diff options
| author | Antonin Décimo <antonin.decimo@gmail.com> | 2020-06-04 14:41:22 +0200 |
|---|---|---|
| committer | Tudor Brindus <me@tbrindus.ca> | 2020-07-30 22:02:42 -0400 |
| commit | a1c6052383d382d978ca597dc5fb280c0343db60 (patch) | |
| tree | ce81e5b63303a0c141cbcd4b96a82fc8e06331bf | |
| parent | 2960b2c9b6c77d42f2696c1997bda965594e5dd4 (diff) | |
Log empty value if envvar is not defined
If the environment variable is not defined, getenv returns NULL.
Passing a NULL pointer to the "%s" format specifier is undefined
behavior. Even if some implementations output "(null)", an empty
string is nicer.
| -rw-r--r-- | sway/main.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sway/main.c b/sway/main.c index d893654f..57716071 100644 --- a/sway/main.c +++ b/sway/main.c @@ -138,7 +138,8 @@ static void log_env(void) { "SWAYSOCK", }; for (size_t i = 0; i < sizeof(log_vars) / sizeof(char *); ++i) { - sway_log(SWAY_INFO, "%s=%s", log_vars[i], getenv(log_vars[i])); + char *value = getenv(log_vars[i]); + sway_log(SWAY_INFO, "%s=%s", log_vars[i], value != NULL ? value : ""); } } |