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Header maps are binary files used by Xcode, which are used to map
header names or paths to other locations. Clang has support for
those since its inception, but there's not a lot of header map
testing around.
Since it's a binary format, testing becomes pretty much brittle
and its hard to even know what's inside if you don't have the
appropriate tools.
Add a python based tool that allows creating and dumping header
maps based on a json description of those. While here, rewrite
tests to use the tool and remove the binary files from the tree.
This tool was initially written by Daniel Dunbar.
Thanks to Stella Stamenova for helping make this work on Windows.
Differential Revision: https://reviews.llvm.org/D46485
rdar://problem/39994722
llvm-svn: 335295
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This reverts commit fcfa2dd517ec1a6045a81e8247e346d630a22618.
Broke bots:
http://lab.llvm.org:8011/builders/clang-x64-ninja-win7/builds/11315
http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/10411/steps/test-check-all/logs/stdio
llvm-svn: 335196
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Header maps are binary files used by Xcode, which are used to map
header names or paths to other locations. Clang has support for
those since its inception, but there's not a lot of header map
testing around.
Since it's a binary format, testing becomes pretty much brittle
and its hard to even know what's inside if you don't have the
appropriate tools.
Add a python based tool that allows creating and dumping header
maps based on a json description of those. While here, rewrite
tests to use the tool and remove the binary files from the tree.
This tool was initially written by Daniel Dunbar.
Differential Revision: https://reviews.llvm.org/D46485
rdar://problem/39994722
llvm-svn: 335177
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contents than the header file by the same name under the system header
search root. Surprisingly, this is required to get the test to pass on
some systems.
So, it turns out that there exist filesystems in the world which unique
the inode of all files based on their contents. This results in two
files with the same contents at different paths suddenly having the same
inode. This doesn't actually cause any problems in practice as the
contents are the same, and the path used to access the files are the
same. However, it can cause tests like this one to be more brittle
because the file manager ends up de-duplicating the file entries by
inode. We don't have any other really easy ways to observe the behavior
shift because the whole point is that the #include written in the source
code doesn't contain the information -- instead it is contained in the
header map.
If folks have other solutions they would prefer, I'm more than happy to
work on them, but this seems a reasonable way to ensure that the test in
question exercises the code it wants to exercise.
llvm-svn: 205149
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LookupFileCacheInfo when we reset the start point.
rdar://16462455
llvm-svn: 205071
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