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Pedro Alves 1945192cb9 Rewrite valid-expr.h's internals in terms of the detection idiom (C++17/N4502)
An earlier attempt at doing this had failed (wouldn't work in GCCs
around 4.8, IIRC), but now that I try again, it works.  I suspect that
my previous attempt did not use the pre C++14-safe void_t (in
traits.h).

I want to switch to this model because:

 - It's the standard detection idiom that folks will learn starting
   with C++17.

 - In the enum_flags unit tests, I have a static_assert that triggers
   a warning (resulting in build error), which GCC does not suppress
   because the warning is not being triggered in the SFINAE context.
   Switching to the detection idiom fixes that.  Alternatively,
   switching to the C++03-style expression-validity checking with a
   varargs overload would allow addressing that, but I think that
   would be going backwards idiomatically speaking.

 - While this patch shows a net increase of lines of code, the magic
   being added to traits.h can be removed in a few years when we start
   requiring C++17.

gdbsupport/ChangeLog:

	* traits.h (struct nonesuch, struct detector, detected_or)
	(detected_or_t, is_detected, detected_t, detected_or)
	(detected_or_t, is_detected_exact, is_detected_convertible): New.
	* valid-expr.h (CHECK_VALID_EXPR_INT): Use gdb::is_detected_exact.
2020-09-14 22:19:31 +01:00
bfd Automatic date update in version.in 2020-09-14 00:00:14 +00:00
binutils x86: Add NT_X86_CET note 2020-09-11 05:52:06 -07:00
config sync libiberty from gcc 2020-09-08 20:12:57 +09:30
contrib
cpu bpf: simulator: correct div, mod insn semantics 2020-09-08 11:39:07 -07:00
elfcpp CSKY: Support attribute section. 2020-08-28 17:23:24 +08:00
etc
gas Fix support for theassembler's new ".nop" directive on the IA64 target. 2020-09-14 16:56:41 +01:00
gdb Rename address_space_int_to_name/address_space_name_to_int 2020-09-14 22:19:02 +01:00
gdbserver Apply 'const' in more places 2020-09-14 13:31:01 -06:00
gdbsupport Rewrite valid-expr.h's internals in terms of the detection idiom (C++17/N4502) 2020-09-14 22:19:31 +01:00
gnulib Do not adjust mtime timezone on Windows 2020-09-08 10:41:03 -06:00
gold PowerPC TPREL_HA/LO optimisation 2020-08-24 21:15:06 +09:30
gprof Unify Solaris procfs and largefile handling 2020-07-30 15:41:50 +02:00
include elf: Add -z unique-symbol to avoid duplicated local symbol names 2020-09-12 05:37:43 -07:00
intl
ld Re: elf: Add -z unique-symbol 2020-09-13 18:42:12 +09:30
libctf libctf, binutils, include, ld: gettextize and improve error handling 2020-08-27 13:15:43 +01:00
libdecnumber Run autoreconf -vf throughout 2020-07-29 16:03:55 -04:00
libiberty Sync include, libiberty with GCC. 2020-09-11 11:32:00 -07:00
opcodes Stop symbols generated by the annobin gcc plugin from breaking the disassembly of PowerPC binaries. 2020-09-10 13:23:11 +01:00
readline
sim bpf: simulator: correct div, mod insn semantics 2020-09-08 11:39:07 -07:00
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ChangeLog PKG_CHECK_MODULES: Check if $pkg_cv_[]$1[]_LIBS works 2020-07-28 03:56:34 -07:00
compile
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configure config/debuginfod.m4: Use PKG_CHECK_MODULES 2020-07-24 15:16:20 -04:00
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		   README for GNU development tools

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