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Don't take the address of a void object.

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GCC 4.5 warns about "extern void _end; &end;".
Use char[] instead, as that also doesn't fall foul
of a target's .sdata optimizations.

Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Richard Henderson
2010-03-26 09:16:21 -07:00
parent 07f9ca32a9
commit b1c1949e60
4 changed files with 16 additions and 9 deletions
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8
sysdeps/unix/sysv/linux/dl-sysdep.c
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@ -47,12 +47,12 @@ frob_brk (void)
Later Linux kernels have changed this behavior so that the initial
break value is rounded up to the page boundary before we start. */
extern void *__curbrk attribute_hidden;
extern void _end attribute_hidden;
void *const endpage = (void *) 0 + (((__curbrk - (void *) 0)
extern char *__curbrk attribute_hidden;
extern char _end[] attribute_hidden;
char *const endpage = (void *) 0 + (((__curbrk - (char *) 0)
+ GLRO(dl_pagesize) - 1)
& -GLRO(dl_pagesize));
if (__builtin_expect (__curbrk >= &_end && __curbrk < endpage, 0))
if (__builtin_expect (__curbrk >= _end && __curbrk < endpage, 0))
__brk (endpage);
#endif
}