tree d4944f74e00963c9293510d699df25d22b8ba9c8
parent b75e4b96a6ba9bdee2ea61219cb132b8f1c279e8
author Antonio Maiorano <amaiorano@google.com> 1628010779 +0000
committer Tint LUCI CQ <tint-scoped@luci-project-accounts.iam.gserviceaccount.com> 1628010779 +0000

HexFoat: detect exponent overflow and report errors

Make ParserImp::const_literal() bubble up any error by the tokenizer.
These were being ignored.

Also:
* Detect and report significand too large
* Detect and report missing exponent
* Fix invalid mantissa overflow detection for fractional trailing zeroes
* Fix zero with non-zero exponent triggering an assert, and instead,
make the result zero (added tests for this).

Bug: chromium:1235132
Bug: tint:77
Change-Id: I364a4c944121a2c55ff3161de1bb50126c8a5526
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/60680
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Commit-Queue: Antonio Maiorano <amaiorano@google.com>