Travis: cat failure logs, show core backtraces (fix #499)

.travis.yml

@@ -11,7 +11,7 @@ env:
 before_install:
     - if [ $TRAVIS_OS_NAME = linux ]; then sudo apt-get update -qq; fi
     - if [ $TRAVIS_OS_NAME = linux ]; then sudo apt-get install -qq bison comerr-dev flex libcap-ng-dev libdb-dev libedit-dev libjson-perl libldap2-dev libncurses5-dev libperl4-corelibs-perl libsqlite3-dev libkeyutils-dev pkg-config python ss-dev texinfo unzip netbase keyutils; fi
-    - if [ $TRAVIS_OS_NAME = linux ]; then sudo apt-get install -qq ldap-utils; fi
+    - if [ $TRAVIS_OS_NAME = linux ]; then sudo apt-get install -qq ldap-utils gdb; fi
     - if [ $TRAVIS_OS_NAME = osx ]; then brew update; fi
     - if [ $TRAVIS_OS_NAME = osx ]; then brew install cpanm bison flex berkeley-db lmdb openldap openssl; fi
     - if [ $TRAVIS_OS_NAME = osx ]; then sudo cpanm install JSON; fi
@@ -39,14 +39,20 @@ install:
       else
           ../configure --enable-maintainer-mode $COVERAGE
       fi
-    - make -j3
+    - ulimit -c unlimited; make -j3
 
 script:
-    - if [ x${COVERITY_SCAN_BRANCH} != x1 ]; then make check; fi
+    - if [ x${COVERITY_SCAN_BRANCH} != x1 ]; then ulimit -c unlimited; make check; fi
 
 after_script:
     - if [ -n "$COVERAGE" ]; then coveralls --gcov-options '\-lp'; fi
 
+after_failure:
+    - cat config.log
+    - find . -name "*.trs" -print0| xargs -0 grep -l '^:test-result: FAIL' | while read trs ; do echo FAILURE detected at $trs; cat ${trs%%.trs}.log ; done
+    - if [ $TRAVIS_OS_NAME = linux ]; then echo "thread apply all bt" > x; find . -name core -print0 | xargs -0 gdb -batch -x x `file core|sed -e "s/^[^']*'//" -e "s/[ '].*$//"` core; fi
+    - if [ $TRAVIS_OS_NAME = linux ]; then echo "thread apply all bt" > x; find . -name core.\* -print | while read gdb; do gdb -batch -x x `file "$core"|sed -e "s/^[^']*'//" -e "s/[ '].*$//"` "$core"; fi
+
 compiler:
     - clang
     - gcc