On Solaris/x86, with SunPRO C 5.9, the test-func test fails. The reason
is that
sizeof __func__
evaluates to 0. The compiler warns about it:
"test-func.c", line 40: warning: null dimension: sizeof()
What to do? m4/func.m4 could defined __func__ to a dummy. But that's too
much damage IMO. Better make clear that sizeof __func__ cannot be used
portably.
Simon, what do you think?
2009-08-27 Bruno Haible <br...@clisp.org>
* tests/test-func.c (main): Don't verify sizeof __func__ on SunPRO C
compilers.
* doc/func.texi: Document the SunPRO C bug.
--- doc/func.texi.orig 2009-08-27 09:53:14.000000000 +0200
+++ doc/func.texi 2009-08-27 09:53:03.000000000 +0200
@@ -15,3 +15,6 @@
printf ("%s: hello world\n", __func__);
@}
@end smallexample
+
+Note that @code{sizeof} cannot be applied to @code{__func__}: On SunPRO C
+compiler, @code{sizeof __func__} evaluates to 0.
--- tests/test-func.c.orig 2009-08-27 09:46:28.000000000 +0200
+++ tests/test-func.c 2009-08-27 09:32:57.000000000 +0200
@@ -1,5 +1,5 @@
/* Test whether __func__ is available
- Copyright (C) 2008 Free Software Foundation, Inc.
+ Copyright (C) 2008-2009 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
@@ -37,6 +37,13 @@
int
main ()
{
+ ASSERT (strlen (__func__) > 0);
+
+ /* On SunPRO C 5.9, sizeof __func__ evaluates to 0. The compiler warns:
+ "warning: null dimension: sizeof()". */
+#if !defined __SUNPRO_C
ASSERT (strlen (__func__) + 1 == sizeof __func__);
+#endif
+
return 0;
}
