From 8654f124d14c108935ca4fedd744bbf18409fb6f Mon Sep 17 00:00:00 2001
From: twinaphex <libretro@gmail.com>
Date: Sat, 9 Sep 2017 04:56:13 +0200
Subject: [PATCH] Cleanup of audio_driver_dsp_filter_init - reduce stack usage

---
 Makefile.common      |  2 ++
 audio/audio_driver.c | 15 +++++++++++----
 2 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/Makefile.common b/Makefile.common
index 052646ca65..7b0938a4c0 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -3,6 +3,8 @@ DEPS_DIR          := $(ROOT_DIR)/deps
 LIBRETRO_COMM_DIR := $(ROOT_DIR)/libretro-common
 WANT_WGL           = 0
 
+#CFLAGS += -fstack-usage
+
 ifeq ($(HAVE_GL_CONTEXT),)
    HAVE_GL_CONTEXT=0
 
diff --git a/audio/audio_driver.c b/audio/audio_driver.c
index 307af66111..c6f1990fc8 100644
--- a/audio/audio_driver.c
+++ b/audio/audio_driver.c
@@ -753,12 +753,10 @@ void audio_driver_dsp_filter_free(void)
 
 void audio_driver_dsp_filter_init(const char *device)
 {
-#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
-   char basedir[PATH_MAX_LENGTH];
-   char ext_name[PATH_MAX_LENGTH];
-#endif
    struct string_list *plugs     = NULL;
 #if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
+   char *basedir  = (char*)calloc(PATH_MAX_LENGTH, sizeof(*basedir));
+   char *ext_name = (char*)calloc(PATH_MAX_LENGTH, sizeof(*ext_name));
    fill_pathname_basedir(basedir, device, sizeof(basedir));
 
    if (!frontend_driver_get_core_extension(ext_name, sizeof(ext_name)))
@@ -773,9 +771,18 @@ void audio_driver_dsp_filter_init(const char *device)
    if (!audio_driver_dsp)
       goto error;
 
+#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
+   free(basedir);
+   free(ext_name);
+#endif
+
    return;
 
 error:
+#if defined(HAVE_DYLIB) && !defined(HAVE_FILTERS_BUILTIN)
+   free(basedir);
+   free(ext_name);
+#endif
    if (!audio_driver_dsp)
       RARCH_ERR("[DSP]: Failed to initialize DSP filter \"%s\".\n", device);
 }