return tok
			}
		}
	}
	in.Error("recursive macro invocation")
	return 0
}

func (in *Input) Text() string {
	return in.text
}

// hash processes a # preprocessor directive. It reports whether it completes.
func (in *Input) hash() bool {
	// We have a '#'; it must be followed by a known word (define, include, etc.).
	tok := in.Stack.Next()
	if tok != scanner.Ident {

# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

# Generate Go code listing errors and other #defined constant
# values (ENAMETOOLONG etc.), by asking the preprocessor
# about the definitions.

unset LANG
export LC_ALL=C
export LC_CTYPE=C

CC=${CC:-gcc}

uname=$(uname)

includes='
#include <sys/types.h>
#include <sys/file.h>
#include <fcntl.h>

# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

# Generate Go code listing errors and other #defined constant
# values (ENAMETOOLONG etc.), by asking the preprocessor
# about the definitions.

unset LANG
export LC_ALL=C
export LC_CTYPE=C

CC=${CC:-gcc}

if [[ "$GOOS" -eq "solaris" ]]; then
	# Assumes GNU versions of utilities in PATH.

build:windows --host_copt=-DWIN32_LEAN_AND_MEAN
build:windows --copt=-DNOGDI
build:windows --host_copt=-DNOGDI

# MSVC (Windows): Standards-conformant preprocessor mode
# See https://docs.microsoft.com/en-us/cpp/preprocessor/preprocessor-experimental-overview
build:windows --copt=/Zc:preprocessor
build:windows --host_copt=/Zc:preprocessor

# Misc build options we need for windows.
build:windows --linkopt=/DEBUG

}

func (c *config) checkRuntime() (skip bool, err error) {
	if c.sanitizer != "thread" {
		return false, nil
	}

	// libcgo.h sets CGO_TSAN if it detects TSAN support in the C compiler.
	// Dump the preprocessor defines to check that works.
	// (Sometimes it doesn't: see https://golang.org/issue/15983.)
	cmd, err := cc(c.cFlags...)
	if err != nil {
		return false, err
	}

import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

/**
 * Parses a subset of the C preprocessor language, to extract details of {@code #include}, {@code #import} and {@code #define} directives. Only handles a subset of the possible expressions that can be
 * used as the body of these directives.
 */

# Use of this source code is governed by a BSD-style
# license that can be found in the LICENSE file.

# Generate Go code listing errors and other #defined constant
# values (ENAMETOOLONG etc.), by asking the preprocessor
# about the definitions.

unset LANG
export LC_ALL=C
export LC_CTYPE=C

if test -z "$GOARCH" -o -z "$GOOS"; then
	echo 1>&2 "GOARCH or GOOS not defined in environment"
	exit 1
fi

For each executable or library defined, Gradle is able to build a number of different native binary variants. Examples of different variants include debug vs release binaries, 32-bit vs 64-bit binaries, and binaries produced with different custom preprocessor flags.

        XTestEmbedFiles    []string // files matched by XTestEmbedPatterns

        // Cgo directives
        CgoCFLAGS    []string // cgo: flags for C compiler
        CgoCPPFLAGS  []string // cgo: flags for C preprocessor
        CgoCXXFLAGS  []string // cgo: flags for C++ compiler
        CgoFFLAGS    []string // cgo: flags for Fortran compiler
        CgoLDFLAGS   []string // cgo: flags for linker

#include <limits>
#include <set>

#include "gtest/gtest-message.h"
#include "gtest/internal/gtest-string.h"
#include "gtest/internal/gtest-filepath.h"
#include "gtest/internal/gtest-type-util.h"

// Due to C++ preprocessor weirdness, we need double indirection to
// concatenate two tokens when one of them is __LINE__.  Writing
//
//   foo ## __LINE__
//
// will result in the token foo__LINE__, instead of foo followed by