[3.15] gh-149430: Fix edge-cases in profiling.sampling outputs (GH-149431)#149602
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pablogsal merged 1 commit intopython:3.15from May 9, 2026
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[3.15] gh-149430: Fix edge-cases in profiling.sampling outputs (GH-149431)#149602pablogsal merged 1 commit intopython:3.15from
profiling.sampling outputs (GH-149431)#149602pablogsal merged 1 commit intopython:3.15from
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…onGH-149431) The line highlights on the heatmap are driven by the URL hash and the `:target` selector. When clicking a caller/callee link for the line that was already selected, the hash doesn't change, so the browser keeps the existing target state and doesn't restart the animation. Due to this the highlight only works the first time. With this fix, line navigation goes through JavaScript. If the target URL already points to the current location, the highlight is replayed by clearing the animation, forcing style recalculation, and restoring it. The `baseline_self` variable isn't initialized for structural elided roots. This variable is accessed later unconditionally and leads to a crash. The child process ends up being invoked with `--diff_flamegraph` instead of the correct argument. (cherry picked from commit 9587726) Co-authored-by: László Kiss Kollár <kiss.kollar.laszlo@gmail.com>
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The line highlights on the heatmap are driven by the URL hash and the
:targetselector. When clicking a caller/callee link for the line thatwas already selected, the hash doesn't change, so the browser keeps the
existing target state and doesn't restart the animation. Due to this the
highlight only works the first time.
With this fix, line navigation goes through JavaScript. If the target
URL already points to the current location, the highlight is replayed by
clearing the animation, forcing style recalculation, and restoring it.
The
baseline_selfvariable isn't initialized for structural elidedroots. This variable is accessed later unconditionally and leads to a
crash.
The child process ends up being invoked with
--diff_flamegraphinsteadof the correct argument.
(cherry picked from commit 9587726)
Co-authored-by: László Kiss Kollár kiss.kollar.laszlo@gmail.com
profiling.samplingvisualisation outputs have edge-case failures #149430