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wasm: make tagName null-terminated

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This commit is contained in:
Luuk de Gram
2023-04-12 06:37:55 +02:00
parent 370401cf60
commit 5c451b6e63
1 changed files with 19 additions and 4 deletions
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23
src/arch/wasm/CodeGen.zig
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@@ -6457,13 +6457,28 @@ fn getTagNameFunction(func: *CodeGen, enum_ty: Type) InnerError!u32 {
// for each tag name, create an unnamed const,
// and then get a pointer to its value.
var name_ty_payload: Type.Payload.Len = .{
.base = .{ .tag = .array_u8 },
.base = .{ .tag = .array_u8_sentinel_0 },
.data = @intCast(u64, tag_name.len),
};
const name_ty = Type.initPayload(&name_ty_payload.base);
var name_val_payload: Value.Payload.Bytes = .{
.base = .{ .tag = .bytes },
.data = tag_name,
const string_bytes = &module.string_literal_bytes;
try string_bytes.ensureUnusedCapacity(module.gpa, tag_name.len);
const gop = try module.string_literal_table.getOrPutContextAdapted(module.gpa, tag_name, Module.StringLiteralAdapter{
.bytes = string_bytes,
}, Module.StringLiteralContext{
.bytes = string_bytes,
});
if (!gop.found_existing) {
gop.key_ptr.* = .{
.index = @intCast(u32, string_bytes.items.len),
.len = @intCast(u32, tag_name.len),
};
string_bytes.appendSliceAssumeCapacity(tag_name);
gop.value_ptr.* = .none;
}
var name_val_payload: Value.Payload.StrLit = .{
.base = .{ .tag = .str_lit },
.data = gop.key_ptr.*,
};
const name_val = Value.initPayload(&name_val_payload.base);
const tag_sym_index = try func.bin_file.lowerUnnamedConst(