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compiler,reflect: make field offsets varints

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Fixes #3686
This commit is contained in:
Damian Gryski
2023-04-27 09:14:08 -07:00
committed by Ron Evans
parent 02913563df
commit 07fb3a0cad
3 changed files with 36 additions and 9 deletions
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compiler/interface.go
+6 -2
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@@ -6,6 +6,7 @@ package compiler
// interface-lowering.go for more details.
import (
"encoding/binary"
"fmt"
"go/token"
"go/types"
@@ -335,7 +336,11 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
if field.Embedded() {
flags |= structFieldFlagIsEmbedded
}
data := string(flags) + field.Name() + "\x00"
var offsBytes [binary.MaxVarintLen32]byte
offLen := binary.PutUvarint(offsBytes[:], offset)
data := string(flags) + string(offsBytes[:offLen]) + field.Name() + "\x00"
if typ.Tag(i) != "" {
if len(typ.Tag(i)) > 0xff {
c.addError(field.Pos(), fmt.Sprintf("struct tag is %d bytes which is too long, max is 255", len(typ.Tag(i))))
@@ -352,7 +357,6 @@ func (c *compilerContext) getTypeCode(typ types.Type) llvm.Value {
fieldType := c.getTypeCode(field.Type())
fields = append(fields, llvm.ConstNamedStruct(structFieldType, []llvm.Value{
fieldType,
llvm.ConstInt(c.ctx.Int32Type(), uint64(offset), false),
llvm.ConstGEP(dataGlobal.GlobalValueType(), dataGlobal, []llvm.Value{
llvm.ConstInt(c.ctx.Int32Type(), 0, false),
llvm.ConstInt(c.ctx.Int32Type(), 0, false),