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mallocalign: make sure alignptr offset is modulo align when -offset > align

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This commit is contained in:
cinap_lenrek 2014-02-02 05:47:13 +01:00
parent e289fd8ccd
commit a6fd3cc8e3
1 changed files with 6 additions and 6 deletions
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12
sys/src/libc/port/pool.c
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@ -1042,11 +1042,12 @@ alignptr(void *v, ulong align, long offset)
c = v;
if(align){
off = (uintptr)c%align;
off = ((ulong)(uintptr)c) % align;
if(off != offset){
c += offset - off;
if(off > offset)
c += align;
offset -= off;
if(offset < 0)
offset += align;
c += offset;
}
}
return c;
@ -1080,8 +1081,7 @@ poolallocalignl(Pool *p, ulong dsize, ulong align, long offset, ulong span)
if(align){
if(offset < 0)
offset = align - ((-offset)%align);
else
offset %= align;
offset %= align;
}
asize = dsize+align;
v = poolallocl(p, asize);