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doc: describe change to eliminate method expression wrappers from stack traces

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Change-Id: I824b42a1c1fdcee8712681ffc6316470761be065
Reviewed-on: https://go-review.googlesource.com/c/159858
Reviewed-by: Ian Lance Taylor <iant@golang.org>
This commit is contained in:
Keith Randall 2019-01-22 13:44:32 -08:00 committed by Keith Randall
parent 447965d4e0
commit c53aecaaea
1 changed files with 17 additions and 0 deletions
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doc/go1.12.html
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@ -232,6 +232,23 @@ for {
</pre>
</p>
<p><!-- CL 153477 -->
Wrappers generated by the compiler to implement method expressions
are no longer reported
by <a href="/pkg/runtime/#CallersFrames"><code>runtime.CallersFrames</code></a>
and <a href="/pkg/runtime/#Stack"><code>runtime.Stack</code></a>. They
are also not printed in panic stack traces.
This change aligns the <code>gc</code> toolchain to match
the <code>gccgo</code> toolchain, which already elided such wrappers
from stack traces.
Clients of these APIs might need to adjust for the missing
frames. For code that must interoperate between 1.11 and 1.12
releases, you can replace the method expression <code>x.M</code>
with the function literal <code>func (...) { x.M(...) } </code>.
</p>
<p><!-- CL 144340 -->
The compiler now accepts a <code>-lang</code> flag to set the Go language
version to use. For example, <code>-lang=go1.8</code> causes the compiler to