[time] fix: guard timezone out buffer logging (#3668)

Original text, per the emailed patch:

---------------

Hello,

I am submitting a small fix to prevent an unintended abort when _GLIBCXX_ASSERTIONS is enabled, caused by out-of-bounds access in debug logging.
Background / Issue

In the server-side implementations of ITimeZoneService::ToPosixTime and ToPosixTimeWithMyRule, the SCOPE_EXIT debug logging previously accessed out_times[0] and out_times[1] unconditionally.

However, out_times is an IPC-provided output buffer (OutArray, which inherits from std::span). Its length depends on the caller-provided buffer capacity. During debugging, I encountered a case where out_times.size() == 1.

Under _GLIBCXX_ASSERTIONS, accessing out_times[1] triggers a std::span::operator[] assertion failure (std::__glibcxx_assert_fail) and aborts the process, causing the service thread to crash. This results in an unintended crash caused solely by debug logging.
Change Description

In the SCOPE_EXIT logging blocks of both ToPosixTime and ToPosixTimeWithMyRule, I added bounds checks before accessing out_times[0] and out_times[1]:

    Access out_times[0] only if out_times.size() > 0

    Access out_times[1] only if out_times.size() > 1

    Print 0 when the corresponding element is unavailable

This change only affects debug log output. It does not modify IPC semantics or the time conversion logic itself.
Reproduction Context (for reference)

I encountered this issue while running 13 Sentinels: Aegis Rim (title ID: 01008D7016438000). During the “Load Game” flow, ToPosixTimeWithMyRule is invoked with an out_times buffer of length 1, which previously led to the out-of-bounds access in the logging code.

Thank you for your time and review.

Best regards,
darkpaper

Environment: Arch Linux / KDE / X11

This email and the accompanying patch were prepared with assistance from
an LLM.

Authored-by: darkpaper <lirunzhou2021@gamil.com>
Signed-off-by: crueter <crueter@eden-emu.dev>

Co-authored-by: darkpaper <lirunzhou2021@gamil.com>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3668

src/core/hle/service/glue/time/time_zone.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -104,7 +107,8 @@ Result TimeZoneService::LoadLocationNameList(
     OutArray<Service::PSC::Time::LocationName, BufferAttr_HipcMapAlias> out_names, u32 index) {
     SCOPE_EXIT {
         LOG_DEBUG(Service_Time, "called. index={} out_count={} out_names[0]={} out_names[1]={}",
-                  index, *out_count, out_names[0], out_names[1]);
+                  index, *out_count, out_names.size() > 0 ? out_names[0] : Service::PSC::Time::LocationName{},
+                  out_names.size() > 1 ? out_names[1] : Service::PSC::Time::LocationName{});
     };
 
     std::scoped_lock l{m_mutex};
@@ -208,7 +212,8 @@ Result TimeZoneService::ToPosixTime(Out<u32> out_count,
     SCOPE_EXIT {
         LOG_DEBUG(Service_Time,
                   "called. calendar_time={} out_count={} out_times[0]={} out_times[1]={}",
-                  calendar_time, *out_count, out_times[0], out_times[1]);
+                  calendar_time, *out_count, out_times.size() > 0 ? out_times[0] : s64{0},
+                  out_times.size() > 1 ? out_times[1] : s64{0});
     };
 
     R_RETURN(m_wrapped_service->ToPosixTime(out_count, out_times, calendar_time, rule));
@@ -220,7 +225,8 @@ Result TimeZoneService::ToPosixTimeWithMyRule(
     SCOPE_EXIT {
         LOG_DEBUG(Service_Time,
                   "called. calendar_time={} out_count={} out_times[0]={} out_times[1]={}",
-                  calendar_time, *out_count, out_times[0], out_times[1]);
+                  calendar_time, *out_count, out_times.size() > 0 ? out_times[0] : s64{0},
+                  out_times.size() > 1 ? out_times[1] : s64{0});
     };
 
     R_RETURN(m_wrapped_service->ToPosixTimeWithMyRule(out_count, out_times, calendar_time));

src/core/hle/service/psc/time/time_zone_service.cpp

@@ -1,3 +1,6 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
 // SPDX-FileCopyrightText: Copyright 2023 yuzu Emulator Project
 // SPDX-License-Identifier: GPL-2.0-or-later
 
@@ -148,7 +151,8 @@ Result TimeZoneService::ToPosixTime(Out<u32> out_count,
     SCOPE_EXIT {
         LOG_DEBUG(Service_Time,
                   "called. calendar_time={} out_count={} out_times[0]={} out_times[1]={} ",
-                  calendar_time, *out_count, out_times[0], out_times[1]);
+                  calendar_time, *out_count, out_times.size() > 0 ? out_times[0] : s64{0},
+                  out_times.size() > 1 ? out_times[1] : s64{0});
     };
 
     R_RETURN(
@@ -161,7 +165,8 @@ Result TimeZoneService::ToPosixTimeWithMyRule(Out<u32> out_count,
     SCOPE_EXIT {
         LOG_DEBUG(Service_Time,
                   "called. calendar_time={} out_count={} out_times[0]={} out_times[1]={} ",
-                  calendar_time, *out_count, out_times[0], out_times[1]);
+                  calendar_time, *out_count, out_times.size() > 0 ? out_times[0] : s64{0},
+                  out_times.size() > 1 ? out_times[1] : s64{0});
     };
 
     R_RETURN(