* configure.in: test unsetenv returns a value.

  unsetenv is void in older BSDs (FreeBSD 6 and OpenBSD 4.5 at least).

* hash.c (ruby_setenv): don't use the result of unsetenv if unsetenv
  doesn't return a value.



git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@26427 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 4 insertions, 0 deletions

diff --git a/hash.c b/hash.c
index 124df01385..7a6bfe8134 100644
--- a/hash.c
+++ b/hash.c
@@ -2073,8 +2073,12 @@ ruby_setenv(const char *name, const char *value)
 	if (setenv(name, value, 1))
 	    rb_sys_fail("setenv");
     } else {
+#ifdef VOID_UNSETENV
+	unsetenv(name);
+#else
 	if (unsetenv(name))
 	    rb_sys_fail("unsetenv");
+#endif
     }
 #elif defined __sun__
     size_t len;