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authorDaniel Friesel <derf@finalrewind.org>2020-12-05 21:28:11 +0100
committerDaniel Friesel <derf@finalrewind.org>2020-12-05 22:00:45 +0100
commitd473ac13e7b70e8ad7a009a0f8c6d793934d03f1 (patch)
treea18702ab9080abc888ff48a0b2111b98c5e71dc7 /src/utils.h
parent35f60444fe55fa4717ac784931b3cb7455f7a369 (diff)
free accompanying EXIF data when freeing an image
This fixes two memory bugs that only manifest with exif=1 and long-running slideshows. * when feh loads an image, it writes exif data to file->ed. Previously, this data was never free'd, causing a memory leak on subsequent loads of the same file. * As file->ed is never free'd, the accumulated EXIF data consumes a significant amount of memory over time. with slideshow-delay = 10 and two days of runtime, feh may exceed 1 GB of memory usage. If the slideshow is so large that feh does not encounter the same image twice in this time, this is not detected as a memory leak, as each EXIF data chunk is referenced from the filelist. See <https://github.com/derf/feh/issues/553> for details. Closes #553
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