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Put in some explicit null-pointer checks.

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I think these were not strictly necessary, since passing a null
pointer to access(2) would have resulted in EINVAL rather than a
segfault. But it's clearer to put them in (and keeps static checkers a
bit happier).
This commit is contained in:
Simon Tatham 2017-02-14 20:47:16 +00:00
parent bda87b39e4
commit 2247065d0f
1 changed files with 2 additions and 2 deletions
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4
unix/uxstore.c
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@ -140,11 +140,11 @@ static char *make_filename(int index, const char *subname)
} }
old_dir3 = dupstr("/.putty"); old_dir3 = dupstr("/.putty");
if (access(old_dir, F_OK) == 0) { if (old_dir && access(old_dir, F_OK) == 0) {
ret = old_dir; ret = old_dir;
goto out; goto out;
} }
if (access(old_dir2, F_OK) == 0) { if (old_dir2 && access(old_dir2, F_OK) == 0) {
ret = old_dir2; ret = old_dir2;
goto out; goto out;
} }