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Cause: The definition of IPTOS_CLASS referenced referenced the wrong object.
Consequence: Applications built which referenced IPTOS_CLASS from ip.h may not build. If they build they may not operate correctly.
Fix: The definition of IPTOS_CLASS was fixed to reference the right object.
Result: Applications which reference IPTOS_CLASS from ip.h should build and work correctly.
DescriptionValentine Sinitsyn
2012-10-09 07:06:17 UTC
Description of problem:
netinet/ip.h contains incorrect macro definition:
#define IPTOS_CLASS(class) ((tos) & IPTOS_CLASS_MASK)
Being expanded, this macro always results in ((tos) & IPTOS_CLASS_MASK), regardless what the argument (class) is.
Version-Release number of selected component (if applicable):
glibc-headers 2.12
How reproducible:
Always
Steps to Reproduce:
1. #include <netinet/ip.h>
2. Define struct iphdr iph;
3. Try to evaluate IPTOS_PREC(iph.tos)
Actual results:
Compilation error is issued:
error: ‘tos’ undeclared (first use in this function)
Expected results:
The program compiles okay.
Additional info:
None
Comment 2Valentine Sinitsyn
2012-10-09 08:31:04 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
http://rhn.redhat.com/errata/RHBA-2013-0279.html