Created attachment 5130 [details]
testcase

hi,

on execve() man page:
http://www.kernel.org/doc/man-pages/online/pages/man2/execve.2.html
we can read:

(...)
RETURN VALUE
 On success, execve() does not return, on error -1 is returned,
 and errno is set appropriately.
(...)
 ENOENT
 The file filename or a script or ELF interpreter does not exist,
 or a shared library needed for file or interpreter cannot be found.
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^                ^^^^^^^^^^^^^^^^

but in the real world the execve() doesn't return if i accidentaly
try to run a child process w/o required shared libs on search path.

$ make
gcc -Wall -g2 parent.c -o parent
gcc -Wall -g2 hello.c -shared -fpic -o libhello.so
gcc -Wall -g2 child.c -o child ./libhello.so
rm libhello.so
./parent
<program name unknown>: error while loading shared libraries:
 ./libhello.so: cannot open shared object file: No such file or directory