The code generated by the mfd template does not correctly calculate the length
of a bits field when all the bits between a byte boundary are 0, but a later
byte does have some bits set (eg 0x8f008e). This patch fixes the code template.
There is no code in any net-snmp module that has this incorrectly generated
code, so this patch is 100% safe.
Index: local/mib2c-conf.d/mfd-interface.m2c
===================================================================
RCS file: /cvsroot/net-snmp/net-snmp/local/mib2c-conf.d/mfd-interface.m2c,v
retrieving revision 1.71
diff -u -p -r1.71 mfd-interface.m2c
--- local/mib2c-conf.d/mfd-interface.m2c 7 Sep 2006 16:29:55 -0000
1.71
+++ local/mib2c-conf.d/mfd-interface.m2c 27 Oct 2006 14:23:11 -0000
@@ -850,7 +850,8 @@ _${context}_get_column( ${context}_rowre
@ if $m2c_node_needlength == 0@
@ if "$node.perltype" eq "BITS"@
{
- $m2c_decl tmp = 0xff << ((sizeof($m2c_decl) - 1) * 8);
+ $m2c_decl mask = 0xff << ((sizeof($m2c_decl) - 1) * 8);
+ int idx = 0;
@ else@
var->val_len = sizeof($m2c_decl);
@ end@
@@ -862,10 +863,11 @@ rc = ${node}_get(rowreq_ctx, $m2c_node_v
* check for length of bits string
*/
var->val_len = 0;
- while( 0 != tmp ) {
- if ( *(($m2c_decl *) var->val.string) & tmp )
- ++var->val_len;
- tmp = tmp >> 8;
+ while( 0 != mask ) {
+ ++idx;
+ if ( *(($m2c_decl *) var->val.string) & mask )
+ var->val_len = idx;
+ mask = mask >> 8;
}
}
@ end@
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