"double free or corruption" when trying to zoom in Song Editor, when there's a large sample loaded

[ExperiBass]

System Information

EndeavourOS (Arch Linux)

LMMS Version(s)

1.3.0-alpha.1.720+gada836c98

Most Recent Working Version

e0ae8a1ce (it's not happy, but it doesn't crash)

Bug Summary

When trying to zoom in the song editor, LMMS freezes and crashes with a "double free or corruption (!prev)". A project file + sample to reproduce is attached.

doin a bisect revealed 0363ee6d1 as the offending commit.

Expected Behaviour

LMMS shouldn't freeze and crash.

Steps To Reproduce

1. Load a long sample (the one im usin is 7m)
2. try to use the slider to zoom
3. behold, your wallpaper

Logs

double free or corruption (!prev)
[1]    111944 IOT instruction (core dumped)  lmms

Screenshots / Minimum Reproducible Project

longcrash.zip

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• [X] I have searched all existing issues and confirmed that this is not a duplicate.

[khoidauminh]

I have no idea why this happens but changing this line seems to have made the bug disappear

-       const size_t maxFrames = static_cast<size_t>(numPixels * framesPerPixel);
+       const size_t maxFrames = numPixels * static_cast<size_t>(framesPerPixel);