PyGrammar_LabelRepr(): Conversion of sprintf() to PyOS_snprintf() for

buffer overrun avoidance.

diff --git a/Parser/grammar1.c b/Parser/grammar1.c
index b2631b785d5471c2357b3c05947b6ec35911407a..45af139dac390555b89c1fb0a297f04df85fa3b0 100644 (file)
--- a/Parser/grammar1.c
+++ b/Parser/grammar1.c
@@ -1,4 +1,4 @@
-
+#include "Python.h"
 /* Grammar subroutines needed by parser */
 
 #include "pgenheaders.h"
@@ -39,7 +39,7 @@ PyGrammar_LabelRepr(label *lb)
                return "EMPTY";
        else if (ISNONTERMINAL(lb->lb_type)) {
                if (lb->lb_str == NULL) {
-                       sprintf(buf, "NT%d", lb->lb_type);
+                       PyOS_snprintf(buf, sizeof(buf), "NT%d", lb->lb_type);
                        return buf;
                }
                else
@@ -49,8 +49,9 @@ PyGrammar_LabelRepr(label *lb)
                if (lb->lb_str == NULL)
                        return _PyParser_TokenNames[lb->lb_type];
                else {
-                       sprintf(buf, "%.32s(%.32s)",
-                               _PyParser_TokenNames[lb->lb_type], lb->lb_str);
+                       PyOS_snprintf(buf, sizeof(buf), "%.32s(%.32s)",
+                                     _PyParser_TokenNames[lb->lb_type],
+                                     lb->lb_str);
                        return buf;
                }
        }