From f5b370aebd16f3d19475651b2672c4a33fe77580 Mon Sep 17 00:00:00 2001
From: Jasper
Date: Tue, 9 Sep 2025 11:39:38 +0200
Subject: Fixed memory issue in 'matrix_backsubst'

Freeing the resulting vector resulted in an 'invalid pointer'
exception.
---
 matrix.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'matrix.c')

diff --git a/matrix.c b/matrix.c
index 8dc3fe5..ebcdecd 100644
--- a/matrix.c
+++ b/matrix.c
@@ -357,7 +357,7 @@ Vector *matrix_backsubst(const Matrix *R, const Vector *y)
 
     double sum;
 
-    for (int i = x->m; i >= 0; --i)
+    for (int i = x->m - 1; i >= 0; --i)
     {
         sum = vector_at(y, i);
         for (size_t j = i + 1; j < x->m; ++j)
-- 
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