http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48174
--- Comment #4 from Bill Long <longb at cray dot com> 2011-03-18 16:08:37 UTC
---
Additional comment from originator of the bug at Cray:
The DIE tag DW_TAG_unspecified_parameters indicates that a variable argument
list starts. Try a simple C program for contrast. Just create x.c
#include <stdarg.h>
int foo (int a, ...)
{
return a;
}
and do
gcc -c -g x.c
then
readelf -wip x.o
and you'll see a subprogram, followed by the first formal parameter, then the
unspecified parameters. This doesn't seem to make sense in the Fortran context.
...
<1><37>: Abbrev Number: 4 (DW_TAG_subprogram)
<38> DW_AT_external : 1
<39> DW_AT_name : foo
<3d> DW_AT_decl_file : 1
<3e> DW_AT_decl_line : 4
<3f> DW_AT_prototyped : 1
<40> DW_AT_type : <0x6b>
<44> DW_AT_low_pc : 0x0
<4c> DW_AT_high_pc : 0x91
<54> DW_AT_frame_base : 0x0 (location list)
<58> DW_AT_sibling : <0x6b>
<2><5c>: Abbrev Number: 5 (DW_TAG_formal_parameter)
<5d> DW_AT_name : a
<5f> DW_AT_decl_file : 1
<60> DW_AT_decl_line : 3
<61> DW_AT_type : <0x6b>
<65> DW_AT_location : 3 byte block: 91 bc 7e (DW_OP_fbreg: -196)
<2><69>: Abbrev Number: 6 (DW_TAG_unspecified_parameters)
