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| author | Björn Gustavsson <[email protected]> | 2018-01-10 11:34:13 +0100 |
|---|---|---|
| committer | GitHub <[email protected]> | 2018-01-10 11:34:13 +0100 |
| commit | df8499995b4994d3f85f4b80fc3c2cf941a99cdc (patch) | |
| tree | d065f80f7530cf7134544141e098599225442fdd | |
| parent | 3c333686c80b84541e4971b9eb9c97a6eb57ecf9 (diff) | |
| parent | 1ee21858db7e55b15c2f947ddfa00ae5af5c009d (diff) | |
| download | otp-df8499995b4994d3f85f4b80fc3c2cf941a99cdc.tar.gz otp-df8499995b4994d3f85f4b80fc3c2cf941a99cdc.tar.bz2 otp-df8499995b4994d3f85f4b80fc3c2cf941a99cdc.zip | |
Merge pull request #1674 from bjorng/bjorn/compiler/beam_validator
beam_validator: Strengthen validation of GC instructions
OTP-14863
| -rw-r--r-- | lib/compiler/src/beam_type.erl | 2 | ||||
| -rw-r--r-- | lib/compiler/src/beam_validator.erl | 7 |
2 files changed, 8 insertions, 1 deletions
diff --git a/lib/compiler/src/beam_type.erl b/lib/compiler/src/beam_type.erl index 6bf3f2795b..c8abfa524f 100644 --- a/lib/compiler/src/beam_type.erl +++ b/lib/compiler/src/beam_type.erl @@ -351,6 +351,8 @@ flt_need_heap_2({set,_,_,get_list}, H, Fl) -> {[],H,Fl}; flt_need_heap_2({set,_,_,{try_catch,_,_}}, H, Fl) -> {[],H,Fl}; +flt_need_heap_2({set,_,_,init}, H, Fl) -> + {[],H,Fl}; %% All other instructions should cause the insertion of an allocation %% instruction if needed. flt_need_heap_2(_, H, Fl) -> diff --git a/lib/compiler/src/beam_validator.erl b/lib/compiler/src/beam_validator.erl index be8908dd6b..6219bc6894 100644 --- a/lib/compiler/src/beam_validator.erl +++ b/lib/compiler/src/beam_validator.erl @@ -529,9 +529,10 @@ valfun_4({bif,Op,{f,Fail},Src,Dst}, Vst0) -> Type = bif_type(Op, Src, Vst), set_type_reg(Type, Dst, Vst); valfun_4({gc_bif,Op,{f,Fail},Live,Src,Dst}, #vst{current=St0}=Vst0) -> + verify_live(Live, Vst0), + verify_y_init(Vst0), St = kill_heap_allocation(St0), Vst1 = Vst0#vst{current=St}, - verify_live(Live, Vst1), Vst2 = branch_state(Fail, Vst1), Vst = prune_x_regs(Live, Vst2), validate_src(Src, Vst), @@ -685,6 +686,7 @@ valfun_4({bs_utf16_size,{f,Fail},A,Dst}, Vst) -> set_type_reg({integer,[]}, Dst, branch_state(Fail, Vst)); valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) -> verify_live(Live, Vst0), + verify_y_init(Vst0), if is_integer(Sz) -> ok; @@ -697,6 +699,7 @@ valfun_4({bs_init2,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) -> set_type_reg(binary, Dst, Vst); valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) -> verify_live(Live, Vst0), + verify_y_init(Vst0), if is_integer(Sz) -> ok; @@ -709,6 +712,7 @@ valfun_4({bs_init_bits,{f,Fail},Sz,Heap,Live,_,Dst}, Vst0) -> set_type_reg(binary, Dst, Vst); valfun_4({bs_append,{f,Fail},Bits,Heap,Live,_Unit,Bin,_Flags,Dst}, Vst0) -> verify_live(Live, Vst0), + verify_y_init(Vst0), assert_term(Bits, Vst0), assert_term(Bin, Vst0), Vst1 = heap_alloc(Heap, Vst0), @@ -944,6 +948,7 @@ deallocate(#vst{current=St}=Vst) -> test_heap(Heap, Live, Vst0) -> verify_live(Live, Vst0), + verify_y_init(Vst0), Vst = prune_x_regs(Live, Vst0), heap_alloc(Heap, Vst). |