Alex Gonzalez wrote:
Hi,
I am seeing an address error exception caused by the gcc optimizer -O1.
I have narrowed it down to the following function:
static void varcopy(PVAR *pvar1, PVAR *pvar2) {
memcpy(pvar1,pvar2,sizeof(PVAR));
}
Being the sizeof(PVAR) 160 bytes.
The exception is caused on an sd instruction when the input is not
aligned on a doubleword boundary.
I was under the assumption that the compiler made sure that it doesn't
store a doubleword that is not aligned on a doubleword boundary. Is
this a bug in the optimizer?
I am using a gcc mips64 cross-compiler,
mips64-linux-gnu-gcc (GCC) 3.3-mips64linux-031001
Has anyone experienced this problem before?
In order to investigate we would need a self contained test case (i.e.
the definition of PVAR must be included). Also it would be nice if you
could try it on a current version of GCC (4.2.1 perhaps).
David Daney
