From ac32382b81b02d6c39f90550db7f573a9c3db9c4 Mon Sep 17 00:00:00 2001
From: Joel Rosdahl <joel@rosdahl.net>
Date: Mon, 15 Sep 2025 21:30:22 +0200
Subject: [PATCH] chore: Handle empty argv in
 format_argv_as_win32_command_string

---
 src/ccache/util/string.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/ccache/util/string.cpp b/src/ccache/util/string.cpp
index b213cacd..1ff7c5ed 100644
--- a/src/ccache/util/string.cpp
+++ b/src/ccache/util/string.cpp
@@ -61,6 +61,10 @@ std::string
 format_argv_as_win32_command_string(const char* const* argv,
                                     bool escape_backslashes)
 {
+  if (!argv || !argv[0]) {
+    return {};
+  }
+
   std::string result;
   if (getenv("_CCACHE_TEST") && argv[0] && util::ends_with(argv[0], ".sh")) {
     result += "sh.exe ";
-- 
2.47.3