[Net-snmp-patches] [ net-snmp-Patches-2835577 ] Fix gcc warning about constant expression

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Patches item #2835577, was opened at 2009-08-11 16:06
Message generated for change (Comment added) made by bvassche
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Bart Van Assche (bvassche)
Assigned to: Nobody/Anonymous (nobody)
Summary: Fix gcc warning about constant expression

Initial Comment:
When compiling the Net-SNMP source code with GCC, GCC emits several warnings about constant expressions. Many of these are triggered by passing a pointer as the first argument to the macro SNMP_ZERO() of which the compiler knows that it never will be NULL. The attached patch modifies the definition of SNMP_ZERO() such that gcc does not emit a warning when this macro is used.

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>Comment By: Bart Van Assche (bvassche)
Date: 2009-08-12 11:28

Message:
The patch silence-SNMP_ZERO also works fine. That patch could even be
improved further by replacing '\0' by 0, which is more readable IMHO.

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Comment By: Magnus Fromreide (magfr)
Date: 2009-08-12 10:52

Message:
I think the original patch is bad - it papers over the problem.
A better patch would be to use plain memset instead of the macro on the
affected locations, does my patch silence-SNMP_ZERO solve the problem for
you?

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=312694&aid=2835577&group_id=12694