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fix(vim.json): loss of precision on integers >14 digits #34876

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Problem: multiple DAP servers keep assuming they can have internal IDs
         up to 2**52, which get corrupted by the Neovim JSON encoder.
Solution: change (1) constant and add a test so nobody breaks it while
          updating the library.

Fixes: https://github.com/neovim/neovim/issues/24532
Fixes: https://github.com/mfussenegger/nvim-dap/issues/1534
Fixes: https://github.com/facebook/buck2/issues/1032
(cherry picked from commit 7a69fefdb9)
This commit is contained in:
jade
2025-07-10 19:07:56 -07:00
committed by github-actions[bot]
parent 6f8efea940
commit f9f0345eba
2 changed files with 3 additions and 1 deletions
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2
test/functional/lua/json_spec.lua
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@@ -77,6 +77,7 @@ describe('vim.json.decode()', function()
eq(-100000, exec_lua([[return vim.json.decode(' -100000 ')]]))
eq(0, exec_lua([[return vim.json.decode('0')]]))
eq(0, exec_lua([[return vim.json.decode('-0')]]))
eq(3053700806959403, exec_lua([[return vim.json.decode('3053700806959403')]]))
end)
it('parses floating-point numbers', function()
@@ -208,6 +209,7 @@ describe('vim.json.encode()', function()
end)
it('dumps floats', function()
eq('3053700806959403', exec_lua([[return vim.json.encode(3053700806959403)]]))
eq('10.5', exec_lua([[return vim.json.encode(10.5)]]))
eq('-10.5', exec_lua([[return vim.json.encode(-10.5)]]))
eq('-1e-05', exec_lua([[return vim.json.encode(-1e-5)]]))