make/hotspot/lib/CompileJvm.gmk

*** 1,7 ****
  #
! # Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved.
  # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  #
  # This code is free software; you can redistribute it and/or modify it
  # under the terms of the GNU General Public License version 2 only, as
  # published by the Free Software Foundation.  Oracle designates this
--- 1,7 ----
  #
! # Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
  # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  #
  # This code is free software; you can redistribute it and/or modify it
  # under the terms of the GNU General Public License version 2 only, as
  # published by the Free Software Foundation.  Oracle designates this
*** 268,272 ****
--- 268,331 ----
  # defined after the above call to BUILD_LIBJVM. Mapfile will be generated
  # after all object files are built, but before the jvm library is linked.
  include lib/JvmMapfile.gmk
  
  TARGETS += $(BUILD_LIBJVM)
+ 
+ ################################################################################
+ # Hotspot disallows the use of global operators 'new' and 'delete'. This build
+ # time check helps enforce this requirement. If you trigger this check and the
+ # reference is not obvious from the source, GNU objdump can be used to help find
+ # the reference if compiled with GCC:
+ #
+ # objdump -lrdSC <path/to/file.o>
+ #
+ # -C demangle
+ # -d disassemble
+ # -r print relocation entries, interspersed with the disassembly
+ # -S print source code, intermixed with disassembly
+ # -l include filenames and line numbers
+ #
+ # Search the output for the operator(s) of interest, to see where they are
+ # referenced.
+ 
+ ifneq ($(filter $(TOOLCHAIN_TYPE), gcc clang solstudio), )
+ 
+   DEMANGLED_REGEXP := [^:]operator (new|delete)
+ 
+   # Running c++filt to find offending symbols in all files is too expensive,
+   # especially on Solaris, so use mangled names when looking for symbols.
+   # Save the demangling for when something is actually found.
+   ifeq ($(TOOLCHAIN_TYPE), solstudio)
+     MANGLED_SYMS := \
+         __1c2n6FL_pv_ \
+         __1c2N6FL_pv_ \
+         __1c2k6Fpv_v_ \
+         __1c2K6Fpv_v_ \
+         #
+     UNDEF_PATTERN := UNDEF
+   else
+     MANGLED_SYMS := \
+         _ZdaPv \
+         _ZdlPv \
+         _Znam \
+         _Znwm \
+         #
+     UNDEF_PATTERN := ' U '
+   endif
+ 
+   define SetupOperatorNewDeleteCheck
+     $1.op_check: $1
+         if [ -n "`$(NM) $$< | $(GREP) $(addprefix -e , $(MANGLED_SYMS)) \
+             | $(GREP) $(UNDEF_PATTERN)`" ]; then \
+           $(ECHO) "$$<: Error: Use of global operators new and delete is not allowed in Hotspot:"; \
+           $(NM) $$< | $(CXXFILT) | $(EGREP) '$(DEMANGLED_REGEXP)' | $(GREP) $(UNDEF_PATTERN); \
+           $(ECHO) "See: $(TOPDIR)/make/hotspot/lib/CompileJvm.gmk"; \
+           exit 1; \
+         fi
+         $(TOUCH) $$@
+ 
+     TARGETS += $1.op_check
+   endef
+ 
+   $(foreach o, $(BUILD_LIBJVM_ALL_OBJS), $(eval $(call SetupOperatorNewDeleteCheck,$o)))
+ endif