}
	methodValueCallFrameObjs[0] = stackObjectRecord{
		off:       -int32(alignUp(abiRegArgsType.Size_, 8)), // It's always the highest address local.
		size:      int32(abiRegArgsType.Size_),
		_ptrdata:  int32(abiRegArgsType.PtrBytes),
		gcdataoff: uint32(uintptr(unsafe.Pointer(abiRegArgsType.GCData)) - mod.rodata),
	}

	// if non-negative, offset from argp
	off       int32
	size      int32
	_ptrdata  int32  // ptrdata, or -ptrdata is GC prog is used
	gcdataoff uint32 // offset to gcdata from moduledata.rodata
}

func (r *stackObjectRecord) useGCProg() bool {
	return r._ptrdata < 0
}

func (r *stackObjectRecord) ptrdata() uintptr {
	x := r._ptrdata
	if x < 0 {
		return uintptr(-x)
	}
	return uintptr(x)
}

import (
	"testshared/globallib"
)

//go:noinline
func testLoop() {
	for i, s := range globallib.Data {
		if s != int64(i) {
			panic("testLoop: mismatch")
		}
	}
}

//go:noinline
func ptrData() *[1<<20 + 10]int64 {
	return &globallib.Data
}

//go:noinline
func testMediumOffset() {
	for i, s := range globallib.Data[1<<16-2:] {
		if s != int64(i)+1<<16-2 {
			panic("testMediumOffset: index mismatch")

            void sayFoo1()
            {
                NSFileHandle *stdout = [NSFileHandle fileHandleWithStandardOutput];
                NSData *strData = [@"foo1" dataUsingEncoding: NSASCIIStringEncoding];
                [stdout writeData: strData];
            }
        """),
                sourceFile("objcpp/foo2", "foo.mm", """
            #import <iostream>
            #import "foo.h"

            void sayFoo$index()
            {
                NSFileHandle *stdout = [NSFileHandle fileHandleWithStandardOutput];
                NSData *strData = [@"foo$index" dataUsingEncoding: NSASCIIStringEncoding];
                [stdout writeData: strData];
            }
        """)
    }

            {
                NSString *hello = @"Hello";
                NSFileHandle *stdout = [NSFileHandle fileHandleWithStandardOutput];
                NSData *strData = [hello dataUsingEncoding: NSASCIIStringEncoding];
                [stdout writeData: strData];
            }"""),

                sourceFile("c", "clib.c", """
            #include <stdio.h>
            #include "hello.h"

            void bonjour() {

	if ctxt.loader.SymType(s) == sym.SDYNIMPORT {
		symData := ctxt.loader.Data(s)
		addr := decodetypeGcprogShlib(ctxt, symData)
		ptrdata := decodetypePtrdata(ctxt.Arch, symData)
		sect := findShlibSection(ctxt, ctxt.loader.SymPkg(s), addr)
		if sect != nil {
			bits := ptrdata / int64(ctxt.Arch.PtrSize)
			r := make([]byte, (bits+7)/8)
			// ldshlibsyms avoids closing the ELF file so sect.ReadAt works.

		name: "ptrdata1",
		c: `#include <stdlib.h>
		    void f26(void* p) {}`,
		imports: []string{"unsafe"},
		support: `type S26 struct { p *int; a [8*8]byte; u uintptr }`,
		body:    `i := 0; p := &S26{u:uintptr(unsafe.Pointer(&i))}; q := (*S26)(C.malloc(C.size_t(unsafe.Sizeof(*p)))); *q = *p; C.f26(unsafe.Pointer(q))`,
		fail:    false,
	},
	{
		// Like ptrdata1, but with a type that uses a GC program.

                NSString *helloWorld = @"${HELLO_WORLD}\\n";
                NSFileHandle *stdout = [NSFileHandle fileHandleWithStandardOutput];
                NSData *strData = [helloWorld dataUsingEncoding: NSASCIIStringEncoding];
                [stdout writeData: strData];
                #endif
            }
        """),
            new SourceFile("objcpp", "sum.mm", """
            #include "common.h"

    const uint8_t* const opt_data =
        reinterpret_cast<const uint8_t*>(custom_options.data());
    const size_t opt_size = custom_options.size();
    if (!flexbuffers::VerifyBuffer(opt_data, opt_size)) {
      return emitError(loc, "invalid custom options");
    }

    const flexbuffers::Vector& v =
        flexbuffers::GetRoot(opt_data, opt_size).AsVector();