From 0260aa67fcc492e27f4fb75f3e8c3e573fb72d68 Mon Sep 17 00:00:00 2001
From: Olaf Seibert <rhialto@falu.nl>
Date: Wed, 12 Apr 2023 16:35:23 +0200
Subject: [PATCH] Eliminate alloca from ggml_graph_compute()

It has only 1 exit point (at the end), so adding a single free() is
enough.
---
 ggml.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ggml.c b/ggml.c
index a26b4853f..f5f39a644 100644
--- a/ggml.c
+++ b/ggml.c
@@ -9464,7 +9464,7 @@ void ggml_graph_compute(struct ggml_context * ctx, struct ggml_cgraph * cgraph)
         /*.has_work  =*/ false,
         /*.stop      =*/ false,
     };
-    struct ggml_compute_state * workers = n_threads > 1 ? alloca(sizeof(struct ggml_compute_state)*(n_threads - 1)) : NULL;
+    struct ggml_compute_state * workers = n_threads > 1 ? malloc(sizeof(struct ggml_compute_state)*(n_threads - 1)) : NULL;
 
     // create thread pool
     if (n_threads > 1) {
@@ -9876,6 +9876,8 @@ void ggml_graph_compute(struct ggml_context * ctx, struct ggml_cgraph * cgraph)
                 (double) perf_time_us_cur     / 1000.0,
                 (double) cgraph->perf_time_us / 1000.0 / cgraph->perf_runs);
     }
+
+    free(workers);
 }
 
 void ggml_graph_reset(struct ggml_cgraph * cgraph) {