--- source/ps.c
+++ source/ps.c	2006-11-09 17:37:07.000000000 +0000
@@ -1423,6 +1423,10 @@
 	quoted=1;
 	line++;
 	while (*line && !(*line == ')' && level == 0 )) {
+	    if (cp - text >= PSLINELENGTH - 2) {
+		ENDMESSAGE(gettext)
+		return NULL;
+	    }
 	    if (*line == '\\') {
 		if (*(line+1) == 'n') {
 		    *cp++ = '\n';
@@ -1477,8 +1481,13 @@
 	    }
 	}
     } else {
-	while (*line && !(*line == ' ' || *line == '\t' || *line == '\n'))
+	while (*line && !(*line == ' ' || *line == '\t' || *line == '\n')) {
+	    if (cp - text >= PSLINELENGTH - 2) {
+		ENDMESSAGE(gettext)
+		return NULL;
+	    }
 	    *cp++ = *line++;
+	}
     }
     *cp = '\0';
     if (next_char) *next_char = line;