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c/6800: bad warnings for flexible arrays
- From: davem at redhat dot com
- To: gcc-gnats at gcc dot gnu dot org
- Date: 24 May 2002 17:44:44 -0000
- Subject: c/6800: bad warnings for flexible arrays
- Reply-to: davem at redhat dot com
>Number: 6800
>Category: c
>Synopsis: bad warnings for flexible arrays
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: unassigned
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Fri May 24 10:46:01 PDT 2002
>Closed-Date:
>Last-Modified:
>Originator: davem@redhat.com
>Release: 3.1
>Organization:
>Environment:
sparc-unknown-linux
>Description:
Operations, such as __typeof__(f->bar) warn
when the 'bar' member of 'f' is a flexible
array.
See attachment source, it warns:
? gcc -c -o flex.o flex.c
flex.c: In function `bar':
flex.c:8: array initialized from non-constant array expression
flex.c:8: storage size of `b' isn't known
>How-To-Repeat:
gcc -c -o flex.o flex.c
>Fix:
Shrug... don't use flexible arrays :-)
>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/octet-stream; name="flex.c"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="flex.c"
c3RydWN0IGZvbyB7CglpbnQgeDsKCWludCBhW107Cn07Cgp2b2lkICpiYXIoc3RydWN0IGZvbyAq
cCkKewoJX190eXBlb2ZfXyhwLT5hKSBiID0gcC0+YTsKCglyZXR1cm4gYiArIDE7Cn0K