Improve ChangeLog entry for HAVE_SIGSETMASK to discuss what ANSI specifies

(just for kicks).

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 0eebae4891e633b3b294ac35a931a23d42a5ae69..83e2ad0c337d13970db202ef570a33df3a21463d 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -8,8 +8,11 @@ Tue Jan 25 11:31:53 1994  Jim Kingdon  (kingdon@lioth.cygnus.com)
        the HP compiler in ANSI mode doesn't like.
 
        * main.c: When defaulting HAVE_SIGSETMASK based on USG, just do it
-       based on USG, rather than defining HAVE_SIGSETMASK to an expression
-       containing defined.  This is for the HP compiler in ANSI mode.
+       based on USG, rather than defining HAVE_SIGSETMASK to an
+       expression containing defined.  Having a macro used in #if expand
+       to an expression containing "defined" is undefined according to
+       ANSI, and the HP compiler in ANSI mode doesn't do what we wanted
+       it to.
 
 Mon Jan 24 20:51:29 1994  John Gilmore  (gnu@cygnus.com)