[Bug debug/107193] [13 regression] bootstrap error caused by r13-3172-gf30e9fd33e56a5

["crazylht at gmail dot com" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107193

--- Comment #3 from Hongtao.liu <crazylht at gmail dot com> ---
1212      /* Traverse the basic block, if two function calls within a basic
block
 1213        are mapped to the same line, assign a new discriminator because a
call
 1214        stmt could be a split point of a basic block.  */
 1215      for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
 1216        {
 1217          gimple *stmt = gsi_stmt (gsi);
 1218          expanded_location curr_locus_e;


Shouldn't curr_locus_e be defined outside of the loop?
orelse, the second iteration, it will be uninitialized and pased to
same_line_p？
 1219          if (curr_locus == UNKNOWN_LOCATION)
 1220            {
 1221              curr_locus = gimple_location (stmt);
 1222              curr_locus_e = expand_location (curr_locus);
 1223            }
 1224          else if (!same_line_p (curr_locus, &curr_locus_e,
gimple_location (stmt)))
 1225            {
 1226              curr_locus = gimple_location (stmt);
 1227              curr_locus_e = expand_location (curr_locus);
 1228              curr_discr = 0;
 1229            }
 1230          else if (curr_discr != 0)
 1231            {
 1232              location_t loc = gimple_location (stmt);
 1233              location_t dloc = location_with_discriminator (loc,
curr_discr);
 1234              gimple_set_location (stmt, dloc);
 1235            }
 1236          /* Allocate a new discriminator for CALL stmt.  */
 1237          if (gimple_code (stmt) == GIMPLE_CALL)
 1238            curr_discr = next_discriminator_for_locus (curr_locus);
 1239        }