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-rw-r--r--Src/exec.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/Src/exec.c b/Src/exec.c
index 38cc24a12..c39680de7 100644
--- a/Src/exec.c
+++ b/Src/exec.c
@@ -1319,7 +1319,9 @@ execlist(Estate state, int dont_change_job, int exiting)
 	    noerrexit = NOERREXIT_EXIT | NOERREXIT_RETURN;
 	    if (ltype & Z_SIMPLE) /* skip the line number */
 		pc2++;
-	    pm = setsparam("ZSH_DEBUG_CMD", getpermtext(state->prog, pc2, 0));
+	    pm = assignsparam("ZSH_DEBUG_CMD",
+			      getpermtext(state->prog, pc2, 0),
+			      0);
 
 	    exiting = donetrap;
 	    ret = lastval;