How do I confirm a memory leak?

Check whether memory usage grows over a session without stabilizing (via profiling) and whether out-of-memory crashes cluster after extended play (via captured crashes), both are signatures of a leak, distinguishing it from a fixed-footprint memory problem. Confirming a memory leak means verifying the defining behavior: memory that grows unbounded over time rather than settling at a stable footprint. Two complementary checks. First, profile over a long session: run the game (ideally in a scenario that exercises the suspected leak) and watch memory usage over an extended period, a leak shows as memory steadily growing and never stabilizing (rising over the session), whereas a healthy game's memory settles at a footprint (rising to a level and staying there). If memory keeps climbing during play without leveling off, that's a leak, the clearest confirmation. A short test won't show it (the slow growth needs time), so profile over a long session. Second, check the crash pattern: a leak crashes the game when memory finally exceeds the limit, which takes time, so out-of-memory crashes from a leak cluster after extended play (late in sessions), not immediately. Check your captured out-of-memory crashes, if they happen after long sessions (rather than at launch or regardless of session length), that's the leak signature, distinguishing a leak from a fixed-footprint problem (which crashes based on device memory regardless of session length, often early on low-memory devices). Both checks together, growing memory in profiling and late-session out-of-memory crashes, confirm a leak. So you confirm a memory leak by profiling for memory growing without stabilizing over a session and checking whether out-of-memory crashes cluster after extended play. Bugnet captures out-of-memory crashes with memory context and breadcrumbs, so you can see whether they cluster after extended play (the leak signature, late-session crashes) versus immediately or on low-memory devices (a footprint issue), confirming a leak from the crash pattern, which combined with your profiling (showing memory growth) verifies the leak, so you know it's real before investing in finding and fixing it.

How do I find a memory leak in my game?

Profile memory over a long session to see it growing, then identify what's being allocated and not freed, the objects, resources, or references that accumulate, using memory profiling tools to find what keeps growing. Finding a memory leak means locating what's being allocated and not released, causing the unbounded growth. The approach: profile memory over time (run the game over an extended session, ideally exercising the area you suspect leaks, and watch memory grow, confirming the leak and giving you a scenario to investigate), then use memory profiling tools to find what's accumulating (memory profilers, your engine's memory tools, can show you what's in memory and what's growing, the objects, resources, allocations, or references that increase over the session and aren't freed, take memory snapshots at intervals and compare to see what's accumulating). Common leak sources to look for: objects created but never destroyed (entities, instances that accumulate), event subscriptions or references not removed (a common leak, something holds a reference preventing cleanup), resources/assets loaded but not unloaded (textures, audio, data kept in memory), collections that grow without bound (lists, caches that keep adding without removing), and circular references or retained closures (preventing garbage collection in managed-memory engines). The profiler showing what's growing points you to the culprit, then you examine the code to see why it's not being freed. For managed-memory engines, look for what's keeping objects alive (references preventing GC). The key is the profiling: the leak is whatever keeps growing in memory, and profiling over a long session reveals it, while comparing snapshots pinpoints the accumulating objects. So you find a memory leak by profiling memory over a long session to see it growing and identifying what's being allocated and not freed (via memory profiling tools showing what accumulates). Bugnet complements this by capturing the out-of-memory crashes the leak causes with memory context (confirming the leak's impact and the conditions, late-session crashes), so you know the leak is real and worth the profiling effort, and after you find and fix it (via profiling), Bugnet verifies the out-of-memory crashes dropped in the field, while the profiling tools do the in-memory work of locating what's leaking, together confirming, locating, and verifying the fix for the leak.

How do I fix a memory leak?

Free what's being allocated and not released, identified by profiling, release objects when done, remove references and event subscriptions, unload unused resources, and clear growing collections, then verify memory stabilizes and out-of-memory crashes drop. Fixing a memory leak means making the leaked memory get freed, addressing whatever you found is accumulating (from profiling). The fix depends on the leak's cause, but common ones: release objects when done (destroy or dispose of objects, entities, and instances you no longer need, so they're freed rather than accumulating), remove references and event subscriptions (a frequent leak, an object stays in memory because something holds a reference, often an event subscription or callback, so unsubscribe from events and clear references when done, allowing the object to be freed/collected), unload unused resources (unload textures, audio, and assets you're no longer using, rather than keeping them in memory), clear growing collections (if a list, cache, or collection grows without bound, remove items you no longer need, bound the size, or clear it appropriately), and break retaining references (in managed-memory engines, ensure nothing keeps leaked objects alive preventing garbage collection, break circular references, clear static references, dispose of retained closures). After fixing, verify the leak is gone: profile over a long session to confirm memory now stabilizes (rises to a footprint and stays, rather than growing unbounded), the direct confirmation the leak is fixed, and check the field, that the out-of-memory crashes (especially late-session ones) dropped on the fixed build, confirming the fix resolved the leak for real players. The key is that fixing a leak means ensuring the accumulating memory gets freed, which you address based on what the profiling showed is leaking, then verify both that memory stabilizes (profiling) and that the out-of-memory crashes stopped (field). So you fix a memory leak by freeing what's being allocated and not released (releasing objects, removing references/subscriptions, unloading resources, clearing collections, based on profiling), then verifying memory stabilizes and out-of-memory crashes drop. Bugnet tracks the out-of-memory crashes per version, so after fixing the leak you can confirm they dropped (especially the late-session crashes the leak caused), verifying in the field that the leak fix worked for real players, complementing your profiling that confirms memory now stabilizes, together confirming the leak is genuinely resolved.

What to Do When You Suspect a Memory Leak

Quick answer: Confirm it by checking whether memory usage grows over a session without stabilizing and whether out-of-memory crashes cluster after extended play, then profile to find what's allocated and not freed, fix the leak, and verify memory stabilizes.

Suspecting a memory leak, where memory grows unbounded until the game crashes, is the first step, confirming it and finding what's leaking is the work. Here is what to do when you suspect a memory leak.

Confirm the Leak From the Crash Pattern

Confirm the suspicion: a memory leak shows as out-of-memory crashes that cluster after extended play (memory grew over the session until it ran out), rather than immediately. Check whether your out-of-memory crashes happen late in sessions, the signature of a leak, distinguishing it from a fixed-footprint memory problem.

Bugnet captures crashes with memory context and breadcrumbs, so you can see whether out-of-memory crashes cluster after extended play, the leak signature. Crashes happening late in sessions (after memory grew) rather than immediately confirm a leak (versus a footprint issue that crashes regardless of session length), so the captured pattern confirms your suspicion.

Profile to Find What's Not Being Freed

Find the leak: profile memory over a long session to see usage growing without stabilizing, and identify what's being allocated and not freed, the objects, resources, or references accumulating. The leak is whatever keeps growing, profiling reveals it.

Bugnet's captured crash context (memory, the conditions) helps confirm the leak's impact and where it bites, complementing your profiling. While profiling tools locate what's leaking in memory, the captured crashes confirm the out-of-memory impact and the conditions (long sessions), so you know the leak is real and worth fixing, focusing your profiling on the confirmed problem.

Fix the Leak and Verify Memory Stabilizes

Fix the leak, free what's not being freed (release objects when done, clear references, dispose of resources), then verify memory stabilizes over a session and out-of-memory crashes drop. Confirm both that memory no longer grows unbounded (profiling) and that the out-of-memory crashes stopped in the field (per version).

Bugnet tracks crashes per version, so after fixing the leak you can confirm the out-of-memory crashes dropped, especially the late-session ones. This verifies the fix in the field, the leak's out-of-memory crashes gone on the fixed build, confirming the leak is resolved for real players, complementing your local profiling that confirms memory now stabilizes.

When you suspect a memory leak, confirm it from the crash pattern (out-of-memory crashes clustering after extended play) and profiling (memory growing without stabilizing), profile to find what's not being freed, fix the leak, and verify memory stabilizes and out-of-memory crashes drop. A leak shows as unbounded growth and late-session crashes.