Fix current_zone not working on buildroot+glibc target - refs #846

The layout for timezones, on these targets, is `/usr/share/zoneinfo/posix/Europe/Paris` instead of `/usr/share/zoneinfo/Europe/Paris`. `/usr/share/zoneinfo/Europe/Paris` exists and is a symlink to `/usr/share/zoneinfo/posix/Europe/Paris`. `/etc/localtime` correctly links to `/usr/share/zoneinfo/Europe/Paris`, so `readlink` must be used instead of `realpath`. Signed-off-by: Julien Blanc <[email protected]>
HowardHinnant · Oct 2, 2024 · dd8affc · dd8affc
1 parent 510a054
commit dd8affc
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/tz.cpp b/src/tz.cpp
@@ -4187,6 +4187,8 @@ sniff_realpath(const char* timezone)
     if (rp.get() == nullptr)
         throw system_error(errno, system_category(), "realpath() failed");
     auto result = extract_tz_name(rp.get());
+    if (result.find("posix") == 0)
+        return false;
     return result != "posixrules";
 }