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-rw-r--r--getconf/getconf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/getconf/getconf.c b/getconf/getconf.c
index 0f2b5d0..7c789dd 100644
--- a/getconf/getconf.c
+++ b/getconf/getconf.c
@@ -389,7 +389,7 @@ int do_system_var(char *environment, char *system_var)
{
int var;
- if(strlen(environment) != 0)
+ if(environment && strlen(environment) != 0)
{
fprintf(stderr, "Unsupported environment: %s\n", environment);
return EINVAL;