pkg/compiler: fix alignment corner case

Fix alignemnt calculation for packed structs with alignment and bitfields.
Amusingly this affected only a single real struct -- ipv6_fragment_ext_header.

5 files changed, 10 insertions, 15 deletions

diff --git a/sys/linux/386.go b/sys/linux/386.go
index 19a16e2ba..f9f726d57 100644
--- a/sys/linux/386.go
+++ b/sys/linux/386.go
@@ -4400,7 +4400,7 @@ var structDescs_386 = []*KeyedStruct{
 		&StructType{Key: StructKey{Name: "ipv6_fragment_ext_header"}, FldName: "fragment"},
 		&StructType{Key: StructKey{Name: "ipv6_dstopts_ext_header"}, FldName: "dstopts"},
 	}}},
-	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 14}, Fields: []Type{
+	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 8}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved1", TypeSize: 1}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_hi", TypeSize: 1}}},
@@ -4408,7 +4408,6 @@ var structDescs_386 = []*KeyedStruct{
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved2", TypeSize: 1}, BitfieldOff: 1, BitfieldLen: 2, BitfieldMdl: true}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_lo", TypeSize: 1}, BitfieldOff: 3, BitfieldLen: 5}},
 		&ProcType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "proc", FldName: "identification", TypeSize: 4}}, ValuesStart: 100, ValuesPerProc: 4},
-		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 6}}, IsPad: true},
 	}, AlignAttr: 8}},
 	{Key: StructKey{Name: "ipv6_hopots_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_hopots_ext_header", IsVarlen: true}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
@@ -25033,4 +25032,4 @@ var consts_386 = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_386 = "8af2920eb5a6c27c2e71e75f7a211cf2b0afed22"
+const revision_386 = "7fa1dc861170866b93bcdf1919d822e8d0a07cec"
diff --git a/sys/linux/amd64.go b/sys/linux/amd64.go
index a85616326..f6b0c54a1 100644
--- a/sys/linux/amd64.go
+++ b/sys/linux/amd64.go
@@ -4491,7 +4491,7 @@ var structDescs_amd64 = []*KeyedStruct{
 		&StructType{Key: StructKey{Name: "ipv6_fragment_ext_header"}, FldName: "fragment"},
 		&StructType{Key: StructKey{Name: "ipv6_dstopts_ext_header"}, FldName: "dstopts"},
 	}}},
-	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 14}, Fields: []Type{
+	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 8}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved1", TypeSize: 1}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_hi", TypeSize: 1}}},
@@ -4499,7 +4499,6 @@ var structDescs_amd64 = []*KeyedStruct{
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved2", TypeSize: 1}, BitfieldOff: 1, BitfieldLen: 2, BitfieldMdl: true}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_lo", TypeSize: 1}, BitfieldOff: 3, BitfieldLen: 5}},
 		&ProcType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "proc", FldName: "identification", TypeSize: 4}}, ValuesStart: 100, ValuesPerProc: 4},
-		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 6}}, IsPad: true},
 	}, AlignAttr: 8}},
 	{Key: StructKey{Name: "ipv6_hopots_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_hopots_ext_header", IsVarlen: true}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
@@ -25634,4 +25633,4 @@ var consts_amd64 = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_amd64 = "5e90d87bd5a53f631c72bfac0710424ecd2c9e28"
+const revision_amd64 = "f5d957ae165e714c54b67d39db5982187b5393ec"
diff --git a/sys/linux/arm.go b/sys/linux/arm.go
index 2a5f3abb8..d158d66ac 100644
--- a/sys/linux/arm.go
+++ b/sys/linux/arm.go
@@ -4417,7 +4417,7 @@ var structDescs_arm = []*KeyedStruct{
 		&StructType{Key: StructKey{Name: "ipv6_fragment_ext_header"}, FldName: "fragment"},
 		&StructType{Key: StructKey{Name: "ipv6_dstopts_ext_header"}, FldName: "dstopts"},
 	}}},
-	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 14}, Fields: []Type{
+	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 8}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved1", TypeSize: 1}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_hi", TypeSize: 1}}},
@@ -4425,7 +4425,6 @@ var structDescs_arm = []*KeyedStruct{
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved2", TypeSize: 1}, BitfieldOff: 1, BitfieldLen: 2, BitfieldMdl: true}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_lo", TypeSize: 1}, BitfieldOff: 3, BitfieldLen: 5}},
 		&ProcType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "proc", FldName: "identification", TypeSize: 4}}, ValuesStart: 100, ValuesPerProc: 4},
-		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 6}}, IsPad: true},
 	}, AlignAttr: 8}},
 	{Key: StructKey{Name: "ipv6_hopots_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_hopots_ext_header", IsVarlen: true}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
@@ -24872,4 +24871,4 @@ var consts_arm = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_arm = "04da8a970e93697b72a9365fb60321d5a306d0b3"
+const revision_arm = "4b33f66a0aeae24040db5b4a35e18e6ff2977b10"
diff --git a/sys/linux/arm64.go b/sys/linux/arm64.go
index f81cdd64a..107e13b47 100644
--- a/sys/linux/arm64.go
+++ b/sys/linux/arm64.go
@@ -4491,7 +4491,7 @@ var structDescs_arm64 = []*KeyedStruct{
 		&StructType{Key: StructKey{Name: "ipv6_fragment_ext_header"}, FldName: "fragment"},
 		&StructType{Key: StructKey{Name: "ipv6_dstopts_ext_header"}, FldName: "dstopts"},
 	}}},
-	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 14}, Fields: []Type{
+	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 8}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved1", TypeSize: 1}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_hi", TypeSize: 1}}},
@@ -4499,7 +4499,6 @@ var structDescs_arm64 = []*KeyedStruct{
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved2", TypeSize: 1}, BitfieldOff: 1, BitfieldLen: 2, BitfieldMdl: true}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_lo", TypeSize: 1}, BitfieldOff: 3, BitfieldLen: 5}},
 		&ProcType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "proc", FldName: "identification", TypeSize: 4}}, ValuesStart: 100, ValuesPerProc: 4},
-		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 6}}, IsPad: true},
 	}, AlignAttr: 8}},
 	{Key: StructKey{Name: "ipv6_hopots_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_hopots_ext_header", IsVarlen: true}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
@@ -25016,4 +25015,4 @@ var consts_arm64 = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_arm64 = "7eb7f166eca34015f8bde36f49218b4792dfa8ab"
+const revision_arm64 = "95e5f9d1ee68c969b1db26d8fd6ef0fb8b329019"
diff --git a/sys/linux/ppc64le.go b/sys/linux/ppc64le.go
index ee51901b9..e89daa6ea 100644
--- a/sys/linux/ppc64le.go
+++ b/sys/linux/ppc64le.go
@@ -4472,7 +4472,7 @@ var structDescs_ppc64le = []*KeyedStruct{
 		&StructType{Key: StructKey{Name: "ipv6_fragment_ext_header"}, FldName: "fragment"},
 		&StructType{Key: StructKey{Name: "ipv6_dstopts_ext_header"}, FldName: "dstopts"},
 	}}},
-	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 14}, Fields: []Type{
+	{Key: StructKey{Name: "ipv6_fragment_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_fragment_ext_header", TypeSize: 8}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved1", TypeSize: 1}}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_hi", TypeSize: 1}}},
@@ -4480,7 +4480,6 @@ var structDescs_ppc64le = []*KeyedStruct{
 		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "const", FldName: "reserved2", TypeSize: 1}, BitfieldOff: 1, BitfieldLen: 2, BitfieldMdl: true}},
 		&IntType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "int8", FldName: "fragment_off_lo", TypeSize: 1}, BitfieldOff: 3, BitfieldLen: 5}},
 		&ProcType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "proc", FldName: "identification", TypeSize: 4}}, ValuesStart: 100, ValuesPerProc: 4},
-		&ConstType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "pad", TypeSize: 6}}, IsPad: true},
 	}, AlignAttr: 8}},
 	{Key: StructKey{Name: "ipv6_hopots_ext_header"}, Desc: &StructDesc{TypeCommon: TypeCommon{TypeName: "ipv6_hopots_ext_header", IsVarlen: true}, Fields: []Type{
 		&FlagsType{IntTypeCommon: IntTypeCommon{TypeCommon: TypeCommon{TypeName: "ipv6_types", FldName: "next_header", TypeSize: 1}}, Vals: []uint64{0, 1, 2, 4, 6, 8, 12, 17, 22, 29, 33, 41, 46, 47, 50, 51, 92, 94, 98, 103, 108, 132, 136, 137, 255, 0, 43, 44, 58, 59, 60, 135, 0, 43, 44, 47, 50, 51, 58, 59, 60, 135, 115}},
@@ -24778,4 +24777,4 @@ var consts_ppc64le = []ConstValue{
 	{Name: "bpf_insn_load_imm_dw", Value: 24},
 }
 
-const revision_ppc64le = "a895f7df654ac3981d94d50200c4036404459583"
+const revision_ppc64le = "067ce945ca9c59814a9ba64002ae646a553e757c"