Description

Environment:
libvips 8.17.0
govips (Go binding)
Production server environment

Issue:

When using vips.LoadThumbnailFromBuffer() with vips.InterestingAll and vips.SizeBoth parameters, the following error occurs consistently in production:

smartcrop: arg "width" changed during build, VipsSmartcrop (smartcrop), extract an area from an image, smartcrop input=((VipsImage*) 0x1a6794c0) attention-x=0 out=((VipsImage*) 0x1a1d6e10) attention-y=0 width=600 height=400 interesting=((VipsInteresting) VIPS_INTERESTING_ALL)

Observations:

Only occurs with InterestingAll + SizeBoth combination
Other all combinations work fine
Cannot reproduce in local test environment
Occurs consistently in production server environment

Question:

What specific aspect of the smartcrop implementation should we investigate when this "arg width(or height) changed during build" error occurs? Is this related to memory management, thread safety, or parameter validation in the smartcrop operation?