[AC21.5] Document that asserts expand to empty statements

APPROVE COMMIT 21.5 Thanks to Adrian Aichner for diagnosing one of these. Index: man/ChangeLog =================================================================== RCS file: /pack/xemacscvs/XEmacs/xemacs/man/ChangeLog,v retrieving revision 1.293 diff -u -U0 -r1.293 ChangeLog --- man/ChangeLog 11 Mar 2005 19:22:19 -0000 1.293 +++ man/ChangeLog 14 Mar 2005 03:01:32 -0000 ＠＠ -0,0 +1,5 ＠＠ +2005-03-14 Stephen J. Turnbull <stephen(a)xemacs.org&gt; + + * internals/internals.texi (How Lisp Objects Are Represented in C): + Document compiler warnings when assert expands to empty statement. + Index: man/internals/internals.texi =================================================================== RCS file: /pack/xemacscvs/XEmacs/xemacs/man/internals/internals.texi,v retrieving revision 1.62 diff -u -r1.62 internals.texi --- man/internals/internals.texi 10 Mar 2005 11:44:22 -0000 1.62 +++ man/internals/internals.texi 14 Mar 2005 03:01:43 -0000 ＠＠ -7318,6 +7318,10 ＠＠ nothing unless the corresponding configure error checking flag was specified. +Note that in some cases ＠samp{assert}s will expand to nothing in a +context where that produces an empty statement. Some compilers will +warn about this. + ＠node Allocation of Objects in XEmacs Lisp, The Lisp Reader and Compiler, How Lisp Objects Are Represented in C, Top ＠chapter Allocation of Objects in XEmacs Lisp ＠cindex allocation of objects in XEmacs Lisp -- Institute of Policy and Planning Sciences http://turnbull.sk.tsukuba.ac.jp University of Tsukuba Tennodai 1-1-1 Tsukuba 305-8573 JAPAN Ask not how you can "do" free software business; ask what your business can "do for" free software.