Hi, On 2021-11-23 17:28:08 +0100, Peter Eisentraut wrote: > On 22.11.21 23:32, Tom Lane wrote: > > > The easier approach for this class of issues is to use the linker option > > > -Bsymbolic. > > I don't recall details, but we've previously rejected the idea of > > trying to use -Bsymbolic widely; apparently it has undesirable > > side-effects on some platforms. See commit message for e3d77ea6b > > (hopefully there's some detail in the email thread [1]). It sounds > > like you're not actually proposing that, but I thought it would be > > a good idea to note the hazard here. > > Also, IIRC, -Bsymbolic was once frowned upon by packaging policies, since it > prevents use of LD_PRELOAD. I'm not sure what the current thinking there > is, however.
It doesn't break some (most?) of the uses of LD_PRELOAD. In particular, it doesn't break things like replacing the malloc implementation. When do you have a symbol that you want to override *inside* your library (executables already bind to their own symbols at compile time)? I've seen that for replacing buggy functions in closed source things, but that's about it? Greetings, Andres Freund
