shrinkstack(gp)
	})
	// If our new stack contains frame pointers into the old stack, this will
	// crash because the old stack has been poisoned.
	FPCallers(make([]uintptr, 1024))
}

// BlockOnSystemStack switches to the system stack, prints "x\n" to
// stderr, and blocks in a stack containing
// "runtime.blockOnSystemStackInternal".
func BlockOnSystemStack() {
	systemstack(blockOnSystemStackInternal)
}

			goto Error
		}

	case *ast.TypeAssertExpr:
		check.expr(nil, x, e.X)
		if x.mode == invalid {
			goto Error
		}
		// x.(type) expressions are handled explicitly in type switches
		if e.Type == nil {
			// Don't use InvalidSyntaxTree because this can occur in the AST produced by
			// go/parser.
			check.error(e, BadTypeKeyword, "use of .(type) outside type switch")
			goto Error
		}

		}
	}

	// Tell gcc not to include flags in object files, which defeats the
	// point of -fdebug-prefix-map above.
	if b.gccSupportsFlag(compiler, "-gno-record-gcc-switches") {
		a = append(a, "-gno-record-gcc-switches")
	}

	// On OS X, some of the compilers behave as if -fno-common
	// is always set, and the Mach-O linker in 6l/8l assumes this.
	// See https://golang.org/issue/3253.

		if !isValid(T) {
			goto Error
		}
		check.typeAssertion(e, x, T, false)
		x.mode = commaok
		x.typ = T

	case *syntax.TypeSwitchGuard:
		// x.(type) expressions are handled explicitly in type switches
		check.error(e, InvalidSyntaxTree, "use of .(type) outside type switch")
		check.use(e.X)
		goto Error

	case *syntax.CallExpr:
		return check.callExpr(x, e)

	case *syntax.ListExpr:

		// The function we are in does a write to SP that we don't know
		// how to encode in the spdelta table. Examples include context
		// switch routines like runtime.gogo but also any code that switches
		// to the g0 stack to run host C code.
		// We can't reliably unwind the SP (we might not even be on
		// the stack we think we are), so stop the traceback here.
		//

					// Report this more specific error, unless we are a command like 'go work use'
					// or 'go work sync', which will fix the problem after the caller sees the TooNewError
					// and switches to a newer toolchain.
					err = errWorkTooOld(gomod, workFile, tooNew.GoVersion)
				} else {
					err = fmt.Errorf("cannot load module %s listed in go.work file: %w",
						base.ShortPath(filepath.Dir(gomod)), err)

inside the "switch" to determine which branch
to execute.
</p>

<pre class="ebnf">
SwitchStmt = ExprSwitchStmt | TypeSwitchStmt .
</pre>

<p>
There are two forms: expression switches and type switches.
In an expression switch, the cases contain expressions that are compared
against the value of the switch expression.
In a type switch, the cases contain types that are compared against the

	// waiting for the server to approve.
	// This time does not include the time to send the request header.
	ExpectContinueTimeout time.Duration

	// TLSNextProto specifies how the Transport switches to an
	// alternate protocol (such as HTTP/2) after a TLS ALPN
	// protocol negotiation. If Transport dials a TLS connection
	// with a non-empty protocol name and TLSNextProto contains a

	}
}

func returns3() (_ int) {
	return
	{
		var _ int // blank (_) identifiers never shadow since they are in no scope
		return
	}
}

func switches0() {
	var x int

	switch x {
	}

	switch x {
	default:
	default /* ERROR "multiple defaults" */ :
	}

	switch {
	case 1  /* ERROR "cannot convert" */ :
	}

		VendorModulesInGOROOTSrc: true,
		ResolveMissingImports:    true,
		LoadTests:                true,
		AllowErrors:              tidyE,
		SilenceMissingStdImports: true,
		Switcher:                 new(toolchain.Switcher),
	}, "all")