tree 5425685e6711288d4603b76a9d4cde3aa2d878da
parent a4e7a7a5235f415eea5515b49121ec79a95b78ad
author pcloudy <pcloudy@google.com> 1566469273 -0700
committer John Cater <jcater@google.com> 1566570341 -0400

Fix PatchUtil for parsing special patch format

`diff` generate incomplete header for adding or removing one line file.
Eg.
"""
--- foo
+++ bar
@@ -1 +0,0 @@  # Should be @@ -1,1 +0,0 @@
-hello, world
"""

We set the default value to 1 when the size info is missing.
Similar logic in `git apply` implementation:
https://github.com/git/git/blob/5fa0f5238b0cd46cfe7f6fa76c3f526ea98148d9/apply.c#L1400

Fixes https://github.com/bazelbuild/bazel/issues/9222

RELNOTES: None
PiperOrigin-RevId: 264799477