tree b497a162a0f60ea3101d84d678662ab6ff8bf672
parent bf9104d5825d9f62b59106d69edebb1b5bdd48da
author Tom Sepez <tsepez@chromium.org> 1490912903 -0700
committer Chromium commit bot <commit-bot@chromium.org> 1490914856 +0000

vswprintf() part 2: retry when clearly out of space.

Use vendor guidance if possible.
Otherwise, avoid allocating N^2 storage for N wide chars.
Update tests to account for strings removed from helper.

Change-Id: I38bbaf936656fb43ec1ae33652da4cabde00247a
Reviewed-on: https://pdfium-review.googlesource.com/3433
Commit-Queue: Tom Sepez <tsepez@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>