[PATCH v3 3/4] test-lib: make $GIT_BUILD_DIR an absolute path

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Change the GIT_BUILD_DIR from a path like "/path/to/build/t/.." to
"/path/to/build". The "TEST_DIRECTORY" here is already made an
absolute path a few lines above this.

We could simply do $(cd "$TEST_DIRECTORY"/.." && pwd) here, but as
noted in the preceding commit the "$TEST_DIRECTORY" can't be anything
except the path containing this test-lib.sh file at this point, so we
can more cheaply and equally strip the "/t" off the end.

This change will be helpful to LSAN_OPTIONS which will want to strip
the build directory path from filenames, which we couldn't do if we
had a "/.." in there.

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@xxxxxxxxx>
---
 t/test-lib.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/t/test-lib.sh b/t/test-lib.sh
index 77c3fabd041..ff13321bfd3 100644
--- a/t/test-lib.sh
+++ b/t/test-lib.sh
@@ -41,7 +41,7 @@ then
 	# elsewhere
 	TEST_OUTPUT_DIRECTORY=$TEST_DIRECTORY
 fi
-GIT_BUILD_DIR="$TEST_DIRECTORY"/..
+GIT_BUILD_DIR="${TEST_DIRECTORY%/t}"
 
 # Prepend a string to a VAR using an arbitrary ":" delimiter, not
 # adding the delimiter if VAR or VALUE is empty. I.e. a generalized:
@@ -59,6 +59,7 @@ prepend_var () {
 # problems. The GIT_SAN_OPTIONS variable can be used to set common
 # defaults shared between [AL]SAN_OPTIONS.
 prepend_var GIT_SAN_OPTIONS : abort_on_error=1
+prepend_var GIT_SAN_OPTIONS : strip_path_prefix=\"$GIT_BUILD_DIR/\"
 
 # If we were built with ASAN, it may complain about leaks
 # of program-lifetime variables. Disable it by default to lower
-- 
2.35.1.1132.ga1fe46f8690




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