[llvm-cov] Do not allow ".." to escape the coverage sub-directory
In -output-dir mode, file reports are placed into a "coverage"
directory. If filenames in the coverage mapping contain "..", they might
escape out of this directory.
Fix the problem by removing ".." from source filenames (expand the path
component).
llvm-svn: 274135
diff --git a/llvm/test/tools/llvm-cov/Inputs/double_dots.proftext b/llvm/test/tools/llvm-cov/Inputs/double_dots.proftext
new file mode 100644
index 0000000..5419d23
--- /dev/null
+++ b/llvm/test/tools/llvm-cov/Inputs/double_dots.proftext
@@ -0,0 +1,8 @@
+main
+# Func Hash:
+0
+# Num Counters:
+1
+# Counter Values:
+1
+