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Update changelog

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Kovid Goyal 2026-07-12 10:27:56 +05:30
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docs/changelog.rst
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@ -226,6 +226,8 @@ Detailed list of changes
- scroll-window remote control command: Fix a regression that broke scrolling by pages (:iss:`10253`)
- Bypass libc malloc for history buffer to avoid libc pool policies causing apparent memory leak (:pull:`10254`)
0.47.4 [2026-06-15]
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

2
kitty/history.c
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@ -25,6 +25,8 @@ add_segment(HistoryBuf *self, index_type num) {
const size_t segment_size = cpu_cells_size + gpu_cells_size + SEGMENT_SIZE * sizeof(LineAttrs);
if (num > SIZE_MAX / segment_size) fatal("History buffer segment allocation is too large");
const size_t mmap_size = num * segment_size;
// We use mmap to avoid fragmentation in libc malloc pool, see
// https://github.com/kovidgoyal/kitty/pull/10254
char *mem = mmap(NULL, mmap_size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);
if (mem == MAP_FAILED) fatal("Out of memory allocating new history buffer segment");
char *needs_free = mem;