Marek,
This may be unrelated to your patches for PR 66127 and 66066 but I am
having a new failure when building the latest glibc with the latest GCC.
I haven't yet tracked down exactly which patch caused the problem. Included
is a cutdown test case from libio/memstream.c in glibc that results in a
strict-aliasing error. Is this is something you already know about or have
seen?
In the mean time I will try to figure out exactly which patch caused this error
to trigger.
Steve Ellcey
sell...@imgtec.com
typedef unsigned int size_t;
extern void *malloc (size_t __size) __attribute__ ((__nothrow__ )) __attribute__
((__malloc__)) ;
struct _IO_FILE_plus { void *vtable; };
void *_IO_mem_jumps;
struct _IO_streambuf { };
typedef struct _IO_strfile_
{
struct _IO_streambuf _sbf;
} _IO_strfile;
struct _IO_FILE_memstream
{
_IO_strfile _sf;
};
void open_memstream (int bufloc, int sizeloc)
{
struct locked_FILE
{
struct _IO_FILE_memstream fp;
} *new_f;
new_f = (struct locked_FILE *) malloc (sizeof (struct locked_FILE));
((struct _IO_FILE_plus *) &new_f->fp._sf._sbf)->vtable = &_IO_mem_jumps;
}
x.c: In function 'open_memstream':
x.c:28:12: error: dereferencing type-punned pointer will break strict-aliasing
rules [-Werror=strict-aliasing]
((struct _IO_FILE_plus *) &new_f->fp._sf._sbf)->vtable = &_IO_mem_jumps;
^
cc1: all warnings being treated as errors
