From: David Guillen Fandos <david@davidgf.net>
Date: Fri, 30 Jul 2021 18:54:08 +0000 (+0200)
Subject: Fix initialization on Frontends without variable support.
X-Git-Tag: r24l~575^2
X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=abf1a2b64a04b78127062c338ceebf95f627af9c;p=pcsx_rearmed.git

Fix initialization on Frontends without variable support.

Frontends that do not support RETRO_ENVIRONMENT_GET_VARIABLE (like
miniretro & nanoarch) cause a segfault in the CPU emulation path unless
the BIOS file is present. This is due to the emulator not supporting
running without a BIOS in dynarec mode and the code not being able to
swap CPU types (unless the callback returns true).
---

diff --git a/frontend/libretro.c b/frontend/libretro.c
index d0a0da76..59e986e7 100644
--- a/frontend/libretro.c
+++ b/frontend/libretro.c
@@ -1634,7 +1634,9 @@ static void update_variables(bool in_flight)
    var.value = NULL;
    var.key = "pcsx_rearmed_drc";
 
-   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
+   if (!environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var))
+      var.value = "enabled";
+
    {
       R3000Acpu *prev_cpu = psxCpu;
 #if defined(LIGHTREC)