[SCM] archer-tromey-ambiguous-linespec: don't try to strdup NULL

[SCM] archer-tromey-ambiguous-linespec: don't try to strdup NULL

[tromey]

The branch, archer-tromey-ambiguous-linespec has been updated
       via  ca6ca903fc2de56be887695a2962e4b5f0289173 (commit)
      from  6bbd36b44ecd5c6d48e774df0f1d3d00a3a82a39 (commit)

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- Log -----------------------------------------------------------------
commit ca6ca903fc2de56be887695a2962e4b5f0289173
Author: Tom Tromey <tromey@redhat.com>
Date:   Thu Aug 25 12:16:10 2011 -0600

    don't try to strdup NULL

-----------------------------------------------------------------------

Summary of changes:
 gdb/breakpoint.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

First 500 lines of diff:
diff --git a/gdb/breakpoint.c b/gdb/breakpoint.c
index 77fb092..94d7220 100644
--- a/gdb/breakpoint.c
+++ b/gdb/breakpoint.c
@@ -7446,7 +7446,7 @@ create_breakpoints_sal (struct gdbarch *gdbarch,
   for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i)
     {
       char *addr_string = xstrdup (canonical->addr_string);
-      char *filter_string = xstrdup (lsal->canonical);
+      char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL;
       struct cleanup *inner = make_cleanup (xfree, addr_string);
 
       make_cleanup (xfree, filter_string);


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