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From: reza_agha@yahoo.com To: gcc-gnats@gcc.gnu.org Subject: c/9544: buggy prolog code generation for functions, make room for local vars Date: Mon, 03 Feb 2003 13:46:00 -0000 [thread overview] Message-ID: <20030203134356.21884.qmail@sources.redhat.com> (raw) >Number: 9544 >Category: c >Synopsis: buggy prolog code generation for functions, make room for local vars >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: wrong-code >Submitter-Id: net >Arrival-Date: Mon Feb 03 13:46:01 UTC 2003 >Closed-Date: >Last-Modified: >Originator: Reza A. Naini >Release: 2.95.2 19991024 (release) AVR version >Organization: >Environment: Win2K >Description: the prolog code of function when want to make room for local variables, is buggy. void aFunction(void) { char localVars[100]; } is translated to: in r0,SREG cli <---- preperation code for local variables sei <---- BUG! the I (interrupt) flag is set at beginning of this function. >How-To-Repeat: char global[100]; void aFunction(void) { char local[100]; int i; for(i=0; i<100; i++) global[i] = local[i]; } >Fix: prolog code must be: in r0,SREG cli ....... out SREG,r0 <---- Fix! >Release-Note: >Audit-Trail: >Unformatted:
next reply other threads:[~2003-02-03 13:46 UTC|newest] Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top 2003-02-03 13:46 reza_agha [this message] 2003-02-03 16:44 bangerth 2003-05-10 7:51 giovannibajo
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