Fix VS ARM64-related issues with time and source location

CHANGELOG.md

@@ -5,6 +5,12 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v7.0.1] - February 22, 2026
+
+### Fixed
+
+- Fixed a crash on ARM64 Windows where `va_start` corrupted the `time` field in a log event, causing an assertion failure inside `strftime()`.
+
 ## [v7.0.0] - October 23, 2025
 
 > 🚨 **BREAKING CHANGES**: Complete API redesign from v6.5.0. This is a major architectural overhaul with new type system, function names, and build configuration.

src/ulog.c

@@ -1797,8 +1797,11 @@ void ulog_log(ulog_level level, const char *file, int line, const char *topic,
     }
 
     ulog_event ev = {0};
-    log_fill_event(&ev, message, level, file, line, topic_id);
     va_start(ev.message_format_args, message);
+
+    // IMPORTANT: filling the events should be after the vs_start for compatibility
+    // with the VS ARM64 compiler behavior
+    log_fill_event(&ev, message, level, file, line, topic_id);
 
     prefix_update(&ev);
 

version

@@ -1 +1 @@
-7.0.0
+7.0.1