From: Yann Le Du yann.le.du@kernkonzept.com

The existing limit of 20 was found to be insufficient when moving from gcc 8 to gcc 9. At the time a test ran already 16 handlers had been installed leaving only minimal room for application installed handlers.

Musl uses 32, as does newlib. Further, the ISO C standard for C99 specifies that:

The implementation shall support the registration of at least 32 functions.

(7.20.4.2 The atexit function)

Co-authored-by: Yann Le Du yann.le.du@kernkonzept.com Signed-off-by: Marcus Haehnel marcus.haehnel@kernkonzept.com --- include/stdlib.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/stdlib.h b/include/stdlib.h index 8b1375184..d4e0b75e7 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -606,7 +606,7 @@ libc_hidden_proto(unsetenv) #ifdef __UCLIBC_DYNAMIC_ATEXIT__ # define __UCLIBC_MAX_ATEXIT INT_MAX #else -# define __UCLIBC_MAX_ATEXIT 20 +# define __UCLIBC_MAX_ATEXIT 32 #endif