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Re: c/9266: decrement pointer side effects are not working properly
- From: bangerth at dealii dot org
- To: gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, randy at fieldshome dot com
- Date: 10 Jan 2003 21:28:15 -0000
- Subject: Re: c/9266: decrement pointer side effects are not working properly
- Reply-to: bangerth at dealii dot org, gcc-bugs at gcc dot gnu dot org, gcc-prs at gcc dot gnu dot org, nobody at gcc dot gnu dot org, randy at fieldshome dot com, gcc-gnats at gcc dot gnu dot org
Synopsis: decrement pointer side effects are not working properly
State-Changed-From-To: open->closed
State-Changed-By: bangerth
State-Changed-When: Fri Jan 10 13:28:13 2003
State-Changed-Why:
You're changing the same variable twice in the same statement,
and the result depends on the order in which this happens.
This invokes undefined behavior -- don't do this.
W.
http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9266