err() on allocation failure. WARNS=9 compliant

use #if 0, #ifndef lint, #endif /* not lint */, #endif ordering
when a message is provided, use errx() instead of err().

usr.bin/indent/args.c

@@ -33,11 +33,12 @@
  * SUCH DAMAGE.
  */
 
-#ifndef lint
 #if 0
+#ifndef lint
 static char sccsid[] = "@(#)args.c	8.1 (Berkeley) 6/6/93";
-#endif
 #endif /* not lint */
+#endif
+
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
@@ -81,7 +82,7 @@ const char *option_source = "?";
  * default value is the one actually assigned.
  */
 struct pro {
-    const char *p_name;		/* name, eg -bl, -cli */
+    const char *p_name;		/* name, e.g. -bl, -cli */
     int         p_type;		/* type (int, bool, special) */
     int         p_default;	/* the default value (if int) */
     int         p_special;	/* depends on type */
@@ -268,6 +269,8 @@ set_option(char *arg)
 		goto need_param;
 	    {
 		char *str = (char *) malloc(strlen(param_start) + 1);
+		if (str == NULL)
+			err(1, NULL);
 		strcpy(str, param_start);
 		addkey(str, 4);
 	    }

usr.bin/indent/indent.c

@@ -41,11 +41,12 @@ static const char copyright[] =
 	The Regents of the University of California.  All rights reserved.\n";
 #endif /* not lint */
 
-#ifndef lint
 #if 0
+#ifndef lint
 static char sccsid[] = "@(#)indent.c	5.17 (Berkeley) 6/7/93";
-#endif
 #endif /* not lint */
+#endif
+
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
@@ -69,11 +70,12 @@ const char *out_name = "Standard Output";	/* will always point to name
 						 * of output file */
 char        bakfile[MAXPATHLEN] = "";
 
+extern int  found_err;	/* flag set in diagN() on error */
+
 int
 main(int argc, char **argv)
 {
 
-    extern int  found_err;	/* flag set in diagN() on error */
     int         dec_ind;	/* current indentation for declarations */
     int         di_stack[20];	/* a stack of structure indentation levels */
     int         flushed_nl;	/* used when buffering up comments to remember
@@ -99,15 +101,24 @@ main(int argc, char **argv)
     |		      INITIALIZATION		      |
     \*-----------------------------------------------*/
 
+    found_err = 0;
 
     ps.p_stack[0] = stmt;	/* this is the parser's stack */
     ps.last_nl = true;		/* this is true if the last thing scanned was
 				 * a newline */
     ps.last_token = semicolon;
     combuf = (char *) malloc(bufsize);
+    if (combuf == NULL)
+	err(1, NULL);
     labbuf = (char *) malloc(bufsize);
+    if (labbuf == NULL)
+	err(1, NULL);
     codebuf = (char *) malloc(bufsize);
+    if (codebuf == NULL)
+	err(1, NULL);
     tokenbuf = (char *) malloc(bufsize);
+    if (tokenbuf == NULL)
+	err(1, NULL);
     l_com = combuf + bufsize - 5;
     l_lab = labbuf + bufsize - 5;
     l_code = codebuf + bufsize - 5;
@@ -122,6 +133,8 @@ main(int argc, char **argv)
     s_token = e_token = tokenbuf + 1;
 
     in_buffer = (char *) malloc(10);
+    if (in_buffer == NULL)
+	err(1, NULL);
     in_buffer_limit = in_buffer + 8;
     buf_ptr = buf_end = in_buffer;
     line_no = 1;
@@ -133,7 +146,6 @@ main(int argc, char **argv)
     di_stack[ps.dec_nest = 0] = 0;
     ps.want_blank = ps.in_stmt = ps.ind_stmt = false;
 
-
     scase = ps.pcase = false;
     squest = 0;
     sc_end = 0;
@@ -142,8 +154,6 @@ main(int argc, char **argv)
 
     output = 0;
 
-
-
     /*--------------------------------------------------*\
     |   		COMMAND LINE SCAN		 |
     \*--------------------------------------------------*/
@@ -349,7 +359,7 @@ main(int argc, char **argv)
 
 			if (sc_end >= &(save_com[sc_size])) {	/* check for temp buffer
 								 * overflow */
-			    diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever.");
+			    diag2(1, "Internal buffer overflow - Move big comment from right after if, while, or whatever");
 			    fflush(output);
 			    exit(1);
 			}
@@ -419,7 +429,7 @@ main(int argc, char **argv)
 		    || s_com != e_com)	/* must dump end of line */
 		dump_line();
 	    if (ps.tos > 1)	/* check for balanced braces */
-		diag2(1, "Stuff missing from end of file.");
+		diag2(1, "Stuff missing from end of file");
 
 	    if (verbose) {
 		printf("There were %d output lines and %d comments\n",
@@ -1104,7 +1114,7 @@ main(int argc, char **argv)
 		     */
 		    if (match_state[ifdef_level].tos >= 0
 			  && bcmp(&ps, &match_state[ifdef_level], sizeof ps))
-			diag2(0, "Syntactically inconsistent #ifdef alternatives.");
+			diag2(0, "Syntactically inconsistent #ifdef alternatives");
 #endif
 		}
 		if (blanklines_around_conditional_compilation) {

usr.bin/indent/indent_globs.h

@@ -58,6 +58,8 @@ FILE       *output;		/* the output file */
 	if (e_code >= l_code) { \
 	    int nsize = l_code-s_code+400; \
 	    codebuf = (char *) realloc(codebuf, nsize); \
+	    if (codebuf == NULL) \
+		err(1, NULL); \
 	    e_code = codebuf + (e_code-s_code) + 1; \
 	    l_code = codebuf + nsize - 5; \
 	    s_code = codebuf + 1; \
@@ -66,6 +68,8 @@ FILE       *output;		/* the output file */
 	if (e_com >= l_com) { \
 	    int nsize = l_com-s_com+400; \
 	    combuf = (char *) realloc(combuf, nsize); \
+	    if (combuf == NULL) \
+		err(1, NULL); \
 	    e_com = combuf + (e_com-s_com) + 1; \
 	    l_com = combuf + nsize - 5; \
 	    s_com = combuf + 1; \
@@ -74,6 +78,8 @@ FILE       *output;		/* the output file */
 	if (e_lab >= l_lab) { \
 	    int nsize = l_lab-s_lab+400; \
 	    labbuf = (char *) realloc(labbuf, nsize); \
+	    if (labbuf == NULL) \
+		err(1, NULL); \
 	    e_lab = labbuf + (e_lab-s_lab) + 1; \
 	    l_lab = labbuf + nsize - 5; \
 	    s_lab = labbuf + 1; \
@@ -82,6 +88,8 @@ FILE       *output;		/* the output file */
 	if (e_token >= l_token) { \
 	    int nsize = l_token-s_token+400; \
 	    tokenbuf = (char *) realloc(tokenbuf, nsize); \
+	    if (tokenbuf == NULL) \
+		err(1, NULL); \
 	    e_token = tokenbuf + (e_token-s_token) + 1; \
 	    l_token = tokenbuf + nsize - 5; \
 	    s_token = tokenbuf + 1; \

usr.bin/indent/io.c

@@ -33,11 +33,12 @@
  * SUCH DAMAGE.
  */
 
-#ifndef lint
 #if 0
+#ifndef lint
 static char sccsid[] = "@(#)io.c	8.1 (Berkeley) 6/6/93";
-#endif
 #endif /* not lint */
+#endif
+
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
@@ -358,8 +359,8 @@ fill_buffer(void)
 	    int size = (in_buffer_limit - in_buffer) * 2 + 10;
 	    int offset = p - in_buffer;
 	    in_buffer = realloc(in_buffer, size);
-	    if (in_buffer == 0)
-		err(1, "input line too long");
+	    if (in_buffer == NULL)
+		errx(1, "input line too long");
 	    p = in_buffer + offset;
 	    in_buffer_limit = in_buffer + size - 2;
 	}

usr.bin/indent/lexi.c

@@ -47,6 +47,7 @@ __FBSDID("$FreeBSD$");
  * of token scanned.
  */
 
+#include <err.h>
 #include <stdio.h>
 #include <ctype.h>
 #include <stdlib.h>
@@ -58,8 +59,6 @@ __FBSDID("$FreeBSD$");
 #define alphanum 1
 #define opchar 3
 
-void fill_buffer(void);
-
 struct templ {
     const char *rwd;
     int         rwcode;

usr.bin/indent/parse.c

@@ -32,11 +32,13 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  */
+
 #if 0
 #ifndef lint
 static char sccsid[] = "@(#)parse.c	8.1 (Berkeley) 6/6/93";
 #endif /* not lint */
 #endif
+
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
@@ -168,7 +170,7 @@ parse(int tk) /* tk: the code for the construct scanned */
 	    ps.p_stack[ps.tos] = stmt;
 	}
 	else
-	    diag2(1, "Statement nesting error.");
+	    diag2(1, "Statement nesting error");
 	break;
 
     case swstmt:		/* had switch (...) */

usr.bin/indent/pr_comment.c

@@ -33,14 +33,16 @@
  * SUCH DAMAGE.
  */
 
-#ifndef lint
 #if 0
+#ifndef lint
 static char sccsid[] = "@(#)pr_comment.c	8.1 (Berkeley) 6/6/93";
-#endif
 #endif /* not lint */
+#endif
+
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include <err.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include "indent_globs.h"