From fd3ba736db19d4c7cd928f3735329339a8c8ef47 Mon Sep 17 00:00:00 2001 From: Tom Tromey Date: Sat, 15 Sep 2018 00:29:20 -0600 Subject: [PATCH] Check for negative argument in Type.template_argument typy_template_argument did not check if the template argument was non-negative. A negative value could cause a gdb crash. 2018-09-23 Tom Tromey PR python/17284: * python/py-type.c (typy_template_argument): Check for negative argument number. gdb/testsuite/ChangeLog 2018-09-23 Tom Tromey PR python/17284: * gdb.python/py-template.exp (test_template_arg): Add test for negative template argument number. --- gdb/ChangeLog | 6 ++++++ gdb/python/py-type.c | 7 +++++++ gdb/testsuite/ChangeLog | 6 ++++++ gdb/testsuite/gdb.python/py-template.exp | 4 ++++ 4 files changed, 23 insertions(+) diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 15ae55a..f887159 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,11 @@ 2018-09-23 Tom Tromey + PR python/17284: + * python/py-type.c (typy_template_argument): Check for negative + argument number. + +2018-09-23 Tom Tromey + PR python/14062: * python/python.c (gdbpy_run_events): Do not ignore exceptions. diff --git a/gdb/python/py-type.c b/gdb/python/py-type.c index c7cad2e..897ad93 100644 --- a/gdb/python/py-type.c +++ b/gdb/python/py-type.c @@ -930,6 +930,13 @@ typy_template_argument (PyObject *self, PyObject *args) if (! PyArg_ParseTuple (args, "i|O", &argno, &block_obj)) return NULL; + if (argno < 0) + { + PyErr_SetString (PyExc_RuntimeError, + _("Template argument number must be non-negative")); + return NULL; + } + if (block_obj) { block = block_object_to_block (block_obj); diff --git a/gdb/testsuite/ChangeLog b/gdb/testsuite/ChangeLog index 131940b..4a624dd 100644 --- a/gdb/testsuite/ChangeLog +++ b/gdb/testsuite/ChangeLog @@ -1,5 +1,11 @@ 2018-09-23 Tom Tromey + PR python/17284: + * gdb.python/py-template.exp (test_template_arg): Add test for + negative template argument number. + +2018-09-23 Tom Tromey + PR python/14062: * gdb.python/python.exp: Add test for post_event error. diff --git a/gdb/testsuite/gdb.python/py-template.exp b/gdb/testsuite/gdb.python/py-template.exp index 793e68d..96383a7 100644 --- a/gdb/testsuite/gdb.python/py-template.exp +++ b/gdb/testsuite/gdb.python/py-template.exp @@ -54,6 +54,10 @@ proc test_template_arg {exefile type} { # Replace '*' with '\*' in regex. regsub -all {\*} $type {\*} t gdb_test "python print (foo.type.template_argument(0))" $t $type + + gdb_test "python print(foo.type.template_argument(-1))" \ + "Template argument number must be non-negative\r\nError while executing Python code." \ + "negative template argument number" } test_template_arg "${binfile}-ci" "const int" -- 2.7.4