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Date: Fri, 23 Aug 2002 05:06:00 -0000
From: Andreas Schwab <schwab@suse.de>
To: gcc-gnats@gcc.gnu.org
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Subject: c/7696: Spurious shift warning
X-SW-Source: 2002-08/txt/msg00487.txt.bz2
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>Number:         7696
>Category:       c
>Synopsis:       Spurious shift warning
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Aug 23 04:56:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator:     
>Release:        3.2
>Organization:
>Environment:
System: Linux sykes 2.4.18-SMP #1 SMP Thu May 16 09:03:14 UTC 2002 ia64 unknown unknown GNU/Linux
Architecture: ia64

	
host: ia64-suse-linux-gnu
build: ia64-suse-linux-gnu
target: ia64-suse-linux-gnu
configured with: ../configure --enable-threads=posix --prefix=/usr --with-local-prefix=/usr/local --infodir=/usr/share/info --mandir=/usr/share/man --libdir=/usr/lib --enable-languages=c,c++,f77,objc,java,ada --enable-libgcj --with-gxx-include-dir=/usr/include/g++ --with-slibdir=/lib --with-system-zlib --enable-shared --enable-__cxa_atexit ia64-suse-linux
>Description:
There is a spurious warning about shift count too big, although the
operand ist cast to the proper type.
>How-To-Repeat:
$ cat shift.c
struct ia64_psr {
  unsigned long cpl : 2;
};

unsigned long foo (struct ia64_psr *c)
{
  return (unsigned long) c->cpl << 62;
}
$ gcc -O2 -g -Wall    -c -o shift.o shift.c
shift.c: In function `foo':
shift.c:7: warning: left shift count >= width of type
>Fix:
	
>Release-Note:
>Audit-Trail:
>Unformatted: