From 7a10276e59a05f4176464e0fbadc3f743c8ed244 Mon Sep 17 00:00:00 2001
From: Jim Meyering <address@hidden>
Date: Mon, 5 Sep 2016 21:40:57 -0700
Subject: [PATCH] getprogname.h: declare with _GL_ATTRIBUTE_PURE, when required

* lib/getprogname.h (getprogname) [HAVE_DECL_PROGRAM_INVOCATION_NAME]:
Declare with _GL_ATTRIBUTE_PURE, to avoid warning from gcc's
-Wsuggest-attribute=pure
---
 lib/getprogname.h | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/getprogname.h b/lib/getprogname.h
index b21e423..1887261 100644
--- a/lib/getprogname.h
+++ b/lib/getprogname.h
@@ -24,7 +24,11 @@ extern "C" {
 #endif

 #ifndef HAVE_GETPROGNAME
-extern const char *getprogname (void);
+extern const char *getprogname (void)
+# ifdef HAVE_DECL_PROGRAM_INVOCATION_NAME
+  _GL_ATTRIBUTE_PURE
+# endif
+  ;
 #endif

 #ifdef __cplusplus
-- 
2.8.0-rc2