/usr/src/gcc-4.6/debian/patches/mudflap-varargs.diff is in gcc-4.6-source 4.6.4-6ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | # DP: Add mudflap support for varargs
From: Michael Matz <matz@suse.de>
Subject: Fix pass49-frag (mudflap support for varargs)
* builtins.c (build_va_arg_indirect_ref): Use
build_simple_mem_ref_loc.
--- a/src/gcc/builtins.c
+++ b/src/gcc/builtins.c
@@ -4772,7 +4772,7 @@
tree
build_va_arg_indirect_ref (tree addr)
{
- addr = build_fold_indirect_ref_loc (EXPR_LOCATION (addr), addr);
+ addr = build_simple_mem_ref_loc (EXPR_LOCATION (addr), addr);
if (flag_mudflap) /* Don't instrument va_arg INDIRECT_REF. */
mf_mark (addr);
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