--- a/im/app/nsMain.cpp
+++ b/im/app/nsMain.cpp
@@ -228,19 +228,19 @@ static int do_main(int argc, char* argv[
   if (getenv("LIBFUZZER"))
     gBootstrap->XRE_LibFuzzerSetDriver(fuzzer::FuzzerDriver);
 #endif
 
   return gBootstrap->XRE_main(argc, argv, config);
 }
 
 static nsresult
-InitXPCOMGlue(const char *argv0)
+InitXPCOMGlue()
 {
-  UniqueFreePtr<char> exePath = BinaryPath::Get(argv0);
+  UniqueFreePtr<char> exePath = BinaryPath::Get();
   if (!exePath) {
     Output("Couldn't find the application directory.\n");
     return NS_ERROR_FAILURE;
   }
 
   gBootstrap = mozilla::GetBootstrap(exePath.get());
   if (!gBootstrap) {
     Output("Couldn't load XPCOM.\n");
@@ -268,17 +268,17 @@ int main(int argc, char* argv[], char* e
     // We need to initialize the sandbox TargetServices before InitXPCOMGlue
     // because we might need the sandbox broker to give access to some files.
     if (IsSandboxedProcess() && !sandboxing::GetInitializedTargetServices()) {
       Output("Failed to initialize the sandbox target services.");
       return 255;
     }
 #endif
 
-    nsresult rv = InitXPCOMGlue(argv[0]);
+    nsresult rv = InitXPCOMGlue();
     if (NS_FAILED(rv)) {
       return 255;
     }
 
     int result = content_process_main(gBootstrap.get(), argc, argv);
 
     // InitXPCOMGlue calls NS_LogInit, so we need to balance it here.
     gBootstrap->NS_LogTerm();
@@ -287,17 +287,17 @@ int main(int argc, char* argv[], char* e
   }
 #endif
 
 #ifdef HAS_DLL_BLOCKLIST
   DllBlocklist_Initialize();
 #endif
 
 
-  nsresult rv = InitXPCOMGlue(argv[0]);
+  nsresult rv = InitXPCOMGlue();
   if (NS_FAILED(rv)) {
     return 255;
   }
 
   gBootstrap->XRE_StartupTimelineRecord(mozilla::StartupTimeline::START, start);
 
 #ifdef MOZ_BROWSER_CAN_BE_CONTENTPROC
   gBootstrap->XRE_EnableSameExecutableForContentProc();

--- a/mail/app/nsMailApp.cpp
+++ b/mail/app/nsMailApp.cpp
@@ -228,19 +228,19 @@ static int do_main(int argc, char* argv[
   if (getenv("LIBFUZZER"))
     gBootstrap->XRE_LibFuzzerSetDriver(fuzzer::FuzzerDriver);
 #endif
 
   return gBootstrap->XRE_main(argc, argv, config);
 }
 
 static nsresult
-InitXPCOMGlue(const char *argv0)
+InitXPCOMGlue()
 {
-  UniqueFreePtr<char> exePath = BinaryPath::Get(argv0);
+  UniqueFreePtr<char> exePath = BinaryPath::Get();
   if (!exePath) {
     Output("Couldn't find the application directory.\n");
     return NS_ERROR_FAILURE;
   }
 
   gBootstrap = mozilla::GetBootstrap(exePath.get());
   if (!gBootstrap) {
     Output("Couldn't load XPCOM.\n");
@@ -268,17 +268,17 @@ int main(int argc, char* argv[], char* e
     // We need to initialize the sandbox TargetServices before InitXPCOMGlue
     // because we might need the sandbox broker to give access to some files.
     if (IsSandboxedProcess() && !sandboxing::GetInitializedTargetServices()) {
       Output("Failed to initialize the sandbox target services.");
       return 255;
     }
 #endif
 
-    nsresult rv = InitXPCOMGlue(argv[0]);
+    nsresult rv = InitXPCOMGlue();
     if (NS_FAILED(rv)) {
       return 255;
     }
 
     int result = content_process_main(gBootstrap.get(), argc, argv);
 
     // InitXPCOMGlue calls NS_LogInit, so we need to balance it here.
     gBootstrap->NS_LogTerm();
@@ -287,17 +287,17 @@ int main(int argc, char* argv[], char* e
   }
 #endif
 
 #ifdef HAS_DLL_BLOCKLIST
   DllBlocklist_Initialize();
 #endif
 
 
-  nsresult rv = InitXPCOMGlue(argv[0]);
+  nsresult rv = InitXPCOMGlue();
   if (NS_FAILED(rv)) {
     return 255;
   }
 
   gBootstrap->XRE_StartupTimelineRecord(mozilla::StartupTimeline::START, start);
 
 #ifdef MOZ_BROWSER_CAN_BE_CONTENTPROC
   gBootstrap->XRE_EnableSameExecutableForContentProc();

--- a/suite/app/nsSuiteApp.cpp
+++ b/suite/app/nsSuiteApp.cpp
@@ -228,19 +228,19 @@ static int do_main(int argc, char* argv[
   if (getenv("LIBFUZZER"))
     gBootstrap->XRE_LibFuzzerSetDriver(fuzzer::FuzzerDriver);
 #endif
 
   return gBootstrap->XRE_main(argc, argv, config);
 }
 
 static nsresult
-InitXPCOMGlue(const char *argv0)
+InitXPCOMGlue()
 {
-  UniqueFreePtr<char> exePath = BinaryPath::Get(argv0);
+  UniqueFreePtr<char> exePath = BinaryPath::Get();
   if (!exePath) {
     Output("Couldn't find the application directory.\n");
     return NS_ERROR_FAILURE;
   }
 
   gBootstrap = mozilla::GetBootstrap(exePath.get());
   if (!gBootstrap) {
     Output("Couldn't load XPCOM.\n");
@@ -268,17 +268,17 @@ int main(int argc, char* argv[], char* e
     // We need to initialize the sandbox TargetServices before InitXPCOMGlue
     // because we might need the sandbox broker to give access to some files.
     if (IsSandboxedProcess() && !sandboxing::GetInitializedTargetServices()) {
       Output("Failed to initialize the sandbox target services.");
       return 255;
     }
 #endif
 
-    nsresult rv = InitXPCOMGlue(argv[0]);
+    nsresult rv = InitXPCOMGlue();
     if (NS_FAILED(rv)) {
       return 255;
     }
 
     int result = content_process_main(gBootstrap.get(), argc, argv);
 
     // InitXPCOMGlue calls NS_LogInit, so we need to balance it here.
     gBootstrap->NS_LogTerm();
@@ -287,17 +287,17 @@ int main(int argc, char* argv[], char* e
   }
 #endif
 
 #ifdef HAS_DLL_BLOCKLIST
   DllBlocklist_Initialize();
 #endif
 
 
-  nsresult rv = InitXPCOMGlue(argv[0]);
+  nsresult rv = InitXPCOMGlue();
   if (NS_FAILED(rv)) {
     return 255;
   }
 
   gBootstrap->XRE_StartupTimelineRecord(mozilla::StartupTimeline::START, start);
 
 #ifdef MOZ_BROWSER_CAN_BE_CONTENTPROC
   gBootstrap->XRE_EnableSameExecutableForContentProc();