From 488b8e8ed01018c155812e5cfb06162a5e216c7a Mon Sep 17 00:00:00 2001 From: Kai Koehne Date: Mon, 19 Feb 2018 15:57:36 +0100 Subject: Separate argv for QCoreApplication and Chromium in WebEngineProcess On Linux, Chromium manipulates argv, merging all command line arguments into argv[0] and deleting the other arguments - see set_process_title_linux.cc for the glory details. This potentially confuses QCoreApplication::applicationDirPath(), which assumes that argv[0] contains the binary path. This in turn caused a regression in Qt 5.9.4 where resource files could not be located anymore for QtWebEngineProcess. Avoid this by making two distinct copies of argv already in main(). Task-number: QTBUG-66346 Change-Id: I24d103bb15e77db69faae3bcfc736df25e4ec5d3 Reviewed-by: Michal Klocek --- src/process/main.cpp | 28 +++++++++++++++++++++++++--- 1 file changed, 25 insertions(+), 3 deletions(-) (limited to 'src/process') diff --git a/src/process/main.cpp b/src/process/main.cpp index d2f9d2337..3b4ce9837 100644 --- a/src/process/main.cpp +++ b/src/process/main.cpp @@ -41,6 +41,7 @@ #include #include +#include #if defined(Q_OS_LINUX) @@ -97,9 +98,30 @@ int main(int argc, const char **argv) initDpiAwareness(); #endif - // QCoreApplication needs a non-const pointer, while the - // ContentMain in Chromium needs the pointer to be const. - QCoreApplication qtApplication(argc, const_cast(argv)); + // Chromium on Linux manipulates argv to set a process title + // (see set_process_title_linux.cc). + // This can interfere with QCoreApplication::applicationFilePath, + // which assumes that argv[0] only contains the executable path. + // + // Avoid this by making a deep copy of argv and pass this + // to QCoreApplication. Use a unique_ptr with custom deleter to + // clean up on exit. + + auto dt = [](char* av[]) { + for (char **a = av; *a; a++) + delete[] *a; + delete[] av; + }; + + std::unique_ptr argv_(new char*[argc+1], dt); + for (int i = 0; i < argc; ++i) { + size_t len = strlen(argv[i]) + 1; + argv_[i] = new char[len]; + strcpy(argv_[i], argv[i]); + } + argv_[argc] = 0; + + QCoreApplication qtApplication(argc, argv_.get()); return QtWebEngine::processMain(argc, argv); } -- cgit v1.2.3