diff options
Diffstat (limited to 'extra/graphviz/yyerror0.patch')
| -rw-r--r-- | extra/graphviz/yyerror0.patch | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/extra/graphviz/yyerror0.patch b/extra/graphviz/yyerror0.patch new file mode 100644 index 000000000..f8bb98373 --- /dev/null +++ b/extra/graphviz/yyerror0.patch @@ -0,0 +1,53 @@ +From 7aaddf52cd98589fb0c3ab72a393f8411838438a Mon Sep 17 00:00:00 2001 +From: "Emden R. Gansner" <erg@alum.mit.edu> +Date: Fri, 4 Oct 2013 09:06:39 -0400 +Subject: [PATCH] Fix buffer overflow problem when reporting a syntax error + with a very long input line + +--- + lib/cgraph/scan.l | 21 +++++++++++++++------ + 1 file changed, 15 insertions(+), 6 deletions(-) + +diff --git a/lib/cgraph/scan.l b/lib/cgraph/scan.l +index 3cfde0f..2efd203 100644 +--- a/lib/cgraph/scan.l ++++ b/lib/cgraph/scan.l +@@ -16,6 +16,7 @@ + %{ + #include <grammar.h> + #include <cghdr.h> ++#include <agxbuf.h> + #include <ctype.h> + #define GRAPH_EOF_TOKEN '@' /* lex class must be defined below */ + /* this is a workaround for linux flex */ +@@ -191,13 +192,21 @@ ID ({NAME}|{NUMBER}) + %% + void yyerror(char *str) + { ++ unsigned char xbuf[BUFSIZ]; + char buf[BUFSIZ]; +- if (InputFile) +- sprintf(buf,"%s:%d: %s in line %d near '%s'\n",InputFile, line_num, +- str,line_num,yytext); +- else +- sprintf(buf," %s in line %d near '%s'\n", str,line_num,yytext); +- agerr(AGWARN,buf); ++ agxbuf xb; ++ ++ agxbinit(&xb, BUFSIZ, xbuf); ++ if (InputFile) { ++ agxbput (&xb, InputFile); ++ agxbput (&xb, ": "); ++ } ++ sprintf(buf," %s in line %d near '", str,line_num); ++ agxbput (&xb, buf); ++ agxbput (&xb, yytext); ++ agxbput (&xb,"'\n"); ++ agerr(AGWARN,agxbuse(&xb)); ++ agxbfree(&xb); + } + /* must be here to see flex's macro defns */ + void aglexeof() { unput(GRAPH_EOF_TOKEN); } +-- +1.8.5.1 + |