From 804c61b7c1405f4440327f6f6ebbe9813f67938f Mon Sep 17 00:00:00 2001
From: Carter Li <zhangsongcui@live.cn>
Date: Mon, 17 Jun 2024 13:50:36 +0800
Subject: [PATCH] Platform (Linux): fix invalid call to `realpath(3)`

---
 src/util/platform/FFPlatform_unix.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/src/util/platform/FFPlatform_unix.c b/src/util/platform/FFPlatform_unix.c
index d4d39babb..4ba4d2a5f 100644
--- a/src/util/platform/FFPlatform_unix.c
+++ b/src/util/platform/FFPlatform_unix.c
@@ -35,12 +35,13 @@ static void getExePath(FFPlatform* platform)
         else
             exePathLen--; // remove terminating NUL
     #else
-    int exePathLen = 0;
+        ssize_t exePathLen = readlink("/proc/self/path/a.out", exePath, sizeof(exePath) - 1);
+        exePath[exePathLen] = '\0';
     #endif
     if (exePathLen > 0)
     {
         ffStrbufEnsureFree(&platform->exePath, PATH_MAX);
-        if (realpath(platform->exePath.chars, exePath))
+        if (realpath(exePath, platform->exePath.chars))
             ffStrbufRecalculateLength(&platform->exePath);
         else
             ffStrbufSetNS(&platform->exePath, (uint32_t) exePathLen, exePath);