(This has been logged as #3024825)
% gcc3 -v
Reading specs from /usr/libexec/gcc/darwin/ppc/3.1/specs
Thread model: posix
Apple Computer, Inc. GCC version 1151, based on gcc version 3.1
20020420 (prerelease)
I haven't come up with a small reproducible case, but I know how to
get rid of the crash in my case...
I have code that looks like:
static inline void _CPPWriteSwappedValueToBuffer(unsigned int v,
unsigned char *buf)
{
assert(sizeof(v) == 4);
buf[0] = (v & 0x000000ff) >> 0;
buf[1] = (v & 0x0000ff00) >> 8;
buf[2] = (v & 0x00ff0000) >> 16;
buf[3] = (v & 0xff000000) >> 24;
}
static inline void _CPPWriteSwappedValueToBuffer(float v, unsigned char
*buf)
{
union {
float f;
unsigned int i;
} x;
assert(sizeof(x.f) == sizeof(x.i));
x.f = v;
_CPPWriteSwappedValueToBuffer(x.i, buf);
}
If, instead, I create a typedef for the union outside of the function
scope, the compiler doesn't crash.
This crash happens when I'm compiling a C++ file that imports the PFE
that includes the header including the code above. If I turn off PFE,
I don't get the crash either, so it looks like a bug in PFE.
I can possibly provide a big pair of .i files (one for the header and
one for the source file) for someone at Apple if need be.
-tim
