Bruno Haible wrote:
1) You're basically saying "let's use signed integer types for indices",
and you do that in the quotearg.c change.
Yes. This is not my invention; it's common in C programs generally to use int
for indexes. Using ptrdiff_t for indexes is the preferred coding style in the C
> For this purpose, it would be good if GCC had a type, say, __gcc_index_t,
> that -fsanitize=undefined will make produce a diagnostic is a value < 0
> or > PTRDIFF_MAX is assigned.
Actually, this is a special case of a range type. If we could have Ada's range
types [1] in C, with overflow check e
Hi Paul,
> I installed the patch I proposed yesterday, along with the
> additional patches attached, which merely change the x* functions to
> check for both kinds of overflow.
These changes give me some stomach-ache. I perfectly understand that
you're making a departure from 20 years of C trad
Hi,
init.sh is used in the GNU gettext test suite, and I frequently have the need
to inspect temporary files after a test failure (or even after an unexpected
test pass). Therefore here's a proposed patch that introduces an option to do
this.
2016-12-15 Bruno Haible
init.sh: Add poss
On 12/15/2016 02:09 AM, Bruno Haible wrote:
So, the limiting factor is the pointer difference operator
ptr1 - ptr2where sizeof (*ptr1,*ptr2) > 1.
Yes, it is the pointer difference operator. However, the problem occurs
even with size-1 array elements. For example:
#include
#inclu
Norihiro Tanaka wrote:
dfa matcher is not always slower than kws matcher.
- $ env LC_ALL=C grep -F -w 0 k
- $ env LC_ALL=C grep -F -w -f /usr/share/dict/words /dev/null
First is faster after the changes, and second is slower after the
changes. It's a trade-off. Can you have any idea to select
> I've not checked all test-*.cc files for such errors.
Another issue with sys_select.in.h:
test-sys_select-c++.cc
sys/select.h(305): error C2440: 'return': cannot convert from
'int (__cdecl *)(int,fd_set *,fd_set *,fd_set *,timeval *)' to
'gnulib_::_gl_select_wrapper::type'
sys/select.h
I get errors from MSVC in i C++ mode. E.g. in compiling
test-netdb-c++.cc:
netdb.h(189): error C2440: 'return': cannot convert
from 'INT (__stdcall *)(PCSTR,PCSTR,const ADDRINFOA *,PADDRINFOA *)' to
'gnulib_::_gl_getaddrinfo_wrapper::type'
Ditto error for '_gl_freeaddrinfo_wrapper'.
Some
Paul Eggert wrote:
> #include
> #include
> #include
>
> ptrdiff_t
> diff (short *a, short *b)
> {
>return a - b;
> }
>
> int
> main (void)
> {
>size_t n = PTRDIFF_MAX / sizeof (short) + 1;
>short *x = malloc (n * sizeof (short));
>return 0 < diff (x + n, x);
> }
I can reproduc
