* src/getargs.c (getargs): Don't display any argv other that argv[0]
when reporting a missing argument.
* tests/bison.in: Neutralize path differences in stderr.
* tests/input.at (Invalid number of arguments): New.
* src/getargs.c (usage): Rely on setlocale (LC_MESSAGES, NULL)
trick only on glibc, as POSIX does not specify the output
of setlocale in this case, and the Gnulib localename module
source code indicates that the trick works only on glibc.
C11 no longer requires support for variable-length arrays, and
VS2015 does not have them. Redo UNIQSTR_CONCAT to use a method
that is simpler and better anyway.
* src/uniqstr.c (uniqstr_vsprintf): Remove; no longer needed.
* src/uniqstr.h (UNIQSTR_GEN_FORMAT, UNIQSTR_GEN_FORMAT_):
* src/uniqstr.c (uniqstr_concat): New function.
* src/uniqstr.h (UNIQSTR_CONCAT): Use it instead of using
uniqstr_vsprintf.
* doc/bison.texi: Minor fixes in typography.
It is no longer require to pass --defines for C++ (it was addressed
long ago).
No longer refer to the `variant` define variable, it was replaced by
`api.value.type variant`.
Prefer nullptr to 0 for the null pointer.
Use deftypeop for constructors.
(Complete Symbols): Give the expected signature of yylex.
Don't document the symbol_type constructors, as we want users to focus
on make_TOKEN.
Also show the case without locations.
Bison's test 464 (Syntax error as exception) fails on the CI.
Do not use clang with asan on Ubuntu's libc++.
https://bugs.llvm.org/show_bug.cgi?id=17379
* .travis.yml (Clang 7 libc++ and ASAN): New.
(Clang 6 -O3 and libc++): Really use libc++.
(Clang 5): Don't use libc++, nor asan (does not work either, same
reason).
