[binutils-gdb] gas: Fix a CFI label name memory leak in scfi.c

[binutils-gdb] gas: Fix a CFI label name memory leak in scfi.c

[H.J. Lu]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=cafca5eaa068eaaa3e3a2ffab356efb4714c2968

commit cafca5eaa068eaaa3e3a2ffab356efb4714c2968
Author: H.J. Lu <hjl.tools@gmail.com>
Date:   Tue Apr 9 16:04:16 2024 -0700

    gas: Fix a CFI label name memory leak in scfi.c
    
    CFI label name can be freed only after use.
    
            * scfi.c (handle_scfi_dot_cfi): Free CFI label name after use.
            * scfidw2gen.c (scfi_process_cfi_label): Add a comment.  Remove
            TODO on freeing CFI label name.

Diff:
---
 gas/scfi.c       | 1 +
 gas/scfidw2gen.c | 4 ++--
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/gas/scfi.c b/gas/scfi.c
index 929ea8a73e1..b29e922ecb3 100644
--- a/gas/scfi.c
+++ b/gas/scfi.c
@@ -1141,6 +1141,7 @@ handle_scfi_dot_cfi (ginsnS *ginsn)
 	  break;
 	case CFI_label:
 	  scfi_dot_cfi (CFI_label, 0, 0, 0, op->op_data->name, ginsn->sym);
+	  free ((char *) op->op_data->name);
 	  break;
 	case CFI_signal_frame:
 	  scfi_dot_cfi (CFI_signal_frame, 0, 0, 0, NULL, ginsn->sym);
diff --git a/gas/scfidw2gen.c b/gas/scfidw2gen.c
index ebf2d24dab2..2b018fac8bd 100644
--- a/gas/scfidw2gen.c
+++ b/gas/scfidw2gen.c
@@ -57,8 +57,8 @@ scfi_process_cfi_label (void)
   frch_ginsn_data_append (ginsn);
 
   scfi_op_add_cfi_label (ginsn, name);
-  /* TODO.  */
-  // free (name);
+  /* NB: Can't free NAME here since it will be used later.  Free it in
+     handle_scfi_dot_cfi after it is unused.  */
 
   demand_empty_rest_of_line ();
 }