CVS commit: src/usr.bin/xlint/lint1

[Christos Zoulas]

Module Name:    src
Committed By:   christos
Date:           Fri Apr 18 21:53:44 UTC 2014

Modified Files:
        src/usr.bin/xlint/lint1: main1.c

Log Message:
provide a poor man's fmemopen()


To generate a diff of this commit:
cvs rdiff -u -r1.24 -r1.25 src/usr.bin/xlint/lint1/main1.c

Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.


Modified files:

Index: src/usr.bin/xlint/lint1/main1.c
diff -u src/usr.bin/xlint/lint1/main1.c:1.24 src/usr.bin/xlint/lint1/main1.c:1.25
--- src/usr.bin/xlint/lint1/main1.c:1.24	Thu Apr 17 22:17:14 2014
+++ src/usr.bin/xlint/lint1/main1.c	Fri Apr 18 17:53:44 2014
@@ -1,4 +1,4 @@
-/*	$NetBSD: main1.c,v 1.24 2014/04/18 02:17:14 christos Exp $	*/
+/*	$NetBSD: main1.c,v 1.25 2014/04/18 21:53:44 christos Exp $	*/
 
 /*
  * Copyright (c) 1994, 1995 Jochen Pohl
@@ -37,7 +37,7 @@
 
 #include <sys/cdefs.h>
 #if defined(__RCSID) && !defined(lint)
-__RCSID("$NetBSD: main1.c,v 1.24 2014/04/18 02:17:14 christos Exp $");
+__RCSID("$NetBSD: main1.c,v 1.25 2014/04/18 21:53:44 christos Exp $");
 #endif
 
 #include <sys/types.h>
@@ -128,13 +128,37 @@ sig_atomic_t fpe;
 
 static	void	usage(void);
 
-#if !HAVE_NBTOOL_CONFIG_H
 static const char builtins[] =
     "int __builtin_isinf(long double);\n"
     "int __builtin_isnan(long double);\n"
     "int __builtin_copysign(long double, long double);\n"
 ;
+static size_t builtinlen = sizeof(builtins) - 1;
+
+static FILE *
+bltin(void)
+{
+#if HAVE_NBTOOL_CONFIG_H
+	char template[] = "/tmp/lint.XXXXXX";
+	int fd;
+	FILE *fp;
+	if ((fd = mkstemp(template)) == -1)
+		return NULL;
+	(void)unlink(template);
+	if ((fp = fdopen(fd, "r+")) == NULL) {
+		close(fd);
+		return NULL;
+	}
+	if (fwrite(builtins, 1, builtinlen, fp) != builtinlen) {
+		fclose(fp);
+		return NULL;
+	}
+	rewind(fp);
+	return fp;
+#else
+	return fmemopen(__UNCONST(builtins), builtinlen, "r");
 #endif
+}
 
 /*ARGSUSED*/
 static void
@@ -222,16 +246,16 @@ main(int argc, char *argv[])
 	initscan();
 	initmtab();
 
-#if !HAVE_NBTOOL_CONFIG_H
-	if ((yyin = fmemopen(__UNCONST(builtins), sizeof(builtins) - 1, "r"))
-	    == NULL)
+	if ((yyin = bltin()) == NULL)
 		err(1, "cannot open builtins");
 	yyparse();
-#endif
+	fclose(yyin);
+
 	/* open the input file */
 	if ((yyin = fopen(argv[0], "r")) == NULL)
 		err(1, "cannot open '%s'", argv[0]);
 	yyparse();
+	fclose(yyin);
 
 	/* Following warnings cannot be suppressed by LINTED */
 	lwarn = LWARN_ALL;