[PATCH v3 1/2] config: verify that the config file is not null

[Alex DAMIAN]

From: Alexandru DAMIAN <alexandru.damian at intel.com>

weston_config_parse may return NULL,
leading to an ungraceful exit via SIGSEGV if we
try to reference the structure.

Adding a check in weston_config_full_path so that
we return the empty file /dev/null as filename
if we started without a config file.

Signed-off-by: Alexandru DAMIAN <alexandru.damian at intel.com>
---
 shared/config-parser.c | 2 +-
 src/compositor.c       | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/shared/config-parser.c b/shared/config-parser.c
index e1bf212..ef5c5b9 100644
--- a/shared/config-parser.c
+++ b/shared/config-parser.c
@@ -385,7 +385,7 @@ weston_config_parse(const char *name)
 const char *
 weston_config_get_full_path(struct weston_config *config)
 {
-	return config->path;
+	return config == NULL ? "/dev/null" : config->path;
 }
 
 int
1.8.1.2