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-rw-r--r--lib/stdlib.in.h16
1 files changed, 13 insertions, 3 deletions
diff --git a/lib/stdlib.in.h b/lib/stdlib.in.h
index c90626a2b..72c9dd1ca 100644
--- a/lib/stdlib.in.h
+++ b/lib/stdlib.in.h
@@ -87,13 +87,21 @@ struct random_data
#endif
#if (@GNULIB_MKSTEMP@ || @GNULIB_MKSTEMPS@ || @GNULIB_GETSUBOPT@ || defined GNULIB_POSIXCHECK) && ! defined __GLIBC__ && !((defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__)
-/* On MacOS X 10.3, only <unistd.h> declares mkstemp. */
-/* On MacOS X 10.5, only <unistd.h> declares mkstemps. */
+/* On Mac OS X 10.3, only <unistd.h> declares mkstemp. */
+/* On Mac OS X 10.5, only <unistd.h> declares mkstemps. */
/* On Cygwin 1.7.1, only <unistd.h> declares getsubopt. */
/* But avoid namespace pollution on glibc systems and native Windows. */
# include <unistd.h>
#endif
+/* The __attribute__ feature is available in gcc versions 2.5 and later.
+ The attribute __pure__ was added in gcc 2.96. */
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 96)
+# define _GL_ATTRIBUTE_PURE __attribute__ ((__pure__))
+#else
+# define _GL_ATTRIBUTE_PURE /* empty */
+#endif
+
/* The definition of _Noreturn is copied here. */
/* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
@@ -138,7 +146,9 @@ _GL_WARN_ON_USE (_Exit, "_Exit is unportable - "
/* Parse a signed decimal integer.
Returns the value of the integer. Errors are not detected. */
# if !@HAVE_ATOLL@
-_GL_FUNCDECL_SYS (atoll, long long, (const char *string) _GL_ARG_NONNULL ((1)));
+_GL_FUNCDECL_SYS (atoll, long long, (const char *string)
+ _GL_ATTRIBUTE_PURE
+ _GL_ARG_NONNULL ((1)));
# endif
_GL_CXXALIAS_SYS (atoll, long long, (const char *string));
_GL_CXXALIASWARN (atoll);