From ce9a69b661d688888800aa9ffa25c4d6c49d0e25 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Fri, 20 May 2016 15:36:34 +0000
Subject: fix build on no-fork-spawnv platforms

* process.c (rb_execarg_commandline): build command line string
  from argument vector in rb_execarg.
  [ruby-core:75611] [Bug #12398]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@55091 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 process.c | 33 +++++++++++++++++++++++++++------
 1 file changed, 27 insertions(+), 6 deletions(-)

(limited to 'process.c')

diff --git a/process.c b/process.c
index 1147205ebd..ae627ea5a0 100644
--- a/process.c
+++ b/process.c
@@ -3902,6 +3902,29 @@ rb_syswait(rb_pid_t pid)
     rb_waitpid(pid, &status, 0);
 }
 
+#if !defined HAVE_WORKING_FORK && !defined HAVE_SPAWNV
+char *
+rb_execarg_commandline(const struct rb_execarg *eargp, VALUE *prog)
+{
+    VALUE cmd = *prog;
+    if (eargp && !eargp->use_shell) {
+	VALUE str = eargp->invoke.cmd.argv_str;
+	VALUE buf = eargp->invoke.cmd.argv_buf;
+	char *p, **argv = ARGVSTR2ARGV(str);
+	long i, argc = ARGVSTR2ARGC(str);
+	const char *start = RSTRING_PTR(buf);
+	cmd = rb_str_new(start, RSTRING_LEN(buf));
+	p = RSTRING_PTR(cmd);
+	for (i = 1; i < argc; ++i) {
+	    p[argv[i] - start - 1] = ' ';
+	}
+	*prog = cmd;
+	return p;
+    }
+    return StringValueCStr(*prog);
+}
+#endif
+
 static rb_pid_t
 rb_spawn_process(struct rb_execarg *eargp, char *errmsg, size_t errmsg_buflen)
 {
@@ -3909,6 +3932,9 @@ rb_spawn_process(struct rb_execarg *eargp, char *errmsg, size_t errmsg_buflen)
 #if !defined HAVE_WORKING_FORK || USE_SPAWNV
     VALUE prog;
     struct rb_execarg sarg;
+# if !defined HAVE_SPAWNV
+    int status;
+# endif
 #endif
 
 #if defined HAVE_WORKING_FORK && !USE_SPAWNV
@@ -3935,12 +3961,7 @@ rb_spawn_process(struct rb_execarg *eargp, char *errmsg, size_t errmsg_buflen)
     if (pid == -1)
 	rb_last_status_set(0x7f << 8, 0);
 # else
-    if (!eargp->use_shell) {
-        char **argv = ARGVSTR2ARGV(eargp->invoke.cmd.argv_str);
-        int argc = ARGVSTR2ARGC(eargp->invoke.cmd.argv_str);
-        prog = rb_ary_join(rb_ary_new4(argc, argv), rb_str_new2(" "));
-    }
-    status = system(StringValuePtr(prog));
+    status = system(rb_execarg_commandline(eargp, &prog));
     rb_last_status_set((status & 0xff) << 8, 0);
     pid = 1;			/* dummy */
 # endif
-- 
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