodes?
The first is a pointer to an incomplete struct like what you'd get from struct Foo *p; without a definition of struct Foo. > Also can you suggest an approach to solve our problem. Sorry, no. Richard. > ------------------------------------------------------------------------------------------- > Pointer declared as "struct cMessage *" is a parameter in one function. > Below is the dump of node "struct cMessage *". > > <pointer_type 0x2b8fad7baa80 > type <record_type 0x2b8fad7bab28 cMessage VOID > align 8 symtab 0 alias set -1 canonical type 0x2b8faa800690 context > <translation_unit_decl 0x2b8fad76e958 D.82130> > pointer_to_this <pointer_type 0x2b8fad7baa80> chain <type_decl > 0x2b8fad7b3730 cMessage>> > unsigned DI > size <integer_cst 0x2b8faa6c1ec0 type <integer_type 0x2b8faa6d20a8 > bitsizetype> constant 64> > unit size <integer_cst 0x2b8faa6c1ee0 type <integer_type 0x2b8faa6d2000 > sizetype> constant 8> > align 64 symtab 0 alias set -1 canonical type 0x2b8faa800e70 > pointer_to_this <pointer_type 0x2b8fad7d9000>> > > > Another pointer also declared as "struct cMessage *" is a parameter in > second function. Below is the dump of node "struct cMessage *". > > <pointer_type 0x2b8faa834150 > type <record_type 0x2b8faa82e1f8 cMessage addressable needs-constructing > BLK > size <integer_cst 0x2b8faa8186c0 constant 1408> > unit size <integer_cst 0x2b8faa818720 constant 176> > align 64 symtab 0 alias set -1 canonical type 0x2b8faa834c78 > fields <field_decl 0x2b8faa826850 D.2814 type <record_type > 0x2b8faa819150 cObject> > ignored BLK file omnet_include/cmessage.h line 84 col 15 > size <integer_cst 0x2b8faa6d4620 constant 448> > unit size <integer_cst 0x2b8faa7f0620 constant 56> > align 64 offset_align 128 > offset <integer_cst 0x2b8faa6c1f00 constant 0> > bit offset <integer_cst 0x2b8faa6c1f60 constant 0> context > <record_type 0x2b8faa82e1f8 cMessage> chain <field_decl 0x2b8faa8268e8 > swati_test>> context <translation_unit_decl 0x2b8faa6dcf18 D.2350> > pointer_to_this <pointer_type 0x2b8faa82e2a0> reference_to_this > <reference_type 0x2b8fab219c78> chain <type_decl 0x2b8faa82b678 cMessage>> > public unsigned DI > size <integer_cst 0x2b8faa6c1ec0 type <integer_type 0x2b8faa6d20a8 > bitsizetype> constant 64> > unit size <integer_cst 0x2b8faa6c1ee0 type <integer_type 0x2b8faa6d2000 > sizetype> constant 8> > align 64 symtab 0 alias set -1 canonical type 0x2b8faa800e70 > pointer_to_this <pointer_type 0x2b8faa8a3d20>> > > ------------------------------------------------------------------------------------------- > > Thank you. > > Regards, > Swati
