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From: geert.deprins@advalvas.be To: gcc-gnats@gcc.gnu.org Cc: geert.deprins@utimaco.be Subject: optimization/7351: Postincrment optimisation problem Date: Thu, 18 Jul 2002 10:56:00 -0000 [thread overview] Message-ID: <20020718175045.31525.qmail@sources.redhat.com> (raw) >Number: 7351 >Category: optimization >Synopsis: Postincrment optimisation problem >Confidential: no >Severity: serious >Priority: medium >Responsible: unassigned >State: open >Class: sw-bug >Submitter-Id: net >Arrival-Date: Thu Jul 18 10:56:00 PDT 2002 >Closed-Date: >Last-Modified: >Originator: Geert De Prins >Release: 3.0.3 >Organization: >Environment: Solaris 2.7 >Description: Optimiser with -O2 level on seems to increment the pointer used in the source operand to early. Sample code below (with -O2 the first character is missing): #include <stdio.h> void main() { char szBuffer[256]; char *p_cTag = szBuffer; strcpy(szBuffer,"Testtekst"); while(*p_cTag) /* scan from start to convert to uppercase */ { *(p_cTag++) = toupper(*p_cTag); } printf("Result:%s",szBuffer); } >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
next reply other threads:[~2002-07-18 17:56 UTC|newest] Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top 2002-07-18 10:56 geert.deprins [this message] 2002-07-20 16:16 nathan
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