mirror of https://github.com/golang/go.git
069f9fb205
A section with uninitialized data contains no bytes and occupies no space in the file. This change makes it return an error on reading from this section so that it will force the caller to check for a section with uninitialized data. This is the debug/pe version of CL 429601. This will break programs that expect a byte slice with the length described by the SizeOfRawData field. There are two reasons to introduce this breaking change: 1) uninitialized data is uninitialized and there is no reason to allocate memory for it; 2) it could result in an OOM if the file is corrupted and has a large invalid SizeOfRawData. No test case because the problem can only happen for invalid data. Let the fuzzer find cases like this. For #47653 Fixes #59817 Change-Id: I1ae94e9508f803b37926275d9a571f724a09af9f Reviewed-on: https://go-review.googlesource.com/c/go/+/488475 Reviewed-by: Bryan Mills <bcmills@google.com> Reviewed-by: kortschak <dan@kortschak.io> Reviewed-by: Alex Brainman <alex.brainman@gmail.com> Reviewed-by: Ian Lance Taylor <iant@google.com> TryBot-Result: Gopher Robot <gobot@golang.org> Run-TryBot: Ian Lance Taylor <iant@golang.org> Run-TryBot: Ian Lance Taylor <iant@google.com> Auto-Submit: Ian Lance Taylor <iant@google.com> |
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