[gcc r13-3213] Fix PR107193.

[gcc r13-3213] Fix PR107193.

[Eugene Rozenfeld]

https://gcc.gnu.org/g:80f414e6d73f9f1683f93d83ce63a6a482e54bee

commit r13-3213-g80f414e6d73f9f1683f93d83ce63a6a482e54bee
Author: Eugene Rozenfeld <erozen@microsoft.com>
Date:   Mon Oct 10 14:10:31 2022 -0700

    Fix PR107193.
    
    The bug was introduced in f30e9fd33e56a5a721346ea6140722e1b193db42.
    A variable (cur_locus_e) was incorrectly declared inside a loop.
    I also moved two other declarations (last and locus) down to make
    the code more clear.
    
    Tested on x86_64-pc-linux-gnu.
    
    gcc/ChangeLog:
            PR debug/107193
            * tree-cfg.cc (assign_discriminators): Move declaration of cur_locus_e
            out of the loop.

Diff:
---
 gcc/tree-cfg.cc | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gcc/tree-cfg.cc b/gcc/tree-cfg.cc
index 41f2925665f..ae781871a19 100644
--- a/gcc/tree-cfg.cc
+++ b/gcc/tree-cfg.cc
@@ -1204,9 +1204,8 @@ assign_discriminators (void)
       edge e;
       edge_iterator ei;
       gimple_stmt_iterator gsi;
-      gimple *last = last_stmt (bb);
-      location_t locus = last ? gimple_location (last) : UNKNOWN_LOCATION;
       location_t curr_locus = UNKNOWN_LOCATION;
+      expanded_location curr_locus_e = {};
       int curr_discr = 0;
 
       /* Traverse the basic block, if two function calls within a basic block
@@ -1215,7 +1214,7 @@ assign_discriminators (void)
       for (gsi = gsi_start_bb (bb); !gsi_end_p (gsi); gsi_next (&gsi))
 	{
 	  gimple *stmt = gsi_stmt (gsi);
-	  expanded_location curr_locus_e;
+
 	  if (curr_locus == UNKNOWN_LOCATION)
 	    {
 	      curr_locus = gimple_location (stmt);
@@ -1238,6 +1237,8 @@ assign_discriminators (void)
 	    curr_discr = next_discriminator_for_locus (curr_locus);
 	}
 
+      gimple *last = last_stmt (bb);
+      location_t locus = last ? gimple_location (last) : UNKNOWN_LOCATION;
       if (locus == UNKNOWN_LOCATION)
 	continue;