On 05/07/2012 10:03 PM, Jim Meyering wrote: > Thanks to the nixos/hydra autobuilder, I noticed that the new > LD_PRELOAD-based test was failing in one of their build environments: > > http://hydra.nixos.org/build/2531974 > > + echo xyz > + LD_PRELOAD=./k.so > + cp src d > cp: symbol lookup error: ./k.so: undefined symbol: dlsym > > Here's the probable fix: > > From fedebc59a040a7e34dce5c987b7f6fcf2cefa904 Mon Sep 17 00:00:00 2001 > From: Jim Meyering <[email protected]> > Date: Mon, 7 May 2012 22:01:20 +0200 > Subject: [PATCH] tests: avoid LD_PRELOAD lookup error for dlsym > > * tests/cp/nfs-removal-race: Link with -ldl. > --- > tests/cp/nfs-removal-race | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/tests/cp/nfs-removal-race b/tests/cp/nfs-removal-race > index 6a435b0..cb8aba3 100755 > --- a/tests/cp/nfs-removal-race > +++ b/tests/cp/nfs-removal-race > @@ -57,7 +57,7 @@ __xstat (int ver, const char *path, struct stat *st) > EOF > > # Then compile/link it: > -$CC -shared -fPIC -O2 k.c -o k.so \ > +$CC -shared -fPIC -O2 k.c -o k.so -ldl \ > || framework_failure_ 'failed to compile with -shared -fPIC' > > touch d2 || framework_failure_ > -- > 1.7.10.1.457.g8275905
I'm puzzled: if your assumption is true, then why doesn't the other LD_PRELOAD based test - "ls/getxattr-speedup" - fail? Have a nice day, Berny
