# HG changeset patch
# User ehelin
# Date 1416836650 -3600
#      Mon Nov 24 14:44:10 2014 +0100
# Node ID 641d6ee4480b2237983b91ccecda17386e20a489
# Parent  6deb8f65a4145a5410617960dca08b1237605837
8065648: Remove the flag -fsanitize=undefined for GCC 4.9 and later

diff --git a/common/autoconf/flags.m4 b/common/autoconf/flags.m4
--- a/common/autoconf/flags.m4
+++ b/common/autoconf/flags.m4
@@ -343,20 +343,16 @@ AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAG
       ;;
     fastdebug )
       # no adjustment
       ;;
     slowdebug )
       # Add runtime stack smashing and undefined behavior checks
       CFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1"
       CXXFLAGS_DEBUG_OPTIONS="-fstack-protector-all --param ssp-buffer-size=1"
-      if test "x$HAS_CFLAG_DETECT_UNDEFINED_BEHAVIOR" = "xtrue"; then
-        CFLAGS_DEBUG_OPTIONS="$CFLAGS_DEBUG_OPTIONS  $CFLAG_DETECT_UNDEFINED_BEHAVIOR_FLAG"
-        CXXFLAGS_DEBUG_OPTIONS="$CXXFLAGS_DEBUG_OPTIONS $CFLAG_DETECT_UNDEFINED_BEHAVIsOR_FLAG"
-      fi
       ;;
     esac
   fi
   AC_SUBST(CFLAGS_DEBUG_OPTIONS)
   AC_SUBST(CXXFLAGS_DEBUG_OPTIONS)
 
   # Optimization levels
   if test "x$TOOLCHAIN_TYPE" = xsolstudio; then
@@ -741,35 +737,16 @@ AC_DEFUN_ONCE([FLAGS_SETUP_COMPILER_FLAG
           ;;
         esac
     fi
   elif test "x$TOOLCHAIN_TYPE" = xsolstudio; then
     LDFLAGS_JDK="$LDFLAGS_JDK -z defs -xildoff -ztext"
     LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK -norunpath -xnolib"
   fi
 
-  if test "x$TOOLCHAIN_TYPE" = xgcc || test "x$TOOLCHAIN_TYPE" = xclang; then
-    # If undefined behaviour detection is enabled then we need to tell linker.
-    case $DEBUG_LEVEL in
-      release | fastdebug )
-        ;;
-      slowdebug )
-        AC_MSG_WARN([$HAS_CFLAG_DETECT_UNDEFINED_BEHAVIOR])
-        if test "x$HAS_CFLAG_DETECT_UNDEFINED_BEHAVIOR" = "xtrue"; then
-          # enable undefined behaviour checking
-          LDFLAGS_JDK="$LDFLAGS_JDK `$ECHO -n $CFLAG_DETECT_UNDEFINED_BEHAVIOR_FLAG | sed -e "s/[ ]*\([^ ]\+\)/ -Xlinker \1/g"`"
-          LDFLAGS_CXX_JDK="$LDFLAGS_CXX_JDK `$ECHO -n $CFLAG_DETECT_UNDEFINED_BEHAVIOR_FLAG | sed -e "s/[ ]*\([^ ]\+\)/ -Xlinker \1/g"`"
-        fi
-        ;;
-      * )
-        AC_MSG_ERROR([Unrecognized \$DEBUG_LEVEL: $DEBUG_LEVEL])
-        ;;
-    esac
-  fi
-
   # Customize LDFLAGS for executables
 
   LDFLAGS_JDKEXE="${LDFLAGS_JDK}"
 
   if test "x$TOOLCHAIN_TYPE" = xmicrosoft; then
     if test "x$OPENJDK_TARGET_CPU_BITS" = "x64"; then
       LDFLAGS_STACK_SIZE=1048576
     else
diff --git a/common/autoconf/toolchain.m4 b/common/autoconf/toolchain.m4
--- a/common/autoconf/toolchain.m4
+++ b/common/autoconf/toolchain.m4
@@ -707,22 +707,16 @@ AC_DEFUN_ONCE([TOOLCHAIN_MISC_CHECKS],
     # This is later checked when setting flags.
 
     # "-Og" suppported for GCC 4.8 and later
     CFLAG_OPTIMIZE_DEBUG_FLAG="-Og"
     FLAGS_COMPILER_CHECK_ARGUMENTS([$CFLAG_OPTIMIZE_DEBUG_FLAG],
       [HAS_CFLAG_OPTIMIZE_DEBUG=true],
       [HAS_CFLAG_OPTIMIZE_DEBUG=false])
 
-    # "-fsanitize=undefined" supported for GCC 4.9 and later
-    CFLAG_DETECT_UNDEFINED_BEHAVIOR_FLAG="-fsanitize=undefined -fsanitize-recover"
-    FLAGS_COMPILER_CHECK_ARGUMENTS([$CFLAG_DETECT_UNDEFINED_BEHAVIOR_FLAG],
-      [HAS_CFLAG_DETECT_UNDEFINED_BEHAVIOR=true],
-      [HAS_CFLAG_DETECT_UNDEFINED_BEHAVIOR=false])
-
     # "-z relro" supported in GNU binutils 2.17 and later
     LINKER_RELRO_FLAG="-Xlinker -z -Xlinker relro"
     FLAGS_LINKER_CHECK_ARGUMENTS([$LINKER_RELRO_FLAG],
       [HAS_LINKER_RELRO=true],
       [HAS_LINKER_RELRO=false])
 
     # "-z now" supported in GNU binutils 2.11 and later
     LINKER_NOW_FLAG="-Xlinker -z -Xlinker now"