Article View: comp.std.c
Article #58Re: on "use", and the lvalue-ness of string literals
From: Clive Feather
Date: Tue, 03 Nov 1992 07:47
Date: Tue, 03 Nov 1992 07:47
25 lines
1332 bytes
1332 bytes
In article <1992Nov2.162310.10094@ichips.intel.com> bhoughto@sedona.intel.com (Blair P. Houghton) writes: > `if ( foo ) /* empty */;' does not > have any side effects, but definitely does use the value > of `foo'. | An actual implementation need not evaluate part of an expression if it | can deduce that its value is not used and that no needed side effects | are produced (including any caused by calling a function or accessing a | volatile object). [ISO C 5.1.2.3] > "A string literal is a primary expression. > It is an lvalue..." > > It's an LVALUE. This means that, > "foo" = "bar"; > is legal. Right? Wrong. It's not a *modifiable* lvalue. -- Clive D.W. Feather | IXI Limited | If you lie to the compiler, clive@x.co.uk | Vision Park | it will get its revenge. Phone: +44 223 236 555 | Cambridge CB4 4RZ | - Henry Spencer Fax: +44 223 236 550 | United Kingdom |
Technical Details
Message-ID:
<1992Nov03.074747.16658@x.co.uk>Path:
arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!agate!doc.ic.ac.uk!uknet!acorn!ixi!cliveReferences:
<1992Nov2.162310.10094@ichips.intel.com>Show Full Headers
Complete Article Headers
Path: arc1-ca.pugleaf.net!sparky!uunet!olivea!spool.mu.edu!agate!doc.ic.ac.uk!uknet!acorn!ixi!clive From: clive@x.co.uk (Clive Feather) Newsgroups: comp.std.c Subject: Re: on "use", and the lvalue-ness of string literals Message-ID: <1992Nov03.074747.16658@x.co.uk> Date: 3 Nov 92 07:47:47 GMT References: <1992Nov2.162310.10094@ichips.intel.com> Organization: IXI Limited, Cambridge, UK Lines: 25