diff --git a/include/ChangeLog b/include/ChangeLog
index cd2b1a7df..7e242a2da 100644
--- a/include/ChangeLog
+++ b/include/ChangeLog
@@ -1,3 +1,8 @@
+2010-01-05  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
+
+	PR bootstrap/41771
+	* ansidecl.h: Fix inline test for C99 and Sun Studio cc.
+
 2009-12-29  Joel Brobecker  <brobecker@adacore.com>
 
 	* dwarf2.h (enum dwarf_attribute): Add DW_AT_GNAT_descriptive_type.
diff --git a/include/ansidecl.h b/include/ansidecl.h
index 86b094474..8b7664742 100644
--- a/include/ansidecl.h
+++ b/include/ansidecl.h
@@ -1,6 +1,6 @@
 /* ANSI and traditional C compatability macros
    Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001,
-   2002, 2003, 2004, 2005, 2006, 2007, 2009
+   2002, 2003, 2004, 2005, 2006, 2007, 2009, 2010
    Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -178,7 +178,7 @@ So instead we use the macro below and test it against specific values.  */
 /* inline requires special treatment; it's in C99, and GCC >=2.7 supports
    it too, but it's not in C89.  */
 #undef inline
-#if __STDC_VERSION__ > 199901L || defined(__cplusplus)
+#if __STDC_VERSION__ >= 199901L || defined(__cplusplus) || (defined(__SUNPRO_C) && defined(__C99FEATURES__))
 /* it's a keyword */
 #else
 # if GCC_VERSION >= 2007