delete vs delete[]

Greetings everyone,

gcc 4.4/gcc 4.5

int *p = NULL;

delete p;

0x08049fe5 <+0>: push %ebp

0x08049fe6 <+1>: mov %esp,%ebp

0x08049fe8 <+3>: and $0xfffffff0,%esp

0x08049feb <+6>: sub $0x20,%esp

0x08049fee <+9>: call 0x8048fb4 <mcount@plt>

0x08049ff3 <+14>: movl $0x0,0x1c(%esp)

0x08049ffb <+22>: mov 0x1c(%esp),%eax

0x08049fff <+26>: mov %eax,(%esp)

0x0804a002 <+29>: call 0x8048e54 <_ZdlPv@plt>

0x0804a007 <+34>: mov $0x1,%eax

0x0804a00c <+39>: leave

0x0804a00d <+40>: ret

 

int *p = NULL;

delete[] p;

0x08049fe5 <+0>: push %ebp

0x08049fe6 <+1>: mov %esp,%ebp

0x08049fe8 <+3>: and $0xfffffff0,%esp

0x08049feb <+6>: sub $0x20,%esp

0x08049fee <+9>: call 0x8048fa4 <mcount@plt>

0x08049ff3 <+14>: movl $0x0,0x1c(%esp)

0x08049ffb <+22>: cmpl $0x0,0x1c(%esp)

0x0804a000 <+27>: je 0x804a00e <main+41>

0x0804a002 <+29>: mov 0x1c(%esp),%eax

0x0804a006 <+33>: mov %eax,(%esp)

0x0804a009 <+36>: call 0x8048fc4 <_ZdaPv@plt>

0x0804a00e <+41>: mov $0x1,%eax

0x0804a013 <+46>: leave

0x0804a014 <+47>: ret

So, we are not calling ::operator delete[] in case of NULL-pointer.

0x08049ffb <+22>: cmpl $0x0,0x1c(%esp)

0x0804a000 <+27>: je 0x804a00e <main+41>

Any comments?