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gdb: improve debug output of function overload resolution

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Function overload resolution prints debug output if turned on via the
'set debug overload' command.  The output includes the badness vector
(BV).  For each function, this vector contains a badness value of the
length of parameters as its first element.  So, BV[0] does not
correspond to a parameter.  The badness values of parameters start
with BV[1].

A badness value is a pair; it contains a rank and a subrank.  Printing
both fields provides useful information.

Improve printing the badness vector along these lines.

gdb/ChangeLog:
2019-11-29  Tankut Baris Aktemur  <tankut.baris.aktemur@intel.com>

	* valops.c (find_oload_champ): Improve debug output.

Change-Id: I771017e7afbbaf4809e2238a9b23274f55c61f55
This commit is contained in:
Tankut Baris Aktemur 2019-11-29 12:17:36 +01:00
parent e9194a1a0e
commit a992a3b010
2 changed files with 12 additions and 3 deletions
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4
gdb/ChangeLog
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@ -1,3 +1,7 @@
2019-11-29 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* valops.c (find_oload_champ): Improve debug output.
2019-11-29 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* valops.c (find_oload_champ): Print part of debug messages

11
gdb/valops.c
View File

@ -3039,10 +3039,15 @@ find_oload_champ (gdb::array_view<value *> args,
"%s # of parms %d\n",
functions[ix]->demangled_name (),
(int) parm_types.size ());
for (jj = 0; jj < args.size () - static_offset; jj++)
fprintf_filtered (gdb_stderr,
"...Badness of length : {%d, %d}\n",
bv[0].rank, bv[0].subrank);
for (jj = 1; jj < bv.size (); jj++)
fprintf_filtered (gdb_stderr,
"...Badness @ %d : %d\n",
jj, bv[jj].rank);
"...Badness of arg %d : {%d, %d}\n",
jj, bv[jj].rank, bv[jj].subrank);
}
if (oload_champ_bv->empty ())