[gawk-diffs] [SCM] gawk branch, master, updated. gawk-4.1.0-3587-gf2fc8da

[Andrew J. Schorr]

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- Log -----------------------------------------------------------------
http://git.sv.gnu.org/cgit/gawk.git/commit/?id=f2fc8da25ca6fe6c089e89d2a612ec3271cf1ed1

commit f2fc8da25ca6fe6c089e89d2a612ec3271cf1ed1
Author: Andrew J. Schorr <address@hidden>
Date:   Sun Jan 6 10:25:11 2019 -0500

    Reset the implementation of empty arrays.

diff --git a/ChangeLog b/ChangeLog
index e713dd4..5efa721 100755
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,11 @@
 2019-01-06         Andrew J. Schorr      <address@hidden>
 
+       * array.c (do_delete): If the array is now empty, reset it to the
+       null implementation to avoid being locked into the backend
+       optimization previously selected.
+
+2019-01-06         Andrew J. Schorr      <address@hidden>
+
        Remove pointless alength macro/method that uses a needless
        function call indirection to access the table_size value.
 
diff --git a/array.c b/array.c
index d8fbab3..a47660c 100644
--- a/array.c
+++ b/array.c
@@ -608,6 +608,9 @@ do_delete(NODE *symbol, int nsubs)
 
        (void) assoc_remove(symbol, subs);
        DEREF(subs);
+       if (assoc_empty(symbol))
+               /* last element was removed, so reset array type to null */
+               null_array(symbol);
 
 #undef free_subs
 }

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

Summary of changes:
 ChangeLog | 6 ++++++
 array.c   | 3 +++
 2 files changed, 9 insertions(+)


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