changeset 6597:9760557db4e2

Fix a bug occurring with HP-UX aCC compiler.
author Bruno Haible <bruno@clisp.org>
date Tue, 24 Jan 2006 22:00:13 +0000
parents 043388377196
children 717623bb6fd8
files lib/ChangeLog lib/stdbool_.h
diffstat 2 files changed, 13 insertions(+), 3 deletions(-) [+]
line wrap: on
line diff
--- a/lib/ChangeLog
+++ b/lib/ChangeLog
@@ -1,5 +1,10 @@
 2006-01-24  Bruno Haible  <bruno@clisp.org>
 
+	* stdbool_.h (_Bool) [__cplusplus]: Don't define if the compiler already
+	has it.
+	Report and patch by Albert Chin-A-Young  <china@thewrittenword.com> on
+	2005-11-26.
+
 	* stdbool_.h (_Bool) [HP-UX cc, AIX cc,xlc] : Define as 'signed char'
 	to avoid problems with the built-in _Bool type.
 	Reported by Paul Eggert on 2005-11-26.
--- a/lib/stdbool_.h
+++ b/lib/stdbool_.h
@@ -70,7 +70,14 @@
    (see ISO C 99 6.7.2.2.(4)); however, '_Bool' must promote to 'int'
    (see ISO C 99 6.3.1.1.(2)).  So we add a negative value to the
    enum; this ensures that '_Bool' promotes to 'int'.  */
-#if !(defined __cplusplus || defined __BEOS__)
+#if defined __cplusplus || defined __BEOS__
+  /* A compiler known to have 'bool'.  */
+  /* If the compiler already has both 'bool' and '_Bool', we can assume they
+     are the same types.  */
+# if !@HAVE__BOOL@
+typedef bool _Bool;
+# endif
+#else
 # if @HAVE__BOOL@
 #  if defined __HP_cc || defined __xlc__
     /* Some HP-UX cc and AIX IBM C compiler versions have compiler bugs when
@@ -91,8 +98,6 @@
 typedef enum { _Bool_must_promote_to_int = -1, false = 0, true = 1 } _Bool;
 #  endif
 # endif
-#else
-typedef bool _Bool;
 #endif
 #define bool _Bool