on S390, I get a compile error for dlfcn/tst-rec-dlopen.c:
tst-rec-dlopen.c: In function ‘malloc’:
tst-rec-dlopen.c:101:4: error: implicit declaration of function ‘strlen’ [-Werror=implicit-function-declaration]
(void) write (STDOUT_FILENO, message, strlen (message));
^
tst-rec-dlopen.c:101:42: error: incompatible implicit declaration of built-in function ‘strlen’ [-Werror]
(void) write (STDOUT_FILENO, message, strlen (message));
^
tst-rec-dlopen.c:112:42: error: incompatible implicit declaration of built-in function ‘strlen’ [-Werror]
(void) write (STDOUT_FILENO, message, strlen (message));
^
This patch adds the missing "#include <string.h>" for strlen.
ChangeLog:
* dlfcn/tst-rec-dlopen.c: Include string.h.
The ability to recursively call dlopen is useful for malloc
implementations that wish to load other dynamic modules that
implement reentrant/AS-safe functions to use in their own
implementation.
Given that a user malloc implementation may be called by an
ongoing dlopen to allocate memory the user malloc
implementation interrupts dlopen and if it calls dlopen again
that's a reentrant call.
This patch fixes the issues with the ld.so.cache mapping
and the _r_debug assertion which prevent this from working
as expected.
See:
https://sourceware.org/ml/libc-alpha/2014-12/msg00446.html
Joseph Myers
Stefan Liebler
Florian Weimer
Carlos O'Donell