Bryan C. Mills 3c4c10ea8c misc/cgo: fix aliasing bugs in parallel tests that append to shared slices ... These tests use a slice to represent the base C compiler command (with flags). Appending to that slice can cause subtle aliasing bugs, such as commands that silently corrupt the arguments of other concurrent commands in parallel tests. In this change, we explicitly reduce the capacity of the command slice to force appends to it to always allocate unique new slices. Fixes #49693 Change-Id: Ide466bf65f12cb6cead3dcba69f513cccb60a160 Reviewed-on: https://go-review.googlesource.com/c/go/+/383754 Trust: Bryan Mills <bcmills@google.com> Run-TryBot: Bryan Mills <bcmills@google.com> Reviewed-by: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gopher Robot <gobot@golang.org>		2022-02-07 17:51:57 +00:00
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