autoconf: detect the broken bool in OpenWatcom 1.8

OpenWatcom 1.8 has a C99 mode, which implements _Bool and
<stdbool.h>.  Unfortunately the implementation is broken, and doesn't
let _Bool be implicitly converted to integer (as required by the C99
spec).  Detect this case in autoconf.

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler.h b/compiler.h
index 5e7e8c4..2c4cc9d 100644
--- a/compiler.h
+++ b/compiler.h
@@ -78,7 +78,7 @@ int vsnprintf(char *, size_t, const char *, va_list);
 #endif
 
 #ifndef __cplusplus		/* C++ has false, true, bool as keywords */
-# ifdef HAVE_STDBOOL_H
+# if defined(HAVE_STDBOOL_H) && defined(HAVE_WORKING_BOOL)
 #  include <stdbool.h>
 # else
 /* This is sort of dangerous, since casts will behave different than