Fix Tru64 problem with stdbool.h.

* lib/stdbool.in.h (false, true):
[! (defined __cplusplus || defined __BEOS__) && !defined __GNUC__]:
Don't declare as an enum in this situation; it runs afoul of Tru64.
Problem reported by Steven M. Schweda in
<http://lists.gnu.org/archive/html/bug-autoconf/2007-10/msg00019.html>.

diff --git a/ChangeLog b/ChangeLog
index 1f17dbd091f365cae17c18bab8a5e507ff3fcbe5..92ea8cbc44812f1b7a78bf6f4eac11c3fbde86d2 100644 (file)
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,12 @@
+2007-10-22  Paul Eggert  <eggert@cs.ucla.edu>
+
+       Fix Tru64 problem with stdbool.h.
+       * lib/stdbool.in.h (false, true):
+       [! (defined __cplusplus || defined __BEOS__) && !defined __GNUC__]:
+       Don't declare as an enum in this situation; it runs afoul of Tru64.
+       Problem reported by Steven M. Schweda in
+       <http://lists.gnu.org/archive/html/bug-autoconf/2007-10/msg00019.html>.
+
 2007-10-22  Eric Blake  <ebb9@byu.net>
 
        Also wrap vf?printf.

diff --git a/lib/stdbool.in.h b/lib/stdbool.in.h
index 150a0102e1de452e33a65da2f3771d202e7f010b..2784a502bf49748383e89c47637f2bc2ce87b613 100644 (file)
--- a/lib/stdbool.in.h
+++ b/lib/stdbool.in.h
@@ -97,10 +97,11 @@ typedef bool _Bool;
           "warning: _Bool is a keyword in ISO C99".
         Use of an enum type, with IRIX cc, leads to a stupid
           "warning(1185): enumerated type mixed with another type".
-        The only benefit of the enum type, debuggability, is not important
-        with these compilers.  So use 'signed char' and no typedef.  */
+        Even the existence of an enum type, without a typedef,
+          "Invalid enumerator. (badenum)" with HP-UX cc on Tru64.
+        The only benefit of the enum, debuggability, is not important
+        with these compilers.  So use 'signed char' and no enum.  */
 #  define _Bool signed char
-enum { false = 0, true = 1 };
 # else
    /* With this compiler, trust the _Bool type if the compiler has it.  */
 #  if !@HAVE__BOOL@