worktree: don't segfault with an absolute pathspec without a work tree

diff --git a/run-command.c b/run-command.c
index f3e7abb7de799a14a8f792195992c4d9d1495c6f..cf2d8f7fae1356e50736cb9d599625df79738a2a 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -75,7 +75,7 @@ int start_command(struct child_process *cmd)
 
        trace_argv_printf(cmd->argv, "trace: run_command:");
 
-#ifndef __MINGW32__
+#ifndef WIN32
        fflush(NULL);
        cmd->pid = fork();
        if (!cmd->pid) {
@@ -134,6 +134,7 @@ int start_command(struct child_process *cmd)
                error("cannot fork() for %s: %s", cmd->argv[0],
                        strerror(failed_errno = errno));
 #else
+{
        int s0 = -1, s1 = -1, s2 = -1;  /* backups of stdin, stdout, stderr */
        const char **sargv = cmd->argv;
        char **env = environ;
@@ -173,11 +174,8 @@ int start_command(struct child_process *cmd)
 
        if (cmd->dir)
                die("chdir in start_command() not implemented");
-       if (cmd->env) {
-               env = copy_environ();
-               for (; *cmd->env; cmd->env++)
-                       env = env_setenv(env, *cmd->env);
-       }
+       if (cmd->env)
+               env = make_augmented_environ(cmd->env);
 
        if (cmd->git_cmd) {
                cmd->argv = prepare_git_cmd(cmd->argv);
@@ -200,6 +198,7 @@ int start_command(struct child_process *cmd)
                dup2(s1, 1), close(s1);
        if (s2 >= 0)
                dup2(s2, 2), close(s2);
+}
 #endif
 
        if (cmd->pid < 0) {
@@ -316,8 +315,8 @@ int run_command_v_opt_cd_env(const char **argv, int opt, const char *dir, const
        return run_command(&cmd);
 }
 
-#ifdef __MINGW32__
-static __stdcall unsigned run_thread(void *data)
+#ifdef WIN32
+static unsigned __stdcall run_thread(void *data)
 {
        struct async *async = data;
        return async->proc(async->fd_for_proc, async->data);
@@ -332,7 +331,7 @@ int start_async(struct async *async)
                return error("cannot create pipe: %s", strerror(errno));
        async->out = pipe_out[0];
 
-#ifndef __MINGW32__
+#ifndef WIN32
        /* Flush stdio before fork() to avoid cloning buffers */
        fflush(NULL);
 
@@ -361,7 +360,7 @@ int start_async(struct async *async)
 
 int finish_async(struct async *async)
 {
-#ifndef __MINGW32__
+#ifndef WIN32
        int ret = wait_or_whine(async->pid, "child process", 0);
 #else
        DWORD ret = 0;