On 23/09/09 08:41PM, david.k...@libertysurf.fr wrote: > The stdlib is just a glue/wrapper to the underlying operating system, here > Windows or Linux.
What is weird is that tcc requires a libc function, memset, when none is
explicitly requested, when for example this code:
//------------------------------ test1.c -----------------------------------
int
main()
{
char buf[16] = {0};
return 0;
}
//--------------------------------------------------------------------------
compiles with GCC and executes correctly with
$ gcc -o test1 -Wl,-nostdlib test1.c
$ ./test1
$
with the relevant code compiled into
# t.c:8: {
movq %fs:40, %rax # MEM[(<address-space-1> long unsigned int
*)40B], tmp85
movq %rax, -8(%rbp) # tmp85, D.1986
xorl %eax, %eax # tmp85
# t.c:9: char buf[16] = {0};
movq $0, -32(%rbp) #, buf
movq $0, -24(%rbp) #, buf
# t.c:10: return 0;
movl $0, %eax #, _3
# t.c:11: }
movq -8(%rbp), %rdx # D.1986, tmp86
subq %fs:40, %rdx # MEM[(<address-space-1> long unsigned int
*)40B], tmp86
je .L3 #,
call __stack_chk_fail@PLT #
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