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From: amodra@bigpond.net.au To: gcc-gnats@gcc.gnu.org Subject: optimization/6233: simple loop miscompilation Date: Mon, 08 Apr 2002 21:36:00 -0000 [thread overview] Message-ID: <20020409042706.21456.qmail@bubble.local> (raw) >Number: 6233 >Category: optimization >Synopsis: simple loop miscompilation >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: wrong-code >Submitter-Id: net >Arrival-Date: Mon Apr 08 21:36:01 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Alan Modra >Release: 3.2 20020408 (experimental) >Organization: IBM >Environment: configured with: /src/gcc-current/configure --prefix=/usr/local --build=i686-linux --host=i686-linux --target=i686-linux --disable-nls --enable-shared --enable-languages=c,c++ >Description: function call incorrectly moved out of loop at -O2. >How-To-Repeat: testcase distilled from binutils sources extern char *p; static int is_end_of_statement () { return *p == '\n' || *p == ';' || *p == '!'; } void foo (void) { while (!is_end_of_statement ()) p++; } >Fix: >Release-Note: >Audit-Trail: >Unformatted:
next reply other threads:[~2002-04-09 4:36 UTC|newest] Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-04-08 21:36 amodra [this message] 2002-04-09 4:36 Alan Modra 2002-04-09 6:46 Alan Modra 2002-04-09 9:46 Richard Henderson 2002-04-09 17:06 Alan Modra 2002-04-09 17:46 Richard Henderson 2002-04-09 18:06 Alan Modra 2002-04-09 19:06 Richard Henderson
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