[Bug translator/12139] New: SDT V3 fails with structs that are only declared

[Bug translator/12139] New: SDT V3 fails with structs that are only declared

[jistone at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12139

           Summary: SDT V3 fails with structs that are only declared
           Product: systemtap
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: translator
        AssignedTo: systemtap@sources.redhat.com
        ReportedBy: jistone@redhat.com


Using gcc version 4.4.4 20100630 (Red Hat 4.4.4-10) (GCC)

$ cat declared-struct.c
#include <sys/sdt.h>
struct foo;
int main()
{
    struct foo* p = 0;
    STAP_PROBE1(test, foo, p);
    return 0;
}

$ gcc -c declared-struct.c 
declared-struct.c: In function ‘main’:
declared-struct.c:6: error: invalid use of undefined type ‘struct foo’
declared-struct.c:6: error: invalid use of undefined type ‘struct foo’
declared-struct.c:6: error: invalid use of undefined type ‘struct foo’
declared-struct.c:6: error: invalid use of undefined type ‘struct foo’


I think it's complaining about the "+ 0" math on the argument.  If I cast "p"
to a void*, it compiles fine.

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[Bug translator/12139] SDT V3 fails with structs that are only declared

[jistone at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12139

--- Comment #1 from Josh Stone <jistone at redhat dot com> 2010-10-21 00:02:03 UTC ---
(In reply to comment #0)
> If I cast "p" to a void*, it compiles fine.
... unless we're -pedantic, and then:

$ gcc -c declared-struct.c -pedantic
declared-struct.c: In function ‘main’:
declared-struct.c:6: warning: pointer of type ‘void *’ used in arithmetic
declared-struct.c:6: warning: pointer of type ‘void *’ used in arithmetic
declared-struct.c:6: warning: pointer of type ‘void *’ used in arithmetic
declared-struct.c:6: warning: pointer of type ‘void *’ used in arithmetic

When cast as char*, int*, etc., it works even with -pedantic.

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[Bug translator/12139] SDT V3 fails with structs that are only declared

[jistone at redhat dot com]

http://sourceware.org/bugzilla/show_bug.cgi?id=12139

Josh Stone <jistone at redhat dot com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED

--- Comment #2 from Josh Stone <jistone at redhat dot com> 2011-03-01 22:53:20 UTC ---
The sdt.h shipped with 1.4 works fine.

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