mermaid: Fix stack overflow when laying out deeply nested subgraphs (#58325) (cherry-pick to preview)#58396
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…58325) Closes FR-49 This PR fixes stack overflow in flowcharts with deeply nested subgraphs. Rewrote recursive call to iterate with an explicit stack on heap. Added test which reproduces the overflow. We use our fork now, with patch on existing v0.4.0: zed-industries/merman@1c765dc Release Notes: - Fixed a crash in when rendering Mermaid diagram flowcharts with deeply nested subgraphs.
This was referenced Jun 3, 2026
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Cherry-pick of #58325 to preview
Closes FR-49
This PR fixes stack overflow in flowcharts with deeply nested subgraphs.
Rewrote recursive call to iterate with an explicit stack on heap. Added
test which reproduces the overflow.
We use our fork now, with patch on existing v0.4.0:
zed-industries/merman@1c765dc
Release Notes:
nested subgraphs.