From a05e78f5318325e7d2f01bf4b8a0f11b8cf71371 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Sun, 18 Apr 2021 15:49:45 +0200
Subject: [PATCH] Linux: use more robust pid parsing

Also add comment to condition
---
 linux/LinuxProcessList.c | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/linux/LinuxProcessList.c b/linux/LinuxProcessList.c
index 4564f8e6..f5a35193 100644
--- a/linux/LinuxProcessList.c
+++ b/linux/LinuxProcessList.c
@@ -1292,11 +1292,16 @@ static bool LinuxProcessList_recurseProcTree(LinuxProcessList* this, openat_arg_
       }
 
       // filename is a number: process directory
-      int pid = atoi(name);
-
-      if (pid <= 0)
-         continue;
+      int pid;
+      {
+         char* endptr;
+         unsigned long parsedPid = strtoul(name, &endptr, 10);
+         if (parsedPid == 0 || parsedPid == ULONG_MAX || *endptr != '\0')
+            continue;
+         pid = parsedPid;
+      }
 
+      // Skip task directory of main thread
       if (parent && pid == parent->pid)
          continue;