[PATCH] Fix memory leak in python.c:do_start_initialization
Philipp Rudo
prudo@linux.vnet.ibm.com
Wed Mar 22 13:11:00 GMT 2017
When intializing Python the path to the python binary is build the
following way
progname = concat (ldirname (python_libdir), SLASH_STRING, "bin",
SLASH_STRING, "python", (char *) NULL);
This is problematic as both concat and ldirname allocate memory for the
string they return. Thus the memory allocated by ldirname cannot be
accessed afterwards causing a memory leak. Fix it by temporarily storing
libdir in a variable and xfree it after concat.
gdb/ChangeLog:
python/python.c (do_start_initialization): Fix memory leak.
---
gdb/python/python.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/gdb/python/python.c b/gdb/python/python.c
index 73fb3d0..6b16613 100644
--- a/gdb/python/python.c
+++ b/gdb/python/python.c
@@ -1535,7 +1535,7 @@ extern initialize_file_ftype _initialize_python;
static bool
do_start_initialization ()
{
- char *progname;
+ char *progname, *libdir;
#ifdef IS_PY3K
int i;
size_t progsize, count;
@@ -1550,8 +1550,10 @@ do_start_initialization ()
/foo/bin/python
/foo/lib/pythonX.Y/...
This must be done before calling Py_Initialize. */
- progname = concat (ldirname (python_libdir), SLASH_STRING, "bin",
+ libdir = ldirname (python_libdir);
+ progname = concat (libdir, SLASH_STRING, "bin",
SLASH_STRING, "python", (char *) NULL);
+ xfree (libdir);
#ifdef IS_PY3K
oldloc = xstrdup (setlocale (LC_ALL, NULL));
setlocale (LC_ALL, "");
--
2.8.4
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