From e2041de9690f4257c2b2b01a4cf9704a6da23068 Mon Sep 17 00:00:00 2001
From: CedricMocquillon <cedric.mocquillon@sage.com>
Date: Sat, 12 Dec 2020 21:47:50 +0100
Subject: [PATCH] Use the incremental approach to handle long path

---
 components/crashcatcher/windows_crashcatcher.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/components/crashcatcher/windows_crashcatcher.cpp b/components/crashcatcher/windows_crashcatcher.cpp
index 3291631c10..129907fc3b 100644
--- a/components/crashcatcher/windows_crashcatcher.cpp
+++ b/components/crashcatcher/windows_crashcatcher.cpp
@@ -126,8 +126,13 @@ namespace Crash
 
     void CrashCatcher::startMonitorProcess(const std::string& crashLogPath)
     {
-        WCHAR executablePath[MAX_PATH + 1];
-        GetModuleFileNameW(NULL, executablePath, MAX_PATH + 1);
+        std::wstring executablePath;
+        DWORD copied = 0;
+        do {
+            executablePath.resize(executablePath.size() + MAX_PATH);
+            copied = GetModuleFileNameW(nullptr, &executablePath[0], executablePath.size());
+        } while (copied >= executablePath.size());
+        executablePath.resize(copied);
 
         memset(mShm->mStartup.mLogFilePath, 0, sizeof(mShm->mStartup.mLogFilePath));
         int length = crashLogPath.length();
@@ -152,7 +157,7 @@ namespace Crash
         PROCESS_INFORMATION pi;
         ZeroMemory(&pi, sizeof(pi));
 
-        if (!CreateProcessW(executablePath, &argumetns[0], NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi))
+        if (!CreateProcessW(&executablePath[0], &argumetns[0], NULL, NULL, TRUE, 0, NULL, NULL, &si, &pi))
             throw std::runtime_error("Could not start crash monitor process");
 
         waitMonitor();