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doc: add description of new framepointer vet check
Update #43014 Change-Id: I5fbfaa16e6acb8859fd0b1188f532f5a225f6349 Reviewed-on: https://go-review.googlesource.com/c/go/+/276373 Trust: Keith Randall <khr@golang.org> Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
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@ -293,6 +293,18 @@ Do not send CLs removing the interior tags from such phrases.
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<!-- CL 235677: https://golang.org/cl/235677: cmd/vet: bring in pass to catch invalid uses of testing.T in goroutines -->
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<!-- CL 235677: https://golang.org/cl/235677: cmd/vet: bring in pass to catch invalid uses of testing.T in goroutines -->
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<p><!-- CL 248686, CL 276372 -->
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The vet tool now warns about amd64 assembly that clobbers the BP
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register (the frame pointer) without saving and restoring it,
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contrary to the calling convention. Code that doesn't preserve the
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BP register must be modified to either not use BP at all or preserve
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BP by saving and restoring it. An easy way to preserve BP is to set
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the frame size to a nonzero value, which causes the generated
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prologue and epilogue to preserve the BP register for you.
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See <a href="https://golang.org/cl/248260">CL 248260</a> for example
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fixes.
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</p>
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<h2 id="runtime">Runtime</h2>
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<h2 id="runtime">Runtime</h2>
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<p>
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<p>
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