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From: "rguenth at gcc dot gnu dot org" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug c/29154] [4.0/4.1/4.2 Regression] *(* ppointer++)++ = *pointer++ generates bad code Date: Thu, 21 Sep 2006 09:12:00 -0000 [thread overview] Message-ID: <20060921091202.21024.qmail@sourceware.org> (raw) In-Reply-To: <bug-29154-13237@http.gcc.gnu.org/bugzilla/> ------- Comment #2 from rguenth at gcc dot gnu dot org 2006-09-21 09:12 ------- Confirmed. Gimplification get's this wrong. Testcase: extern void abort (void); void foo(int **p, int *q) { *(*p++)++ = *q++; } int main() { int i = 42, j = 0; int *p = &i; foo(&p, &j); if (p - 1 != &i || j != 0 || i != 0) abort (); return 0; } -- rguenth at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |rguenth at gcc dot gnu dot | |org, rakdver at gcc dot gnu | |dot org Status|UNCONFIRMED |NEW Ever Confirmed|0 |1 Keywords| |wrong-code Known to fail| |4.0.3 4.1.1 4.2.0 Known to work| |3.4.6 Last reconfirmed|0000-00-00 00:00:00 |2006-09-21 09:12:02 date| | Summary|*(* ppointer++)++ = |[4.0/4.1/4.2 Regression] *(* |*pointer++ generates bad |ppointer++)++ = *pointer++ |code |generates bad code http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29154
next prev parent reply other threads:[~2006-09-21 9:12 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2006-09-20 18:01 [Bug c/29154] New: " ansak at bigfoot dot com 2006-09-20 18:47 ` [Bug c/29154] " pinskia at gcc dot gnu dot org 2006-09-21 9:12 ` rguenth at gcc dot gnu dot org [this message] 2006-09-22 7:30 ` [Bug c/29154] [4.0/4.1/4.2 Regression] " pinskia at gcc dot gnu dot org 2006-09-22 20:25 ` jakub at gcc dot gnu dot org 2006-09-23 10:33 ` rguenth at gcc dot gnu dot org 2006-10-01 22:57 ` mmitchel at gcc dot gnu dot org 2006-10-02 6:12 ` jakub at gcc dot gnu dot org 2006-10-02 6:24 ` jakub at gcc dot gnu dot org 2006-10-02 6:28 ` [Bug c/29154] [4.0 " jakub at gcc dot gnu dot org 2007-02-03 20:18 ` gdr at gcc dot gnu dot org
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