On 09/22/2017 08:25 PM, nick wrote: > Greetings All, > > I am wondering if this is a warning worth looking into or is it just another > false postive: > > /home/nick/gcc/gcc/combine.c:1316:8: warning: ‘prev’ may be used > uninitialized in this function [-Wmaybe-uninitialized] > if ((next = try_combine (insn, prev, NULL, NULL, > > Maybe it's just me being new to the project but is the code for that > literally or also identical between this and the > one where CC0 register is directly used. Looks like a false positive to me. Without more details (host, target, flags, cpp output) I can't be 100% sure why it triggers though.
Flow sensitive warnings such as this are very sensitive to a variety of low level target and IL details. Jeff
