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Re: Compilation error when doing user space probe on FC9.


Jim Keniston wrote:
On Fri, 2008-12-05 at 12:19 +0800, Wenji Huang wrote:
...
Yes, this error is specific to 2.6.25 Fedora shipment kernel. Works fine
on 2.6.28-rc7+latest utrace patch. But got warning on 2.6.27.5-41.fc9 kernel.


In file included from /usr/local/share/systemtap/runtime/uprobes/../uprobes2/uprobes_arch.c:2,
from /usr/local/share/systemtap/runtime/uprobes/../uprobes2/uprobes.c:2795,
from /usr/local/share/systemtap/runtime/uprobes/uprobes.c:8:
/usr/local/share/systemtap/runtime/uprobes/../uprobes2/uprobes_x86.c: In function âhandle_riprel_insn':
/usr/local/share/systemtap/runtime/uprobes/../uprobes2/uprobes_x86.c:420: warning: passing argument 2 of âconstant_test_bit' from incompatible pointer type
/usr/local/share/systemtap/runtime/uprobes/../uprobes2/uprobes_x86.c:420: warning: passing argument 2 of âvariable_test_bit' from incompatible pointer type
/usr/local/share/systemtap/runtime/uprobes/../uprobes2/uprobes_x86.c:423: warning: passing argument 2 of âconstant_test_bit' from incompatible pointer type
/usr/local/share/systemtap/runtime/uprobes/../uprobes2/uprobes_x86.c:423: warning: passing argument 2 of âvariable_test_bit' from incompatible pointer type

Yeah, somebody has mucked with the definitions of constant_test_bit() and variable_test_bit(). On lines 420 and 423, could you try casting twobyte_has_modrm and onebyte_has_modrm, respectively, to (unsigned long*)? If that doesn't work, try casting them to (const unsigned long*).

Thanks.
Jim
Yes, casting them to (unsigned long*) will erase the warning.

Regards,
Wenji


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