From 9c3690d371b7c439f3d8392c883c3eedea2a9412 Mon Sep 17 00:00:00 2001
From: "andrey.bychkov" <andrey@signalmodelling.ru>
Date: Thu, 6 Aug 2026 10:18:30 +0300
Subject: [PATCH] fix(PIFFT_float): correct plan entry size from 4 to 8

The float FFT plan generator wrote 8 ints per entry (indices +0..+7)
but declared entrysize=4, causing heap overwrite into the next entry
and incorrect plan array sizing.
---
 libs/main/math/pifft.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libs/main/math/pifft.cpp b/libs/main/math/pifft.cpp
index 129328d0..afdbc6f2 100644
--- a/libs/main/math/pifft.cpp
+++ b/libs/main/math/pifft.cpp
@@ -1205,7 +1205,7 @@ void PIFFT_float::ftbase_ftbasegenerateplanrec(int n,
                                                ae_int_t stackptr,
                                                int debugi) {
 	int k, m, n1, n2, esize, entryoffset;
-	int ftbase_ftbaseplanentrysize    = 4;
+	int ftbase_ftbaseplanentrysize    = 8;
 	int ftbase_ftbasecffttask         = 0;
 	int ftbase_fftcooleytukeyplan     = 0;
 	int ftbase_fftbluesteinplan       = 1;