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authorNick Mathewson <nickm@torproject.org>2018-05-14 18:04:10 -0400
committerNick Mathewson <nickm@torproject.org>2018-05-14 18:04:10 -0400
commitdb94d7fed246e617fe953751a8f506f9b57c2fda (patch)
treefc65da46fdff17b98d0779e89968efc95ba94ca1
parentaab626405c312a33d521c9ca3729552fd9ccca2e (diff)
downloadtor-db94d7fed246e617fe953751a8f506f9b57c2fda.tar.gz
tor-db94d7fed246e617fe953751a8f506f9b57c2fda.zip
Update cov-diff to handle new gcov, and remove timestamps
The new gcov sometimes emits *s if there is a line containing multiple basic blocks, and some are not executed. (The gcov documentation says something weird about this point, so I'm trying to interpret it into the compilerese that I'm familiar with.) That's bug 26101. Also, when we're looking for unique variations in our coverage, we would like cov-diff to suppress timestamps on the diffs. That's bug 26102. Both of these are bugfixes on 0.2.5.1-alpha when the cov-diff script was introduced. My apologies for the perl.
-rw-r--r--changes/bug26101_261025
-rwxr-xr-xscripts/test/cov-diff6
2 files changed, 8 insertions, 3 deletions
diff --git a/changes/bug26101_26102 b/changes/bug26101_26102
new file mode 100644
index 0000000000..bc3bc84b2c
--- /dev/null
+++ b/changes/bug26101_26102
@@ -0,0 +1,5 @@
+ o Minor bugfixes (test coverage tools):
+ - Update our "cov-diff" script to handle output from the latest
+ version of gcov, and to remove extraneous timestamp information
+ from its output. Fixes bugs 26101 and 26102; bugfix on
+ 0.2.5.1-alpha. \ No newline at end of file
diff --git a/scripts/test/cov-diff b/scripts/test/cov-diff
index ed8874d2d3..6179dff63e 100755
--- a/scripts/test/cov-diff
+++ b/scripts/test/cov-diff
@@ -10,12 +10,12 @@ DIRB="$2"
for B in $DIRB/*; do
A=$DIRA/`basename $B`
if [ -f $A ]; then
- perl -pe 's/^\s*\!*\d+:/ 1:/; s/^([^:]+:)[\d\s]+:/$1/; s/^ *-:(Runs|Programs):.*//;' "$A" > "$A.tmp"
+ perl -pe 's/^\s*\!*\d+(\*?):/ 1$1:/; s/^([^:]+:)[\d\s]+:/$1/; s/^ *-:(Runs|Programs):.*//;' "$A" > "$A.tmp"
else
cat /dev/null > "$A.tmp"
fi
- perl -pe 's/^\s*\!*\d+:/ 1:/; s/^([^:]+:)[\d\s]+:/$1/; s/^ *-:(Runs|Programs):.*//;' "$B" > "$B.tmp"
- diff -u "$A.tmp" "$B.tmp"
+ perl -pe 's/^\s*\!*\d+(\*?):/ 1$1:/; s/^([^:]+:)[\d\s]+:/$1/; s/^ *-:(Runs|Programs):.*//;' "$B" > "$B.tmp"
+ diff -u "$A.tmp" "$B.tmp" |perl -pe 's/^((?:\+\+\+|---)(?:.*tmp))\s+.*/$1/;'
rm "$A.tmp" "$B.tmp"
done