// deferprocat using that head will throw.
// (The atomic head is ordinary garbage collected memory so that
// it's not a problem if user code holds onto it beyond
// the lifetime of drangefunc.)
//
// TODO: We could arrange for the compiler to call into the
// runtime after the loop finishes normally, to do an eager
// deferconvert, which would catch calling the loop body
// and having it defer after the loop is done. If we have a

	// It is the caller's responsibility to arrange for it to be
	// freed, such as by calling C.free (be sure to include stdlib.h
	// if C.free is needed).
	func C.CString(string) *C.char

	// Go []byte slice to C array
	// The C array is allocated in the C heap using malloc.
	// It is the caller's responsibility to arrange for it to be
	// freed, such as by calling C.free (be sure to include stdlib.h

// by reference, so make sure all map keys are addressable
// by copying them to temporaries as needed.
// The same is true for channel operations.
//
// Arrange that map index expressions only appear in direct
// assignments x = m[k] or m[k] = x, never in larger expressions.
//
// Arrange that receive expressions only appear in direct assignments
// x = <-c or as standalone statements <-c, never in larger expressions.

 * well as a simple framework for helping to make sure that assertions failing in generated threads
 * cause the associated test that generated them to itself fail (which JUnit does not otherwise
 * arrange). The rules for creating such tests are:
 *
 * <ol>
 *   <li>All assertions in code running in generated threads must use the forms {@link #threadFail},

// that if multiple go commands call raceSafeCopy(old, new) at the same time,
// they don't interfere with each other: both will succeed and return and
// later observe the correct content in new. Like in the build cache, we arrange
// this by opening new without truncation and then writing the content.
// Both go commands can do this simultaneously and will write the same thing
// (old never changes content).
func raceSafeCopy(old, new string) error {

 * well as a simple framework for helping to make sure that assertions failing in generated threads
 * cause the associated test that generated them to itself fail (which JUnit does not otherwise
 * arrange). The rules for creating such tests are:
 *
 * <ol>
 *   <li>All assertions in code running in generated threads must use the forms {@link #threadFail},

				PGOProfile:     p.Internal.PGOProfile,
			},
		}
		if pxtestNeedsPtest {
			pxtest.Internal.Imports = append(pxtest.Internal.Imports, ptest)
		}
	}

	// Arrange for testing.Testing to report true.
	ldflags := append(p.Internal.Ldflags, "-X", "testing.testBinary=1")
	gccgoflags := append(p.Internal.Gccgoflags, "-Wl,--defsym,testing.gccgoTestBinary=1")

	// Build main package.

#include "go_asm.h"
#include "go_tls.h"
#include "funcdata.h"
#include "textflag.h"

// _rt0_s390x_lib is common startup code for s390x systems when
// using -buildmode=c-archive or -buildmode=c-shared. The linker will
// arrange to invoke this function as a global constructor (for
// c-archive) or when the shared library is loaded (for c-shared).
// We expect argc and argv to be passed in the usual C ABI registers
// R2 and R3.

// violating that assumption, but the write barrier has to work.
// typedmemmove will call bulkBarrierPreWrite, but the target bytes
// are not in the heap, so that will not help. We arrange to call
// memmove and typeBitsBulkBarrier instead.

func sendDirect(t *_type, sg *sudog, src unsafe.Pointer) {
	// src is on our stack, dst is a slot on another stack.

// mod.Version may have the additional suffix "/go.mod" to request the checksum
// for the module's go.mod file only.
func checkModSum(mod module.Version, h string) error {
	// We lock goSum when manipulating it,
	// but we arrange to release the lock when calling checkSumDB,
	// so that parallel calls to checkModHash can execute parallel calls
	// to checkSumDB.

	// Check whether mod+h is listed in go.sum already. If so, we're done.