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libstdc++ testing using DejaGnu

From: George Kraft
Subject: libstdc++ testing using DejaGnu
Date: 28 Oct 2003 13:02:47 -0600

Recently I downloaded GCC 3.3.2 and ran the libstdc++ tests.  I've
observed the number of libstdc++ tests have increased about 450%!  I
have some questions regarding the new testsuite which use the DejaGnu
test harness.

1) What is the libstc++ testsuite code coverage? What are the goals? The
LSB has calculated that there are about 3602 C++ ABIs.

2) Is there an easy way to build the tests so the binary images can be
packaged up to run on other machines?  I would like to run the same
binary images on a various systems to help prove binary compatibility.

2b) In /usr/share/dejagnu/dg.exp I wanted to pass -keep-output to
dg-test, but I could not figure it out so I hard coded it. :-)

*** dg.exp      2003-10-22 13:50:15.000000000 -0500
--- dg.exp.orig 2003-10-17 12:55:11.000000000 -0500
*** 615,621 ****
      global srcdir             ;# eg: /calvin/dje/build/gcc/./testsuite/
      global host_triplet target_triplet
!     set keep 1
      set i 0
      if { [string index [lindex $args 0] 0] == "-" } {
--- 615,621 ----
      global srcdir             ;# eg: /calvin/dje/build/gcc/./testsuite/
      global host_triplet target_triplet
!     set keep 0
      set i 0
      if { [string index [lindex $args 0] 0] == "-" } {

2c) The above "keep" hack kept dejagnu from removing the runtime images;
however, the object files are left in the toplevel directory and many of
the test files have the same name, so a large number of the images are
overwritten and lost.  So what I did was rename all of the test
filenames, then rebuilt and reran the tests.

        find * -name "*.cc" -print | while read file; do
                new=$(echo $file | sed -e 's/\//_/g')
                dir=$(dirname $file)
                cp $file $dir/keep-$new

3) How can I get DejaGnu to run binary images that I have created above
and not try to build the tests from source?

George (gk4)

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