Sync libiberty with upstream GCC.

include/ChangeLog
	* libiberty.h (PEX_STDOUT_APPEND): New flag.
	(PEX_STDERR_APPEND): Likewise.

	* demangle.h (DMGL_DLANG): New macro.
	(DMGL_STYLE_MASK): Add DMGL_DLANG.
	(demangling_styles): Add dlang_demangling.
	(DLANG_DEMANGLING_STYLE_STRING): New macro.
	(DLANG_DEMANGLING): New macro.
	(dlang_demangle): New prototype.

	* longlong.h: Add __udiv_w_sdiv prototype.

libiberty/ChangeLog
	* cp-demangle.c (d_substitution): Handle abi tags on abbreviation.

	* pex-common.h (struct pex_funcs): Add new parameter for open_write field.
	* pex-unix.c (pex_unix_open_write): Add support for new parameter.
	* pex-djgpp.c (pex_djgpp_open_write): Likewise.
	* pex-win32.c (pex_win32_open_write): Likewise.
	* pex-common.c (pex_run_in_environment): Likewise.

	* Makefile.in (CFILES): Add d-demangle.c.
	(REQUIRED_OFILES): Add d-demangle.o.
	* cplus-dem.c (libiberty_demanglers): Add dlang_demangling case.
	(cplus_demangle): Likewise.
	* d-demangle.c: New file.
	* testsuite/Makefile.in (really-check): Add check-d-demangle.
	* testsuite/d-demangle-expected: New file.

	* simple-object-elf.c (simple_object_elf_write_ehdr): Correctly
	handle objects with more than SHN_LORESERVE sections.
	(simple_object_elf_write_shdr): Add sh_link parameter.
	(simple_object_elf_write_to_file): Correctly handle objects with
	more than SHN_LORESERVE sections.

	* cp-demangle.c (d_dump): Only access field from s_fixed part of
	the union for DEMANGLE_COMPONENT_FIXED_TYPE.
	(d_count_templates_scopes): Likewise.

	* testsuite/demangler-fuzzer.c: New file.
	* testsuite/Makefile.in (fuzz-demangler): New rule.
	(demangler-fuzzer): Likewise.
	(mostlyclean): Clean up demangler fuzzer.

4 files changed, 1065 insertions, 1 deletions

diff --git a/libiberty/testsuite/Makefile.in b/libiberty/testsuite/Makefile.in
index 69ac1f5105e..bb2db67fb66 100644
--- a/libiberty/testsuite/Makefile.in
+++ b/libiberty/testsuite/Makefile.in
@@ -45,12 +45,15 @@ all:
 # CHECK is set to "really_check" or the empty string by configure.
 check: @CHECK@
 
-really-check: check-cplus-dem check-pexecute check-expandargv
+really-check: check-cplus-dem check-d-demangle check-pexecute check-expandargv
 
 # Run some tests of the demangler.
 check-cplus-dem: test-demangle $(srcdir)/demangle-expected
 	./test-demangle < $(srcdir)/demangle-expected
 
+check-d-demangle: test-demangle $(srcdir)/d-demangle-expected
+	./test-demangle < $(srcdir)/d-demangle-expected
+
 # Check the pexecute code.
 check-pexecute: test-pexecute
 	./test-pexecute
@@ -59,6 +62,10 @@ check-pexecute: test-pexecute
 check-expandargv: test-expandargv
 	./test-expandargv
 
+# Run the demangler fuzzer
+fuzz-demangler: demangler-fuzzer
+	./demangler-fuzzer
+
 TEST_COMPILE = $(CC) @DEFS@ $(LIBCFLAGS) -I.. -I$(INCDIR) $(HDEFINES)
 test-demangle: $(srcdir)/test-demangle.c ../libiberty.a
 	$(TEST_COMPILE) -o test-demangle \
@@ -72,6 +79,10 @@ test-expandargv: $(srcdir)/test-expandargv.c ../libiberty.a
 	$(TEST_COMPILE) -DHAVE_CONFIG_H -I.. -o test-expandargv \
 		$(srcdir)/test-expandargv.c ../libiberty.a
 
+demangler-fuzzer: $(srcdir)/demangler-fuzzer.c ../libiberty.a
+	$(TEST_COMPILE) -o demangler-fuzzer \
+		$(srcdir)/demangler-fuzzer.c ../libiberty.a
+
 # Standard (either GNU or Cygnus) rules we don't use.
 html install-html info install-info clean-info dvi pdf install-pdf \
 install etags tags installcheck:
@@ -81,6 +92,7 @@ mostlyclean:
 	rm -f test-demangle
 	rm -f test-pexecute
 	rm -f test-expandargv
+	rm -f demangler-fuzzer
 	rm -f core
 clean: mostlyclean
 distclean: clean
diff --git a/libiberty/testsuite/d-demangle-expected b/libiberty/testsuite/d-demangle-expected
new file mode 100644
index 00000000000..2aeacb8389f
--- /dev/null
+++ b/libiberty/testsuite/d-demangle-expected
@@ -0,0 +1,936 @@
+# This file holds test cases for the D demangler.
+# Each test case looks like this:
+#  options
+#  input to be demangled
+#  expected output
+#
+# See demangle-expected for documentation of supported options.
+#
+# A line starting with `#' is ignored.
+# However, blank lines in this file are NOT ignored.
+#
+############
+#
+# Coverage Tests
+#
+--format=dlang
+_Dmain
+D main
+#
+--format=dlang
+_D8demangle4testPFLAiYi
+demangle.test
+#
+--format=dlang
+_D8demangle4testFaZv
+demangle.test(char)
+#
+--format=dlang
+_D8demangle4testFbZv
+demangle.test(bool)
+#
+--format=dlang
+_D8demangle4testFcZv
+demangle.test(creal)
+#
+--format=dlang
+_D8demangle4testFdZv
+demangle.test(double)
+#
+--format=dlang
+_D8demangle4testFeZv
+demangle.test(real)
+#
+--format=dlang
+_D8demangle4testFfZv
+demangle.test(float)
+#
+--format=dlang
+_D8demangle4testFgZv
+demangle.test(byte)
+#
+--format=dlang
+_D8demangle4testFhZv
+demangle.test(ubyte)
+#
+--format=dlang
+_D8demangle4testFiZv
+demangle.test(int)
+#
+--format=dlang
+_D8demangle4testFjZv
+demangle.test(ireal)
+#
+--format=dlang
+_D8demangle4testFkZv
+demangle.test(uint)
+#
+--format=dlang
+_D8demangle4testFlZv
+demangle.test(long)
+#
+--format=dlang
+_D8demangle4testFmZv
+demangle.test(ulong)
+#
+--format=dlang
+_D8demangle4testFnZv
+demangle.test(none)
+#
+--format=dlang
+_D8demangle4testFoZv
+demangle.test(ifloat)
+#
+--format=dlang
+_D8demangle4testFpZv
+demangle.test(idouble)
+#
+--format=dlang
+_D8demangle4testFqZv
+demangle.test(cfloat)
+#
+--format=dlang
+_D8demangle4testFrZv
+demangle.test(cdouble)
+#
+--format=dlang
+_D8demangle4testFsZv
+demangle.test(short)
+#
+--format=dlang
+_D8demangle4testFtZv
+demangle.test(ushort)
+#
+--format=dlang
+_D8demangle4testFuZv
+demangle.test(wchar)
+#
+--format=dlang
+_D8demangle4testFvZv
+demangle.test(void)
+#
+--format=dlang
+_D8demangle4testFwZv
+demangle.test(dchar)
+#
+--format=dlang
+_D8demangle4testFOaZv
+demangle.test(shared(char))
+#
+--format=dlang
+_D8demangle4testFxaZv
+demangle.test(const(char))
+#
+--format=dlang
+_D8demangle4testFyaZv
+demangle.test(immutable(char))
+#
+--format=dlang
+_D8demangle4testFNgaZv
+demangle.test(inout(char))
+#
+--format=dlang
+_D8demangle4testFOxaZv
+demangle.test(shared(const(char)))
+#
+--format=dlang
+_D8demangle4testFONgaZv
+demangle.test(shared(inout(char)))
+#
+--format=dlang
+_D8demangle4testFAaZv
+demangle.test(char[])
+#
+--format=dlang
+_D8demangle4testFAAaZv
+demangle.test(char[][])
+#
+--format=dlang
+_D8demangle4testFAAAaZv
+demangle.test(char[][][])
+#
+--format=dlang
+_D8demangle4testFG42aZv
+demangle.test(char[42])
+#
+--format=dlang
+_D8demangle4testFG42G42aZv
+demangle.test(char[42][42])
+#
+--format=dlang
+_D8demangle4testFG42G42G42aZv
+demangle.test(char[42][42][42])
+#
+--format=dlang
+_D8demangle4testFG1234567890aZv
+demangle.test(char[1234567890])
+#
+--format=dlang
+_D8demangle4testFHaaZv
+demangle.test(char[char])
+#
+--format=dlang
+_D8demangle4testFHHaaaZv
+demangle.test(char[char[char]])
+#
+--format=dlang
+_D8demangle4testFPaZv
+demangle.test(char*)
+#
+--format=dlang
+_D8demangle4testFPPaZv
+demangle.test(char**)
+#
+--format=dlang
+_D8demangle4testFPPPaZv
+demangle.test(char***)
+#
+--format=dlang
+_D8demangle4testFNhG8gZv
+demangle.test(__vector(byte[8]))
+#
+--format=dlang
+_D8demangle4testFNhG16gZv
+demangle.test(__vector(byte[16]))
+#
+--format=dlang
+_D8demangle4testFNhG32gZv
+demangle.test(__vector(byte[32]))
+#
+--format=dlang
+_D8demangle4testFNhG4sZv
+demangle.test(__vector(short[4]))
+#
+--format=dlang
+_D8demangle4testFNhG8sZv
+demangle.test(__vector(short[8]))
+#
+--format=dlang
+_D8demangle4testFNhG16sZv
+demangle.test(__vector(short[16]))
+#
+--format=dlang
+_D8demangle4testFNhG2iZv
+demangle.test(__vector(int[2]))
+#
+--format=dlang
+_D8demangle4testFNhG4iZv
+demangle.test(__vector(int[4]))
+#
+--format=dlang
+_D8demangle4testFNhG8iZv
+demangle.test(__vector(int[8]))
+#
+--format=dlang
+_D8demangle4testFNhG1lZv
+demangle.test(__vector(long[1]))
+#
+--format=dlang
+_D8demangle4testFNhG2lZv
+demangle.test(__vector(long[2]))
+#
+--format=dlang
+_D8demangle4testFNhG4lZv
+demangle.test(__vector(long[4]))
+#
+--format=dlang
+_D8demangle4testFNhG2fZv
+demangle.test(__vector(float[2]))
+#
+--format=dlang
+_D8demangle4testFNhG4fZv
+demangle.test(__vector(float[4]))
+#
+--format=dlang
+_D8demangle4testFNhG8fZv
+demangle.test(__vector(float[8]))
+#
+--format=dlang
+_D8demangle4testFNhG1dZv
+demangle.test(__vector(double[1]))
+#
+--format=dlang
+_D8demangle4testFNhG2dZv
+demangle.test(__vector(double[2]))
+#
+--format=dlang
+_D8demangle4testFNhG4dZv
+demangle.test(__vector(double[4]))
+#
+--format=dlang
+_D8demangle4testFI5identZv
+demangle.test(ident)
+#
+--format=dlang
+_D8demangle4testFI5ident4testZv
+demangle.test(ident.test)
+#
+--format=dlang
+_D8demangle4testFC5classZv
+demangle.test(class)
+#
+--format=dlang
+_D8demangle4testFC5class4testZv
+demangle.test(class.test)
+#
+--format=dlang
+_D8demangle4testFS6structZv
+demangle.test(struct)
+#
+--format=dlang
+_D8demangle4testFS6struct4testZv
+demangle.test(struct.test)
+#
+--format=dlang
+_D8demangle4testFE4enumZv
+demangle.test(enum)
+#
+--format=dlang
+_D8demangle4testFE4enum4testZv
+demangle.test(enum.test)
+#
+--format=dlang
+_D8demangle4testFT7typedefZv
+demangle.test(typedef)
+#
+--format=dlang
+_D8demangle4testFT7typedef4testZv
+demangle.test(typedef.test)
+#
+--format=dlang
+_D8demangle4testFJaZv
+demangle.test(out char)
+#
+--format=dlang
+_D8demangle4testFKaZv
+demangle.test(ref char)
+#
+--format=dlang
+_D8demangle4testFLaZv
+demangle.test(lazy char)
+#
+--format=dlang
+_D8demangle4testFMaZv
+demangle.test(scope char)
+#
+--format=dlang
+_D8demangle4testFaXv
+demangle.test(char...)
+#
+--format=dlang
+_D8demangle4testFaYv
+demangle.test(char, ...)
+#
+--format=dlang
+_D8demangle4testFaaYv
+demangle.test(char, char, ...)
+#
+--format=dlang
+_D8demangle4testFaaZv
+demangle.test(char, char)
+#
+--format=dlang
+_D8demangle4testFB0Zv
+demangle.test(Tuple!())
+#
+--format=dlang
+_D8demangle4testFB1aZv
+demangle.test(Tuple!(char))
+#
+--format=dlang
+_D8demangle4testFB2aaZv
+demangle.test(Tuple!(char, char))
+#
+--format=dlang
+_D8demangle4testFB3aaaZv
+demangle.test(Tuple!(char, char, char))
+#
+--format=dlang
+_D8demangle4testFB2OaaZv
+demangle.test(Tuple!(shared(char), char))
+#
+--format=dlang
+_D8demangle4testFB3aDFZaaZv
+demangle.test(Tuple!(char, char() delegate, char))
+#
+--format=dlang
+_D8demangle4testFDFZaZv
+demangle.test(char() delegate)
+#
+--format=dlang
+_D8demangle4testFDUZaZv
+demangle.test(extern(C) char() delegate)
+#
+--format=dlang
+_D8demangle4testFDWZaZv
+demangle.test(extern(Windows) char() delegate)
+#
+--format=dlang
+_D8demangle4testFDVZaZv
+demangle.test(extern(Pascal) char() delegate)
+#
+--format=dlang
+_D8demangle4testFDRZaZv
+demangle.test(extern(C++) char() delegate)
+#
+--format=dlang
+_D8demangle4testFFZaZv
+demangle.test(char() function)
+#
+--format=dlang
+_D8demangle4testFUZaZv
+demangle.test(extern(C) char() function)
+#
+--format=dlang
+_D8demangle4testFWZaZv
+demangle.test(extern(Windows) char() function)
+#
+--format=dlang
+_D8demangle4testFVZaZv
+demangle.test(extern(Pascal) char() function)
+#
+--format=dlang
+_D8demangle4testFRZaZv
+demangle.test(extern(C++) char() function)
+#
+--format=dlang
+_D8demangle4testFDFNaZaZv
+demangle.test(char() pure delegate)
+#
+--format=dlang
+_D8demangle4testFDFNbZaZv
+demangle.test(char() nothrow delegate)
+#
+--format=dlang
+_D8demangle4testFDFNcZaZv
+demangle.test(char() ref delegate)
+#
+--format=dlang
+_D8demangle4testFDFNdZaZv
+demangle.test(char() @property delegate)
+#
+--format=dlang
+_D8demangle4testFDFNeZaZv
+demangle.test(char() @trusted delegate)
+#
+--format=dlang
+_D8demangle4testFDFNfZaZv
+demangle.test(char() @safe delegate)
+#
+--format=dlang
+_D8demangle4testFDFNiZaZv
+demangle.test(char() @nogc delegate)
+#
+--format=dlang
+_D8demangle4testFDFNaNbZaZv
+demangle.test(char() pure nothrow delegate)
+#
+--format=dlang
+_D8demangle4testFDFNbNaZaZv
+demangle.test(char() nothrow pure delegate)
+#
+--format=dlang
+_D8demangle4testFDFNdNfNaZaZv
+demangle.test(char() @property @safe pure delegate)
+#
+--format=dlang
+_D8demangle4testFFNaZaZv
+demangle.test(char() pure function)
+#
+--format=dlang
+_D8demangle4testFFNbZaZv
+demangle.test(char() nothrow function)
+#
+--format=dlang
+_D8demangle4testFFNcZaZv
+demangle.test(char() ref function)
+#
+--format=dlang
+_D8demangle4testFFNdZaZv
+demangle.test(char() @property function)
+#
+--format=dlang
+_D8demangle4testFFNeZaZv
+demangle.test(char() @trusted function)
+#
+--format=dlang
+_D8demangle4testFFNfZaZv
+demangle.test(char() @safe function)
+#
+--format=dlang
+_D8demangle4testFFNiZaZv
+demangle.test(char() @nogc function)
+#
+--format=dlang
+_D8demangle4testFFNaNbZaZv
+demangle.test(char() pure nothrow function)
+#
+--format=dlang
+_D8demangle4testFFNbNaZaZv
+demangle.test(char() nothrow pure function)
+#
+--format=dlang
+_D8demangle4testFFNdNfNaZaZv
+demangle.test(char() @property @safe pure function)
+#
+--format=dlang
+_D8demangle4test6__initZ
+demangle.test.init$
+#
+--format=dlang
+_D8demangle4test6__vtblZ
+vtable for demangle.test
+#
+--format=dlang
+_D8demangle4test7__ClassZ
+ClassInfo for demangle.test
+#
+--format=dlang
+_D8demangle4test11__InterfaceZ
+Interface for demangle.test
+#
+--format=dlang
+_D8demangle4test12__ModuleInfoZ
+ModuleInfo for demangle.test
+#
+--format=dlang
+_D8demangle4test6__ctorMFZv
+demangle.test.this()
+#
+--format=dlang
+_D8demangle4test6__dtorMFZv
+demangle.test.~this()
+#
+--format=dlang
+_D8demangle4test6__postblitMFZv
+demangle.test.this(this)
+#
+--format=dlang
+_D8demangle4testFHAbaZv
+demangle.test(char[bool[]])
+#
+--format=dlang
+_D8demangle4testFHG42caZv
+demangle.test(char[creal[42]])
+#
+--format=dlang
+_D8demangle4testFAiXv
+demangle.test(int[]...)
+#
+--format=dlang
+_D8demangle4testFLAiXv
+demangle.test(lazy int[]...)
+#
+--format=dlang
+_D8demangle4testFAiYv
+demangle.test(int[], ...)
+#
+--format=dlang
+_D8demangle4testFLAiYv
+demangle.test(lazy int[], ...)
+#
+--format=dlang
+_D8demangle4testFLilZv
+demangle.test(lazy int, long)
+#
+--format=dlang
+_D8demangle4testFLliZv
+demangle.test(lazy long, int)
+#
+--format=dlang
+_D8demangle4testFLC6ObjectLDFLiZiZi
+demangle.test(lazy Object, lazy int(lazy int) delegate)
+#
+--format=dlang
+_D8demangle9__T4testZv
+demangle.test!()
+#
+--format=dlang
+_D8demangle11__T4testTaZv
+demangle.test!(char)
+#
+--format=dlang
+_D8demangle13__T4testTaTaZv
+demangle.test!(char, char)
+#
+--format=dlang
+_D8demangle15__T4testTaTaTaZv
+demangle.test!(char, char, char)
+#
+--format=dlang
+_D8demangle16__T4testTaTOiTaZv
+demangle.test!(char, shared(int), char)
+#
+--format=dlang
+_D8demangle17__T4testS6symbolZv
+demangle.test!(symbol)
+#
+--format=dlang
+_D8demangle21__T4testS6symbol3fooZv
+demangle.test!(symbol.foo)
+#
+--format=dlang
+_D8demangle25__T4testS6symbol3foo3barZv
+demangle.test!(symbol.foo.bar)
+#
+--format=dlang
+_D8demangle19__T4testTaS6symbolZv
+demangle.test!(char, symbol)
+#
+--format=dlang
+_D8demangle19__T4testS6symbolTaZv
+demangle.test!(symbol, char)
+#
+--format=dlang
+_D8demangle13__T4testVPinZv
+demangle.test!(null)
+#
+--format=dlang
+_D8demangle14__T4testVg123Zv
+demangle.test!(123)
+#
+--format=dlang
+_D8demangle14__T4testVi123Zv
+demangle.test!(123)
+#
+--format=dlang
+_D8demangle14__T4testVs123Zv
+demangle.test!(123)
+#
+--format=dlang
+_D8demangle14__T4testVh123Zv
+demangle.test!(123u)
+#
+--format=dlang
+_D8demangle14__T4testVk123Zv
+demangle.test!(123u)
+#
+--format=dlang
+_D8demangle14__T4testVt123Zv
+demangle.test!(123u)
+#
+--format=dlang
+_D8demangle14__T4testVl123Zv
+demangle.test!(123L)
+#
+--format=dlang
+_D8demangle14__T4testVm123Zv
+demangle.test!(123uL)
+#
+--format=dlang
+_D8demangle15__T4testViN123Zv
+demangle.test!(-123)
+#
+--format=dlang
+_D8demangle15__T4testVkN123Zv
+demangle.test!(-123u)
+#
+--format=dlang
+_D8demangle15__T4testVlN123Zv
+demangle.test!(-123L)
+#
+--format=dlang
+_D8demangle15__T4testVmN123Zv
+demangle.test!(-123uL)
+#
+--format=dlang
+_D8demangle12__T4testVb1Zv
+demangle.test!(true)
+#
+--format=dlang
+_D8demangle12__T4testVb0Zv
+demangle.test!(false)
+#
+--format=dlang
+_D8demangle13__T4testVa10Zv
+demangle.test!('\x0a')
+#
+--format=dlang
+_D8demangle13__T4testVa32Zv
+demangle.test!(' ')
+#
+--format=dlang
+_D8demangle13__T4testVa65Zv
+demangle.test!('A')
+#
+--format=dlang
+_D8demangle14__T4testVa126Zv
+demangle.test!('~')
+#
+--format=dlang
+_D8demangle15__T4testVu1000Zv
+demangle.test!('\u03e8')
+#
+--format=dlang
+_D8demangle17__T4testVw100000Zv
+demangle.test!('\U000186a0')
+#
+--format=dlang
+_D8demangle17__T4testVde0A8P6Zv
+demangle.test!(42.0000)
+#
+--format=dlang
+_D8demangle16__T4testVdeA8P2Zv
+demangle.test!(42.0000)
+#
+--format=dlang
+_D8demangle18__T4testVdeN0A8P6Zv
+demangle.test!(-42.0000)
+#
+--format=dlang
+_D8demangle31__T4testVde0F6E978D4FDF3B646P7Zv
+demangle.test!(123.456)
+#
+--format=dlang
+_D8demangle15__T4testVdeNANZv
+demangle.test!(NaN)
+#
+--format=dlang
+_D8demangle15__T4testVdeINFZv
+demangle.test!(Inf)
+#
+--format=dlang
+_D8demangle16__T4testVdeNINFZv
+demangle.test!(-Inf)
+#
+--format=dlang
+_D8demangle23__T4testVfe0FFFFFFP128Zv
+demangle.test!(3.40282e+38)
+#
+--format=dlang
+_D8demangle32__T4testVde0FFFFFFFFFFFFF8P1024Zv
+demangle.test!(1.79769e+308)
+#
+--format=dlang
+_D8demangle19__T4testVfe08PN125Zv
+demangle.test!(1.17549e-38)
+#
+--format=dlang
+_D8demangle20__T4testVde08PN1021Zv
+demangle.test!(2.22507e-308)
+#
+--format=dlang
+_D8demangle51__T4testVrc0C4CCCCCCCCCCCCCDP4c0B666666666666666P6Zv
+demangle.test!(12.3000+45.6000i)
+#
+--format=dlang
+_D8demangle52__T4testVrcN0C4CCCCCCCCCCCCCDP4c0B666666666666666P6Zv
+demangle.test!(-12.3000+45.6000i)
+#
+--format=dlang
+_D8demangle22__T4testVG3ua3_616263Zv
+demangle.test!("abc")
+#
+--format=dlang
+_D8demangle22__T4testVG3ud3_616263Zv
+demangle.test!("abc"d)
+#
+--format=dlang
+_D8demangle22__T4testVG3uw3_616263Zv
+demangle.test!("abc"w)
+#
+--format=dlang
+_D8demangle22__T4testVAiA4i1i2i3i4Zv
+demangle.test!([1, 2, 3, 4])
+#
+--format=dlang
+_D8demangle25__T4testVAdA2e08P1eN08P1Zv
+demangle.test!([1.00000, -1.00000])
+#
+--format=dlang
+_D8demangle23__T4testVHiiA2i1i2i3i4Zv
+demangle.test!([1:2, 3:4])
+#
+--format=dlang
+_D8demangle39__T4testVHAxaiA2a3_616263i1a3_646566i2Zv
+demangle.test!(["abc":1, "def":2])
+#
+--format=dlang
+_D8demangle28__T4testVS8demangle1SS2i1i2Zv
+demangle.test!(demangle.S(1, 2))
+#
+--format=dlang
+_D8demangle35__T4testVS8demangle1SS2i1a3_616263Zv
+demangle.test!(demangle.S(1, "abc"))
+#
+# Unittests
+#
+--format=dlang
+printf
+printf
+#
+--format=dlang
+_foo
+_foo
+#
+--format=dlang
+_D88
+_D88
+#
+--format=dlang
+_D5__T1aZv
+_D5__T1aZv
+#
+--format=dlang
+_D4test3fooAa
+test.foo
+#
+--format=dlang
+_D8demangle8demangleFAaZAa
+demangle.demangle(char[])
+#
+--format=dlang
+_D6object6Object8opEqualsFC6ObjectZi
+object.Object.opEquals(Object)
+#
+--format=dlang
+_D6object6Object8opAssignFC6ObjectZi
+object.Object.opAssign(Object)
+#
+--format=dlang
+_D4test2dgDFiYd
+test.dg
+#
+--format=dlang
+_D1a1bi
+a.b
+#
+--format=dlang
+_D1a1bPFiZi
+a.b
+#
+--format=dlang
+_D4test34__T3barVG3uw3_616263VG3wd3_646566Z1xi
+test.bar!("abc"w, "def"d).x
+#
+--format=dlang
+_D6plugin8generateFiiZAya
+plugin.generate(int, int)
+#
+--format=dlang
+_D6plugin8generateFiiZAxa
+plugin.generate(int, int)
+#
+--format=dlang
+_D6plugin8generateFiiZAOa
+plugin.generate(int, int)
+#
+--format=dlang
+_D8demangle3fnAFZv3fnBMFZv
+demangle.fnA().fnB()
+#
+--format=dlang
+_D8demangle4mainFZv1S3fnCFZv
+demangle.main().S.fnC()
+#
+--format=dlang
+_D8demangle4mainFZv1S3fnDMFZv
+demangle.main().S.fnD()
+#
+--format=dlang
+_D8demangle4mainFZv5localMFZi
+demangle.main().local()
+#
+--format=dlang
+_D3std5ascii9uppercaseyAa
+std.ascii.uppercase
+#
+--format=dlang
+_D3std6stream9BOMEndianyG5E3std6system6Endian
+std.stream.BOMEndian
+#
+--format=dlang
+_D3std8internal7uni_tab10unicodeNkoyS3std8internal3uni12CodepointSet
+std.internal.uni_tab.unicodeNko
+#
+--format=dlang
+_D2gc2gc2GC6addrOfMFPvZPv
+gc.gc.GC.addrOf(void*)
+#
+--format=dlang
+_D3std7process10setCLOEXECFibZv
+std.process.setCLOEXEC(int, bool)
+#
+--format=dlang
+_D3std6digest2md3MD53putMFNaNbNeMAxhXv
+std.digest.md.MD5.put(scope const(ubyte)[]...)
+#
+--format=dlang
+_D3std6mmfile6MmFile13opIndexAssignMFhmZh
+std.mmfile.MmFile.opIndexAssign(ubyte, ulong)
+#
+--format=dlang
+_D3std7process18escapeShellCommandFxAAaXAya
+std.process.escapeShellCommand(const(char[][])...)
+#
+--format=dlang
+_D4core4sync5mutex5Mutex6__ctorMFC6ObjectZC4core4sync5mutex5Mutex
+core.sync.mutex.Mutex.this(Object)
+#
+--format=dlang
+_D6object14TypeInfo_Array8argTypesMFNbNfJC8TypeInfoJC8TypeInfoZi
+object.TypeInfo_Array.argTypes(out TypeInfo, out TypeInfo)
+#
+--format=dlang
+_D2rt6dmain211_d_run_mainUiPPaPUAAaZiZi7tryExecMFMDFZvZv
+rt.dmain2._d_run_main(int, char**, extern(C) int(char[][]) function*).tryExec(scope void() delegate)
+#
+--format=dlang
+_D6object9Exception6__ctorMFNaNbNfAyaAyamC6object9ThrowableZC9Exception
+object.Exception.this(immutable(char)[], immutable(char)[], ulong, object.Throwable)
+#
+--format=dlang
+_D3gcc3deh17parse_lsda_headerFPS3gcc6unwind7generic15_Unwind_ContextPhPS3gcc3deh16lsda_header_infoZPh
+gcc.deh.parse_lsda_header(gcc.unwind.generic._Unwind_Context*, ubyte*, gcc.deh.lsda_header_info*)
+#
+--format=dlang
+_D3std6socket23UnknownAddressReference6__ctorMFPS4core3sys5posix3sys6socket8sockaddrkZC3std6socket23UnknownAddressReference
+std.socket.UnknownAddressReference.this(core.sys.posix.sys.socket.sockaddr*, uint)
+#
+--format=dlang
+_D8demangle20__T2fnVAiA4i1i2i3i4Z2fnFZv
+demangle.fn!([1, 2, 3, 4]).fn()
+#
+--format=dlang
+_D8demangle10__T2fnVi1Z2fnFZv
+demangle.fn!(1).fn()
+#
+--format=dlang
+_D8demangle26__T2fnVS8demangle1SS2i1i2Z2fnFZv
+demangle.fn!(demangle.S(1, 2)).fn()
+#
+--format=dlang
+_D8demangle13__T2fnVeeNANZ2fnFZv
+demangle.fn!(NaN).fn()
+#
+--format=dlang
+_D8demangle14__T2fnVeeNINFZ2fnFZv
+demangle.fn!(-Inf).fn()
+#
+--format=dlang
+_D8demangle13__T2fnVeeINFZ2fnFZv
+demangle.fn!(Inf).fn()
+#
+--format=dlang
+_D8demangle21__T2fnVHiiA2i1i2i3i4Z2fnFZv
+demangle.fn!([1:2, 3:4]).fn()
+#
+--format=dlang
+_D8demangle2fnFNgiZNgi
+demangle.fn(inout(int))
+#
+--format=dlang
+_D8demangle29__T2fnVa97Va9Va0Vu257Vw65537Z2fnFZv
+demangle.fn!('a', '\x09', '\x00', '\u0101', '\U00010001').fn()
+#
+--format=dlang
+_D2gc11gctemplates56__T8mkBitmapTS3std5range13__T4iotaTiTiZ4iotaFiiZ6ResultZ8mkBitmapFNbNiNfPmmZv
+gc.gctemplates.mkBitmap!(std.range.iota!(int, int).iota(int, int).Result).mkBitmap(ulong*, ulong)
+#
+--format=dlang
+_D8serenity9persister6Sqlite70__T15SqlitePersisterTS8serenity9persister6Sqlite11__unittest6FZv4TestZ15SqlitePersister12__T7opIndexZ7opIndexMFmZS8serenity9persister6Sqlite11__unittest6FZv4Test
+serenity.persister.Sqlite.SqlitePersister!(serenity.persister.Sqlite.__unittest6().Test).SqlitePersister.opIndex!().opIndex(ulong)
+#
+--format=dlang
+_D4test4mainFZv5localMFZi
+test.main().local()
diff --git a/libiberty/testsuite/demangle-expected b/libiberty/testsuite/demangle-expected
index 864ee7e0f9c..a030685de08 100644
--- a/libiberty/testsuite/demangle-expected
+++ b/libiberty/testsuite/demangle-expected
@@ -4343,8 +4343,16 @@ cereal::detail::InputBindingMap<cereal::JSONInputArchive>::Serializers cereal::p
 --format=gnu-v3
 _ZNSt9_Any_data9_M_accessIPZ4postISt8functionIFvvEEEvOT_EUlvE_EERS5_v
 void post<std::function<void ()> >(std::function<void ()>&&)::{lambda()#1}*& std::_Any_data::_M_access<void post<std::function<void ()> >(void post<std::function<void ()> >(std::function<void ()>&&)::{lambda()#1}*&&)::{lambda()#1}*>()
+#
+--format=auto --no-params
+_Z3xxxDFyuVb
+xxx(unsigned long long _Fract, bool volatile)
+xxx
 # https://sourceware.org/bugzilla/show_bug.cgi?id=16817
 --format=auto --no-params
 _QueueNotification_QueueController__$4PPPPPPPM_A_INotice___Z
 _QueueNotification_QueueController__$4PPPPPPPM_A_INotice___Z
 _QueueNotification_QueueController__$4PPPPPPPM_A_INotice___Z
+--format=gnu-v3
+_Z1fSsB3fooS_
+f(std::string[abi:foo], std::string[abi:foo])
diff --git a/libiberty/testsuite/demangler-fuzzer.c b/libiberty/testsuite/demangler-fuzzer.c
new file mode 100644
index 00000000000..aff70247301
--- /dev/null
+++ b/libiberty/testsuite/demangler-fuzzer.c
@@ -0,0 +1,108 @@
+/* Demangler fuzzer.
+
+   Copyright (C) 2014 Free Software Foundation, Inc.
+
+   This file is part of GNU libiberty.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <time.h>
+#include "demangle.h"
+
+#define MAXLEN 253
+#define ALPMIN 33
+#define ALPMAX 127
+
+static char *program_name;
+
+#define DEFAULT_MAXCOUNT 7500000
+
+static void
+print_usage (FILE *fp, int exit_value)
+{
+  fprintf (fp, "Usage: %s [OPTION]...\n", program_name);
+  fprintf (fp, "Options:\n");
+  fprintf (fp, "  -h           Display this message.\n");
+  fprintf (fp, "  -s SEED      Select the random seed to be used.\n");
+  fprintf (fp, "               The default is to base one on the");
+  fprintf (fp, " current time.\n");
+  fprintf (fp, "  -m MAXCOUNT  Exit after MAXCOUNT symbols.\n");
+  fprintf (fp, "               The default is %d.", DEFAULT_MAXCOUNT);
+  fprintf (fp, " Set to `-1' for no limit.\n");
+
+  exit (exit_value);
+}
+
+int
+main (int argc, char *argv[])
+{
+  char symbol[2 + MAXLEN + 1] = "_Z";
+  int seed = -1, seed_set = 0;
+  int count = 0, maxcount = DEFAULT_MAXCOUNT;
+  int optchr;
+
+  program_name = argv[0];
+
+  do
+    {
+      optchr = getopt (argc, argv, "hs:m:t:");
+      switch (optchr)
+	{
+	case '?':  /* Unrecognized option.  */
+	  print_usage (stderr, 1);
+	  break;
+
+	case 'h':
+	  print_usage (stdout, 0);
+	  break;
+
+	case 's':
+	  seed = atoi (optarg);
+	  seed_set = 1;
+	  break;
+
+	case 'm':
+	  maxcount = atoi (optarg);
+	  break;
+	}
+    }
+  while (optchr != -1);
+
+  if (!seed_set)
+    seed = time (NULL);
+  srand (seed);
+  printf ("%s: seed = %d\n", program_name, seed);
+
+  while (maxcount < 0 || count < maxcount)
+    {
+      char *buffer = symbol + 2;
+      int length, i;
+
+      length = rand () % MAXLEN;
+      for (i = 0; i < length; i++)
+	*buffer++ = (rand () % (ALPMAX - ALPMIN)) + ALPMIN;
+
+      *buffer++ = '\0';
+
+      cplus_demangle (symbol, DMGL_AUTO | DMGL_ANSI | DMGL_PARAMS);
+
+      count++;
+    }
+
+  printf ("%s: successfully demangled %d symbols\n", program_name, count);
+  exit (0);
+}