Re: [Dwarf-Discuss] variable locations - safe use as lvalues

On 1/21/20 3:17 PM, Greg Clayton via Dwarf-Discuss wrote: On Jan 21, 2020, at 2:58 PM, Frank Ch. Eigler via Dwarf-Discuss wrote: Hi - While dwarfdump has 'check the DWARF' options available the location list overlap test is not done at all. The -kl option suggests it does loclist checking

Re: [Dwarf-Discuss] variable locations - safe use as lvalues

> On Jan 21, 2020, at 2:58 PM, Frank Ch. Eigler via Dwarf-Discuss > wrote: > > Hi - > >> While dwarfdump has 'check the DWARF' options available the >> location list overlap test is not done at all. The -kl option suggests >> it does loclist checking, but its checking is rather superficial.

Re: [Dwarf-Discuss] variable locations - safe use as lvalues

Hi - > While dwarfdump has 'check the DWARF' options available the > location list overlap test is not done at all. The -kl option suggests > it does loclist checking, but its checking is rather superficial. Note that one should not present these overlaps as -errors- (because they may be accurate

Re: [Dwarf-Discuss] variable locations - safe use as lvalues

On 1/21/20 11:18 AM, Greg Clayton via Dwarf-Discuss wrote: [...] Presumably, a debugger could check that location lists do not overlap. This could nevertheless be a valid heuristic to detect the case. the "llvm-dwarfdump" binary in llvm.org  has a "--verify" option that lo

Re: [Dwarf-Discuss] variable locations - safe use as lvalues

> On Jan 20, 2020, at 6:21 PM, Frank Ch. Eigler via Dwarf-Discuss > wrote: > > Hi - > >>> - ... and undoubtedly other complications exist! >> >> Interesting question. > > Thanks! > > We have been thinking in similar directions generally as y'all. > > >> Complication 2: The compiler reuse

Re: [Dwarf-Discuss] variable locations - safe use as lvalues

> On Jan 20, 2020, at 2:20 PM, Frank Ch. Eigler via Dwarf-Discuss > wrote: > > Hi - > > I have a question about variable location lists, but not their > encoding, the use they are suitable for. The basic debugging scenario > is just reading variable values, for which this is fine, especiall