[PATCH 2/5] plugin:python: check asprintf() errors

[Federico Vaga]

The code was validating the string but the man page for asprintf(3)
says clearly:

--------
If memory allocation wasn't possible, or some other error occurs,
these functions  will return -1, and the contents of strp are undefined.
--------

So, we cannot really rely on the returned string pointer.

Signed-off-by: Federico Vaga <federico.v...@vaga.pv.it>
---
 plugin_python.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/plugin_python.c b/plugin_python.c
index d3da8b0..2997679 100644
--- a/plugin_python.c
+++ b/plugin_python.c
@@ -24,6 +24,7 @@ static int load_plugin(struct pevent *pevent, const char 
*path,
                        const char *name, void *data)
 {
        PyObject *globals = data;
+       int err;
        int len = strlen(path) + strlen(name) + 2;
        int nlen = strlen(name) + 1;
        char *full = malloc(len);
@@ -41,9 +42,9 @@ static int load_plugin(struct pevent *pevent, const char 
*path,
        strcpy(n, name);
        n[nlen - 4] = '\0';
 
-       asprintf(&load, pyload, full, n);
-       if (!load)
-               return -ENOMEM;
+       err = asprintf(&load, pyload, full, n);
+       if (err < 0)
+               return err;
 
        res = PyRun_String(load, Py_file_input, globals, globals);
        if (!res) {
-- 
2.9.3