RFR: 8047952 : (s) Remove FORTIFY_SOURCE from fastdebug and slowdebug builds

[Kim Barrett]

On Aug 8, 2014, at 8:23 PM, Mike Duigou <mike.duigou at oracle.com> wrote:
> 
> Hello all;
> 
> A previous version of this changeset was focused on disabling FORTIFY_SOURCE only for specific files with optimization disabled. This version entirely disables FORTIFY_SOURCE for all portions of the build. After additional problems; incompatibility of FORTIFY_SOURCE with -O0, lack of consistent support for FORTIFY_SOURCE in some distributions of glibc, etc. this seems like the best course. Should the separate issues with -Od be resolved then FORTIFY_SOURCE could be re-enabled selectively for specific platforms.
> 
> webrev: http://cr.openjdk.java.net/~mduigou/JDK-8047952/1/webrev/
> jbsbug: https://bugs.openjdk.java.net/browse/JDK-8047952
> 
> Mike

In common/autoconf/flags.m4:

 339   if test "x$TOOLCHAIN_TYPE" = xgcc; then
 340     case $DEBUG_LEVEL in
 341     release )
 342     fastdebug )
 343       # no adjustment
 344       ;;

The bash documentation I'm looking at says each clause must end with
";;", and makes no mention of any sort of fall-through from one clause
to the next.

  "... the ')' operator terminates a pattern list. A list of patterns
  and an associated command-list is known as a clause. Each clause
  must be terminated with ';;'"

It's not clear from that description what should happen for line 341.