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source: driver/cfa.cc @ 561354f

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Last change on this file since 561354f was 81bd7e3, checked in by Andrew Beach <ajbeach@…>, 19 months ago
Adding explination to the memory leak in driver/cfa.cc.
Property mode set to `100644`
File size: 20.0 KB

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1	//
2	// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3	//
4	// The contents of this file are covered under the licence agreement in the
5	// file "LICENCE" distributed with Cforall.
6	//
7	// cfa.cc --
8	//
9	// Author : Peter A. Buhr
10	// Created On : Tue Aug 20 13:44:49 2002
11	// Last Modified By : Peter A. Buhr
12	// Last Modified On : Mon Apr 10 21:16:00 2023
13	// Update Count : 476
14	//
15
16	#include <iostream>
17	#include <cstdio> // perror
18	#include <cstdlib> // putenv, exit
19	#include <climits> // PATH_MAX
20	#include <string> // STL version
21	#include <algorithm> // find
22
23	#include <unistd.h> // execvp
24	#include <sys/types.h>
25	#include <sys/stat.h>
26
27	#include "Common/SemanticError.h"
28	#include "config.h" // configure info
29
30	using std::cerr;
31	using std::endl;
32	using std::string;
33	using std::to_string;
34
35	//#define __DEBUG_H__
36
37	#define xstr(s) str(s)
38	#define str(s) #s
39
40	static string __CFA_FLAGPREFIX__( "__CFA_FLAG" ); // "__CFA_FLAG__=" suffix
41
42	static void Putenv( char * argv[], string arg ) {
43	// environment variables must have unique names
44	static int flags = 0;
45
46	// This allocation 'leaks' memory from the program to the execution
47	// environment, as putenv does not manage the storage of the string used
48	// as an environment variable. This leak is necessary to ensure the
49	// underlying C string is allocated long enough.
50	if ( putenv( (char )( new string( string( __CFA_FLAGPREFIX__ + to_string( flags++ ) + "__=" ) + arg ) ).c_str() ) ) {
51	cerr << argv[0] << " error, cannot set environment variable." << endl;
52	exit( EXIT_FAILURE );
53	} // if
54	} // Putenv
55
56	static bool prefix( const string & arg, const string & pre ) { // check if string has prefix
57	return arg.substr( 0, pre.size() ) == pre;
58	} // prefix
59
60	// check if string has suffix
61	static bool suffix( const string & arg ) {
62	enum { NumSuffixes = 3 };
63	static const string suffixes[NumSuffixes] = { "cfa", "hfa", "ifa" };
64
65	size_t dot = arg.find_last_of( "." );
66	if ( dot == string::npos ) return false;
67	const string * end = suffixes + NumSuffixes;
68	return std::find( suffixes, end, arg.substr( dot + 1 ) ) != end;
69	} // suffix
70
71	static inline bool dirExists( const string & path ) { // check if directory exists
72	struct stat info;
73	if ( stat( path.c_str(), &info ) != 0 ) return false;
74	return (info.st_mode & S_IFDIR) != 0;
75	} // dirExists
76
77	static inline string dir(const string & path) {
78	return path.substr(0, path.find_last_of('/'));
79	} // dir
80
81	// Different path modes
82	enum PathMode {
83	Installed, // cfa is installed, use prefix
84	BuildTree, // cfa is in the tree, use source and build tree
85	Distributed // cfa is distributed, use build tree for includes and executable directory for .cfs
86	};
87
88	// Get path mode from /proc
89	PathMode FromProc() {
90	std::string abspath;
91	abspath.resize(PATH_MAX);
92
93	// get executable path from /proc/self/exe
94	ssize_t size = readlink("/proc/self/exe", const_cast<char*>(abspath.c_str()), abspath.size());
95	if ( size <= 0 ) {
96	std::cerr << "Error could not evaluate absolute path from /proc/self/exe" << std::endl;
97	std::cerr << "Failed with " << std::strerror(errno) << std::endl;
98	std::exit(1);
99	} // if
100
101	// Trim extra characters
102	abspath.resize(size);
103
104	// Are we installed
105	if ( abspath.rfind(CFA_BINDIR, 0) == 0 ) { return Installed; }
106
107	// Is this the build tree
108	if ( abspath.rfind(TOP_BUILDDIR, 0 ) == 0 ) { return BuildTree; }
109
110	// Does this look like distcc
111	if ( abspath.find( "/.cfadistcc/" ) != std::string::npos ) { return Distributed; }
112
113	// None of the above? Give up since we don't know where the prelude or include directories are
114	std::cerr << "Cannot find required files from excutable path " << abspath << std::endl;
115	std::exit(1);
116	}
117
118
119	int main( int argc, char * argv[] ) {
120	string Version( CFA_VERSION_LONG ); // current version number from CONFIG
121	string Major( xstr( CFA_VERSION_MAJOR ) ), Minor( xstr( CFA_VERSION_MINOR ) ), Patch( xstr( CFA_VERSION_PATCH ) );
122
123	string installincdir( CFA_INCDIR ); // fixed location of include files
124	string installlibdir( CFA_LIBDIR ); // fixed location of cc1 and cfa-cpp commands when installed
125	string srcdriverdir ( TOP_BUILDDIR "driver"); // fixed location of cc1 and cfa-cpp commands when in tree
126
127	string heading; // banner printed at start of cfa compilation
128	string arg; // current command-line argument during command-line parsing
129	string bprefix; // path where gcc looks for compiler steps
130	string langstd; // language standard
131
132	string compiler_path( CFA_BACKEND_CC ); // path/name of C compiler
133	string compiler_name; // name of C compiler
134
135	bool x_flag = false; // -x flag
136	bool nonoptarg = false; // no non-option arguments specified, i.e., no file names
137	bool link = true; // link stage occurring
138	bool verbose = false; // -v flag
139	bool quiet = false; // -quiet flag
140	bool debug = true; // -debug flag
141	bool nolib = false; // -nolib flag
142	bool help = false; // -help flag
143	bool CFA_flag = false; // -CFA flag
144	bool cpp_flag = false; // -E or -M flag, preprocessor only
145	bool std_flag = false; // -std= flag
146	bool noincstd_flag = false; // -no-include-stdhdr= flag
147	bool debugging __attribute(( unused )) = false; // -g flag
148	bool m32 = false; // -m32 flag
149	bool m64 = false; // -m64 flag
150	bool compiling_libs = false;
151	int o_file = 0; // -o filename position
152
153	PathMode path = FromProc();
154
155	const char * args[argc + 100]; // cfa command line values, plus some space for additional flags
156	int sargs = 1; // starting location for arguments in args list
157	int nargs = sargs; // number of arguments in args list; 0 => command name
158
159	const char * libs[argc + 20]; // non-user libraries must come separately, plus some added libraries and flags
160	int nlibs = 0;
161
162	#ifdef __DEBUG_H__
163	cerr << "CFA:" << endl;
164	for ( int i = 1; i < argc; i += 1 ) {
165	cerr << "argv[" << i << "]:\"" << argv[i] << "\"" << endl;
166	} // for
167	#endif // __DEBUG_H__
168
169	// process command-line arguments
170
171	for ( int i = 1; i < argc; i += 1 ) {
172	arg = argv[i]; // convert to string value
173	if ( prefix( arg, "-" ) ) {
174	// pass through arguments
175
176	if ( arg == "-Xlinker" \|\| arg == "-o" ) {
177	args[nargs++] = argv[i]; // pass flag along
178	i += 1;
179	if ( i == argc ) continue; // next argument available ?
180	args[nargs++] = argv[i]; // pass argument along
181	if ( arg == "-o" ) o_file = i; // remember file
182
183	// CFA specific arguments
184
185	} else if ( strncmp(arg.c_str(), "-XCFA", 5) == 0 ) { // CFA pass through
186	if ( arg.size() == 5 ) {
187	i += 1;
188	if ( i == argc ) continue; // next argument available ?
189	Putenv( argv, argv[i] ); // make available for cc1
190	} else if ( arg[5] == ',' ) { // CFA specific arguments
191	string xcfargs = arg.substr( 6 ) + ","; // add sentinel
192	for ( ;; ) {
193	size_t posn = xcfargs.find_first_of( "," ); // find separator
194	if ( posn == string::npos ) break; // any characters left ?
195	string xcfarg = xcfargs.substr( 0, posn ); // remove XCFA argument
196	Putenv( argv, xcfarg ); // make available for cc1
197	xcfargs.erase( 0, posn + 1 ); // remove first argument and comma
198	} // for
199	} else { // CFA specific arguments
200	assert( false ); // this does not make sense
201	args[nargs++] = argv[i];
202	} // if
203	} else if ( arg == "-CFA" ) {
204	CFA_flag = true; // strip -CFA flag
205	link = false;
206	args[nargs++] = "-fsyntax-only"; // stop after stage 2
207	} else if ( arg == "-debug" ) {
208	debug = true; // strip debug flag
209	} else if ( arg == "-nodebug" ) {
210	debug = false; // strip nodebug flag
211	} else if ( arg == "-quiet" ) {
212	quiet = true; // strip quiet flag
213	} else if ( arg == "-noquiet" ) {
214	quiet = false; // strip noquiet flag
215	} else if ( arg == "-invariant" ) {
216	Putenv( argv, "-" + arg );
217	} else if ( arg == "--invariant" ) {
218	Putenv( argv, arg );
219	} else if ( arg == "-no-include-stdhdr" ) {
220	noincstd_flag = true; // strip no-include-stdhdr flag
221	} else if ( arg == "-nolib" ) {
222	nolib = true; // strip nolib flag
223	} else if ( arg == "-help" ) {
224	help = true; // strip help flag
225	} else if ( arg == "-nohelp" ) {
226	help = false; // strip nohelp flag
227	} else if ( arg == "-cfalib") {
228	compiling_libs = true;
229	} else if ( arg == "-compiler" ) {
230	// use the user specified compiler
231	i += 1;
232	if ( i == argc ) continue; // next argument available ?
233	compiler_path = argv[i];
234	Putenv( argv, arg + "=" + argv[i] );
235
236	// C specific arguments
237
238	} else if ( arg == "-v" ) {
239	verbose = true; // verbosity required
240	args[nargs++] = argv[i]; // pass flag along
241	} else if ( arg == "-g" ) {
242	debugging = true; // symbolic debugging required
243	args[nargs++] = argv[i]; // pass flag along
244	} else if ( arg == "-save-temps" \|\| arg == "--save-temps" ) {
245	args[nargs++] = argv[i]; // pass flag along
246	Putenv( argv, arg ); // save cfa-cpp output
247	} else if ( prefix( arg, "-x" ) ) { // file suffix ?
248	string lang;
249	args[nargs++] = argv[i]; // pass flag along
250	if ( arg.length() == 2 ) { // separate argument ?
251	i += 1;
252	if ( i == argc ) continue; // next argument available ?
253	lang = argv[i];
254	args[nargs++] = argv[i]; // pass argument along
255	} else {
256	lang = arg.substr( 2 );
257	} // if
258	if ( x_flag ) {
259	cerr << argv[0] << " warning, only one -x flag per compile, ignoring subsequent flag." << endl;
260	} else {
261	x_flag = true;
262	Putenv( argv, string( "-x=" ) + lang );
263	} // if
264	} else if ( prefix( arg, "-std=" ) \|\| prefix( arg, "--std=" ) ) {
265	std_flag = true; // -std=XX provided
266	args[nargs++] = argv[i]; // pass flag along
267	} else if ( arg == "-w" ) {
268	args[nargs++] = argv[i]; // pass flag along
269	Putenv( argv, arg );
270	} else if ( prefix( arg, "-W" ) ) { // check before next tests
271	if ( arg == "-Werror" \|\| arg == "-Wall" ) {
272	args[nargs++] = argv[i]; // pass flag along
273	Putenv( argv, argv[i] );
274	} else {
275	unsigned int adv = prefix( arg, "-Wno-" ) ? 5 : 2;
276	args[nargs] = argv[i]; // conditionally pass argument along
277	const char * warning = argv[i] + adv; // extract warning
278	if ( SemanticWarning_Exist( warning ) ) { // replace the argument for cfa-cpp
279	Putenv( argv, arg );
280	} // if
281	nargs += 1;
282	} // if
283	} else if ( prefix( arg, "-B" ) ) {
284	bprefix = arg.substr(2); // strip -B flag
285	} else if ( arg == "-c" \|\| arg == "-S" \|\| arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
286	args[nargs++] = argv[i]; // pass flag along
287	if ( arg == "-E" \|\| arg == "-M" \|\| arg == "-MM" ) {
288	cpp_flag = true; // cpp only
289	} // if
290	link = false; // no linkage required
291	} else if ( arg == "-D" \|\| arg == "-U" \|\| arg == "-I" \|\| arg == "-MF" \|\| arg == "-MT" \|\| arg == "-MQ" \|\|
292	arg == "-include" \|\| arg == "-imacros" \|\| arg == "-idirafter" \|\| arg == "-iprefix" \|\|
293	arg == "-iwithprefix" \|\| arg == "-iwithprefixbefore" \|\| arg == "-isystem" \|\| arg == "-isysroot" ) {
294	args[nargs++] = argv[i]; // pass flag along
295	i += 1;
296	args[nargs++] = argv[i]; // pass argument along
297	} else if ( arg[1] == 'l' ) {
298	// if the user specifies a library, load it after user code
299	libs[nlibs++] = argv[i];
300	} else if ( arg == "-m32" ) {
301	m32 = true;
302	m64 = false;
303	args[nargs++] = argv[i];
304	} else if ( arg == "-m64" ) {
305	m64 = true;
306	m32 = false;
307	args[nargs++] = argv[i];
308	} else {
309	// concatenate any other arguments
310	args[nargs++] = argv[i];
311	} // if
312	} else {
313	bool cfa = suffix( arg ); // check suffix
314	if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ?
315	args[nargs++] = "-x";
316	args[nargs++] = "c";
317	} // if
318	args[nargs++] = argv[i]; // concatenate files
319	if ( ! x_flag && cfa ) { // no explicit suffix and cfa suffix ?
320	args[nargs++] = "-x";
321	args[nargs++] = "none";
322	} // if
323	nonoptarg = true;
324	} // if
325	} // for
326
327	#ifdef __x86_64__
328	args[nargs++] = "-mcx16"; // allow double-wide CAS
329	#endif // __x86_64__
330
331	#ifdef __DEBUG_H__
332	cerr << "args:";
333	for ( int i = 1; i < nargs; i += 1 ) {
334	cerr << " " << args[i];
335	} // for
336	cerr << endl;
337	#endif // __DEBUG_H__
338
339	// -E flag stops at cc1 stage 1, so cfa-cpp in cc1 stage 2 is never executed.
340	if ( cpp_flag && CFA_flag ) {
341	CFA_flag = false;
342	cerr << argv[0] << " warning, both -E and -CFA flags specified, using -E and ignoring -CFA." << endl;
343	} // if
344
345	// add the CFA include-library paths, which allow direct access to header files without directory qualification
346	string libbase;
347	switch(path) {
348	case Installed:
349	args[nargs++] = "-I" CFA_INCDIR;
350	// do not use during build
351	if ( ! noincstd_flag ) {
352	args[nargs++] = "-I" CFA_INCDIR "stdhdr";
353	} // if
354	args[nargs++] = "-I" CFA_INCDIR "concurrency";
355	args[nargs++] = "-I" CFA_INCDIR "containers";
356	libbase = CFA_LIBDIR;
357	break;
358	case BuildTree:
359	case Distributed:
360	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src";
361	// do not use during build
362	if ( ! noincstd_flag ) {
363	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/stdhdr";
364	} // if
365	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/concurrency";
366	args[nargs++] = "-I" TOP_SRCDIR "libcfa/src" "/containers";
367
368	libbase = TOP_BUILDDIR "libcfa/";
369
370	break;
371	} // if
372
373	// add stdbool to get defines for bool/true/false
374	args[nargs++] = "-imacros";
375	args[nargs++] = "stdbool.h";
376
377	if ( compiling_libs ) {
378	Putenv( argv, "-t" );
379	} // if
380
381	string arch( m32 ? CFA_32_CPU : (m64 ? CFA_64_CPU : CFA_DEFAULT_CPU) );
382	if ( ! m32 && ! m64 ) {
383	if ( arch == "x86" ) {
384	args[nargs++] = "-m32";
385	} else if ( arch == "x64" ) {
386	args[nargs++] = "-m64";
387	} // if
388	} // if
389
390	const char * config = nolib ? "nolib" : (debug ? "debug": "nodebug");
391	string libdir = libbase + arch + "-" + config;
392
393	if ( path != Distributed ) {
394	if ( ! nolib && ! dirExists( libdir ) ) {
395	cerr << argv[0] << " internal error, configuration " << config << " not installed." << endl;
396	cerr << "Was looking for " << libdir << endl;
397	for(int i = 1; i < argc; i++) {
398	cerr << argv[i] << " ";
399	}
400	cerr << endl;
401	libdir = libbase + arch + "-" + "nolib";
402	} // if
403
404	if ( ! dirExists( libdir ) ) {
405	cerr << argv[0] << " internal error, cannot find prelude directory." << endl;
406	cerr << "Was looking for " << libdir << endl;
407	exit( EXIT_FAILURE );
408	} // if
409	} // if
410
411	string preludedir;
412	switch(path) {
413	case Installed : preludedir = libdir; break;
414	case BuildTree : preludedir = libdir + "/prelude"; break;
415	case Distributed : preludedir = dir(argv[0]); break;
416	} // switch
417
418	Putenv( argv, "--prelude-dir=" + preludedir );
419	args[nargs++] = "-include";
420	args[nargs++] = (*new string(preludedir + "/defines.hfa")).c_str();
421
422	for ( int i = 0; i < nlibs; i += 1 ) { // copy non-user libraries after all user libraries
423	args[nargs++] = libs[i];
424	} // for
425
426	if ( link ) {
427	args[nargs++] = "-Xlinker";
428	args[nargs++] = "--undefined=__cfaabi_dbg_bits_write";
429	args[nargs++] = "-Xlinker";
430	args[nargs++] = "--undefined=__cfaabi_interpose_startup";
431	args[nargs++] = "-Xlinker";
432	args[nargs++] = "--undefined=__cfaabi_appready_startup";
433	args[nargs++] = "-z";
434	args[nargs++] = "execstack";
435
436	// include the cfa library in case it is needed
437	args[nargs++] = ( *new string( string("-L" ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str();
438	args[nargs++] = ( *new string( string("-Wl,-rpath," ) + libdir + (path != Installed ? "/src/.libs" : "")) ).c_str();
439	args[nargs++] = "-Wl,--push-state,--as-needed";
440	args[nargs++] = "-lcfathread";
441	args[nargs++] = "-Wl,--pop-state";
442	args[nargs++] = "-Wl,--push-state,--no-as-needed";
443	args[nargs++] = "-lcfa";
444	args[nargs++] = "-Wl,--pop-state";
445	args[nargs++] = "-pthread";
446	#if defined( __x86_64__ ) \|\| defined( __ARM_ARCH )
447	args[nargs++] = "-latomic"; // allow double-wide CAS
448	#endif // __x86_64__
449	args[nargs++] = "-ldl";
450	args[nargs++] = "-lm";
451	} // if
452
453	args[nargs++] = "-fexceptions"; // add exception flags (unconditionally)
454	args[nargs++] = "-D_GNU_SOURCE"; // force gnu libraries
455
456	// add flags based on the type of compile
457
458	args[nargs++] = ( *new string( string("-D__CFA_MAJOR__=") + Major ) ).c_str();
459	args[nargs++] = ( *new string( string("-D__CFA_MINOR__=") + Minor ) ).c_str();
460	args[nargs++] = ( *new string( string("-D__CFA_PATCH__=") + Patch ) ).c_str();
461	args[nargs++] = "-D__CFA__";
462	args[nargs++] = "-D__CFORALL__";
463	args[nargs++] = "-D__cforall";
464
465	if ( cpp_flag ) {
466	args[nargs++] = "-D__CPP__";
467	} // if
468
469	if ( CFA_flag ) {
470	Putenv( argv, "-N" );
471	Putenv( argv, "-CFA" );
472	// -CFA implies cc1 stage 2, but gcc does not pass the -o file to this stage because it believe the file is for
473	// the linker. Hence, the -o file is explicit passed to cc1 stage 2 and used as cfa-cpp's output file.
474	if ( o_file ) Putenv( argv, string( "-o=" ) + argv[o_file] );
475	} else {
476	Putenv( argv, "-L" );
477	} // if
478
479	if ( debug ) {
480	heading += " (debug)";
481	args[nargs++] = "-D__CFA_DEBUG__";
482	} else {
483	heading += " (no debug)";
484	} // if
485
486	if ( bprefix.length() == 0 ) {
487	switch(path) {
488	case Installed : bprefix = installlibdir; break;
489	case BuildTree : bprefix = srcdriverdir ; break;
490	case Distributed : bprefix = dir(argv[0]) ; break;
491	} // switch
492	} // if
493	if ( bprefix[bprefix.length() - 1] != '/' ) bprefix += '/';
494	Putenv( argv, string("-B=") + bprefix );
495
496	args[nargs++] = "-Xlinker"; // used by backtrace
497	args[nargs++] = "-export-dynamic";
498
499	// execute the compilation command
500
501	args[0] = compiler_path.c_str(); // set compiler command for exec
502	// find actual name of the compiler independent of the path to it
503	int p = compiler_path.find_last_of( '/' ); // scan r -> l for first '/'
504	if ( p == -1 ) {
505	compiler_name = compiler_path;
506	} else {
507	compiler_name = *new string( compiler_path.substr( p + 1 ) );
508	} // if
509
510	if ( prefix( compiler_name, "gcc" ) ) { // allow suffix on gcc name
511	args[nargs++] = "-no-integrated-cpp";
512	args[nargs++] = "-Wno-deprecated";
513	args[nargs++] = "-Wno-strict-aliasing"; // casting from one type to another
514	#ifdef HAVE_CAST_FUNCTION_TYPE
515	args[nargs++] = "-Wno-cast-function-type";
516	#endif // HAVE_CAST_FUNCTION_TYPE
517	if ( ! std_flag && ! x_flag ) {
518	args[nargs++] = "-std=gnu11"; // default c11, if none specified
519	} // if
520	args[nargs++] = "-fgnu89-inline";
521	args[nargs++] = "-D__int8_t_defined"; // prevent gcc type-size attributes
522	args[nargs++] = ( *new string( string("-B") + bprefix ) ).c_str();
523	} else {
524	cerr << argv[0] << " error, compiler \"" << compiler_name << "\" unsupported." << endl;
525	exit( EXIT_FAILURE );
526	} // if
527
528	args[nargs] = nullptr; // terminate
529
530	#ifdef __DEBUG_H__
531	cerr << "nargs: " << nargs << endl;
532	cerr << "args:" << endl;
533	for ( int i = 0; args[i] != nullptr; i += 1 ) {
534	cerr << " \"" << args[i] << "\"" << endl;
535	} // for
536	cerr << endl;
537	#endif // __DEBUG_H__
538
539	if ( ! quiet ) {
540	cerr << "CFA " << "Version " << Version << heading << endl;
541	if ( help ) {
542	cerr <<
543	"-debug\t\t\t: use cfa runtime with debug checking" << endl <<
544	"-help\t\t\t: print this help message" << endl <<
545	"-quiet\t\t\t: print no messages from the cfa command" << endl <<
546	"-CFA\t\t\t: run the cpp preprocessor and the cfa-cpp translator" << endl <<
547	"-XCFA -cfa-cpp-flag\t: pass next flag as-is to the cfa-cpp translator" << endl <<
548	"...\t\t\t: any other " << compiler_name << " flags" << endl;
549	} // if
550	} // if
551
552	if ( verbose ) {
553	if ( argc == 2 ) exit( EXIT_SUCCESS ); // if only the -v flag is specified, do not invoke gcc
554
555	for ( int i = 0; args[i] != nullptr; i += 1 ) {
556	cerr << args[i] << " ";
557	} // for
558	cerr << endl;
559	} // if
560
561	if ( ! nonoptarg ) {
562	cerr << argv[0] << " error, no input files" << endl;
563	exit( EXIT_FAILURE );
564	} // if
565
566	// execute the command and return the result
567
568	execvp( args[0], (char * const *)args ); // should not return
569	perror( "CFA Translator error: execvp" );
570	exit( EXIT_FAILURE );
571	} // main
572
573	// Local Variables: //
574	// tab-width: 4 //
575	// mode: c++ //
576	// compile-command: "make install" //
577	// End: //

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