shift exponent too large in left shift #544
Description
when supplying a carefully crafted GOTO, it is possible to have a left shift showing potentially undefined behavior, as more than bit-width bits are left shifted
while(in.good())
{
unsigned char ch=in.get();
res|=(size_t(ch&0x7f))<<shift_distance;
shift_distance+=7;
if((ch&0x80)==0) break;
}