/usr/src/gcc-4.9/debian/patches/pr52306.diff is in gcc-4.9-source 4.9.3-13ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 | # DP: Disable -fauto-inc-dec by default for m68k
# DP: since it can generate ICEs in C++ code,
# DP: until a fix is found.
Index: b/src/gcc/common.opt
===================================================================
--- a/src/gcc/common.opt
+++ b/src/gcc/common.opt
@@ -867,7 +867,7 @@ Common Report Var(flag_asynchronous_unwi
Generate unwind tables that are exact at each instruction boundary
fauto-inc-dec
-Common Report Var(flag_auto_inc_dec) Init(1)
+Common Report Var(flag_auto_inc_dec) Init(0)
Generate auto-inc/dec instructions
; -fcheck-bounds causes gcc to generate array bounds checks.
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