mirror of https://github.com/golang/go.git
30311e8860
Due to some recent optimizations related to the compare instruction, DS-form load instructions started to be used to load 8-byte go.strings. This can cause link time errors if the go.string is not aligned to 4 bytes. For DS-form instructions, the value in the offset field must be a multiple of 4. If the offset is known at the time the rules are processed, a DS-form load will not be chosen. But for go.strings, the offset is not known at that time, but a relocation is generated indicating that the linker should fill in the DS relocation. When the linker tries to fill in the relocation, if the offset is not aligned properly, a link error will occur. To fix this, when loading a go.string using MOVDload, the full address of the go.string is generated and loaded into the base register. Then the go.string is loaded with a 0 offset field. Added a testcase that reproduces this problem. Fixes #24799 Change-Id: I6a154e8e1cba64eae290be0fbcb608b75884ecdd Reviewed-on: https://go-review.googlesource.com/107855 Run-TryBot: Lynn Boger <laboger@linux.vnet.ibm.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: David Chase <drchase@google.com> |
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| 64bit.go | ||
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| README.md | ||
| alg.go | ||
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| utf.go | ||
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README.md
The test directory contains tests of the Go tool chain and runtime. It includes black box tests, regression tests, and error output tests. They are run as part of all.bash.
To run just these tests, execute:
../bin/go run run.go
Standard library tests should be written as regular Go tests in the appropriate package.
The tool chain and runtime also have regular Go tests in their packages. The main reasons to add a new test to this directory are:
- it is most naturally expressed using the test runner; or
- it is also applicable to
gccgoand other Go tool chains.