Christian Franke wrote:
This segfaults if gcc -fno-builtin option is used:
ffs(0x8000)
These work:
ffs(0xc000)
ffs(0x4000)
Likely a subtle problem in table based ffs() implementation in
winsup/cygwin/syscalls.cc if only upper bit is set. The newlib version
of ffs() works.
Eliot Moss wrote:
On 9/23/2014 8:47 AM, Paulo César Pereira de Andrade wrote:
Hi,
I am almost done porting https://savannah.gnu.org/projects/lightning
to cygwin and windows64 abi. But I found a problem with the ffs
function.
The test case is simple:
$ cat x.c
extern int ffs(int);
i
On 9/23/2014 8:47 AM, Paulo César Pereira de Andrade wrote:
Hi,
I am almost done porting https://savannah.gnu.org/projects/lightning
to cygwin and windows64 abi. But I found a problem with the ffs function.
The test case is simple:
$ cat x.c
extern int ffs(int);
int main(void) {
long
Hi,
I am almost done porting https://savannah.gnu.org/projects/lightning
to cygwin and windows64 abi. But I found a problem with the ffs function.
The test case is simple:
$ cat x.c
extern int ffs(int);
int main(void) {
long l = 0x8000;
int i = ffs((int)l);
return 0;
}
$ gcc -O0 -g3 x
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