Add a testcase for PR binutils/27202

[binutils-gdb.git] / include / obstack.h

diff --git a/include/obstack.h b/include/obstack.h
index 0ff33098443053aefb98518ca367d1f217f069ec..0d8746f835b1f14401d725fd5c3362af5c46488d 100644 (file)
--- a/include/obstack.h
+++ b/include/obstack.h
@@ -1,5 +1,5 @@
 /* obstack.h - object stack macros
-   Copyright (C) 1988-2015 Free Software Foundation, Inc.
+   Copyright (C) 1988-2021 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -137,12 +137,16 @@
    relative to B.  Otherwise, use the faster strategy of computing the
    alignment relative to 0.  */
 
-#define __PTR_ALIGN(B, P, A)                                                 \
-  __BPTR_ALIGN (sizeof (ptrdiff_t) < sizeof (void *) ? (B) : (char *) 0,      \
-                P, A)
+#define __PTR_ALIGN(B, P, A)                                           \
+  (sizeof (ptrdiff_t) < sizeof (void *) ? __BPTR_ALIGN (B, P, A)       \
+   : (char *) (((ptrdiff_t) (P) + (A)) & ~(A)))
 
 #ifndef __attribute_pure__
-# define __attribute_pure__ _GL_ATTRIBUTE_PURE
+# if defined __GNUC_MINOR__ && __GNUC__ * 1000 + __GNUC_MINOR__ >= 2096
+#  define __attribute_pure__ __attribute__ ((__pure__))
+# else
+#  define __attribute_pure__
+# endif
 #endif
 
 #ifdef __cplusplus