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-rw-r--r--Src/init.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/Src/init.c b/Src/init.c
index 01a969df4..7032ff8ae 100644
--- a/Src/init.c
+++ b/Src/init.c
@@ -1584,6 +1584,7 @@ zsh_main(UNUSED(int argc), char **argv)
 
     fdtable_size = zopenmax();
     fdtable = zshcalloc(fdtable_size*sizeof(*fdtable));
+    fdtable[0] = fdtable[1] = fdtable[2] = FDT_EXTERNAL;
 
     createoptiontable();
     emulate(zsh_name, 1, &emulation, opts);   /* initialises most options */