can't read "target_info(target,ldflags)": no such element in array

The current failure in target.test is:
...
can't read "target_info(target,ldflags)": no such element in array
     while executing
"if { $target_info(target,ldflags) == "-Tidp.ld" } {
     incr matches
}"
     (file "../src/testsuite/runtest.all/target.test" line 76)
...

The test fails here:
...
push_config target idp
set matches 0
if { $target_info(target,name) == "idp" } {
     incr matches
}
if { $target_info(target,ldflags) == "-Tidp.ld" } {
     incr matches
}
...

It seems that the test assumes that "push_config target idp" sets 
$target_info(target,ldflags).

But looking at the implementation, it seems we just set 
target_info(target,name):
...
proc push_config { type name } {
     global target_info

     verbose "pushing config for $type, name is $name"
     if {[info exists target_info($type,name)]} {
	if { $target_info($type,name) == $name } {
             error "pushing config for $type, '$name' twice"
         }
     }
     set target_info($type,name) $name
}
...

I'm not sure if the test is incorrect, or the proc.

Thanks,
- Tom