#Forth, 6 bytes

Golfed

s" " *

Allocates an empty string with s" ", leaving it's address and length (0) on the stack, then multiplies them (resulting in a memory address being lost).

Valgrind

%valgrind --leak-check=full gforth -e 's" " * bye'
...
==12788== HEAP SUMMARY:
==12788== in use at exit: 223,855 bytes in 3,129 blocks
==12788== total heap usage: 7,289 allocs, 4,160 frees, 552,500 bytes allocated
==12788=わ=わ 
=わ=わ12788=わ=わ 1 bytes in 1 blocks are definitely lost in loss record 1 of 22
==12788== at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12788== by 0x406E39: gforth_engine (in /usr/bin/gforth-0.7.0)
==12788== by 0x41156A: gforth_go (in /usr/bin/gforth-0.7.0)
==12788== by 0x403F9A: main (in /usr/bin/gforth-0.7.0)
==12788== 
...
==12818== LEAK SUMMARY:
==12818== definitely lost: 1 bytes in 1 blocks
==12818== indirectly lost: 0 bytes in 0 blocks

Forth, 6 bytes

Golfed

s" " *

Allocates an empty string with s" ", leaving it's address and length (0) on the stack, then multiplies them (resulting in a memory address being lost).

Valgrind

%valgrind --leak-check=full gforth -e 's" " * bye'
...
==12788== HEAP SUMMARY:
==12788== in use at exit: 223,855 bytes in 3,129 blocks
==12788== total heap usage: 7,289 allocs, 4,160 frees, 552,500 bytes allocated
==12788=わ=わ 
=わ=わ12788=わ=わ 1 bytes in 1 blocks are definitely lost in loss record 1 of 22
==12788== at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12788== by 0x406E39: gforth_engine (in /usr/bin/gforth-0.7.0)
==12788== by 0x41156A: gforth_go (in /usr/bin/gforth-0.7.0)
==12788== by 0x403F9A: main (in /usr/bin/gforth-0.7.0)
==12788== 
...
==12818== LEAK SUMMARY:
==12818== definitely lost: 1 bytes in 1 blocks
==12818== indirectly lost: 0 bytes in 0 blocks

#Forth, 6 bytes

Golfed

s" " *

Allocates an empty string with s" ", leaving it's address and length (0) on the stack, then multiplies them (resulting in a memory address being lost).

Valgrind

%valgrind --leak-check=full gforth -e 's" " * bye'
...
==12788== HEAP SUMMARY:
==12788== in use at exit: 223,855 bytes in 3,129 blocks
==12788== total heap usage: 7,289 allocs, 4,160 frees, 552,500 bytes allocated
==12788=わ=わ 
=わ=わ12788=わ=わ 1 bytes in 1 blocks are definitely lost in loss record 1 of 22
==12788== at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12788== by 0x406E39: gforth_engine (in /usr/bin/gforth-0.7.0)
==12788== by 0x41156A: gforth_go (in /usr/bin/gforth-0.7.0)
==12788== by 0x403F9A: main (in /usr/bin/gforth-0.7.0)
==12788== 
...

#Forth, 6 bytes

Golfed

s" " *

Allocates an empty string with s" ", leaving it's address and length (0) on the stack, then multiplies them (resulting in a memory address being lost).

Valgrind

%valgrind --leak-check=full gforth -e 's" " * bye'
...
==12788== HEAP SUMMARY:
==12788== in use at exit: 223,855 bytes in 3,129 blocks
==12788== total heap usage: 7,289 allocs, 4,160 frees, 552,500 bytes allocated
==12788=わ=わ 
=わ=わ12788=わ=わ 1 bytes in 1 blocks are definitely lost in loss record 1 of 22
==12788== at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12788== by 0x406E39: gforth_engine (in /usr/bin/gforth-0.7.0)
==12788== by 0x41156A: gforth_go (in /usr/bin/gforth-0.7.0)
==12788== by 0x403F9A: main (in /usr/bin/gforth-0.7.0)
==12788== 
...
==12818== LEAK SUMMARY:
==12818== definitely lost: 1 bytes in 1 blocks
==12818== indirectly lost: 0 bytes in 0 blocks

#Forth, 6 bytes

Golfed

s" " *

Allocates an empty string with s" ", leaving it's address and length (0) on the stack, then multiplies them (resulting in a memory address being lost).

#Forth, 6 bytes

Golfed

s" " *

Allocates an empty string with s" ", leaving it's address and length (0) on the stack, then multiplies them (resulting in a memory address being lost).

Valgrind

%valgrind --leak-check=full gforth -e 's" " * bye'
...
==12788== HEAP SUMMARY:
==12788== in use at exit: 223,855 bytes in 3,129 blocks
==12788== total heap usage: 7,289 allocs, 4,160 frees, 552,500 bytes allocated
==12788=わ=わ 
=わ=わ12788=わ=わ 1 bytes in 1 blocks are definitely lost in loss record 1 of 22
==12788== at 0x4C2AB80: malloc (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12788== by 0x406E39: gforth_engine (in /usr/bin/gforth-0.7.0)
==12788== by 0x41156A: gforth_go (in /usr/bin/gforth-0.7.0)
==12788== by 0x403F9A: main (in /usr/bin/gforth-0.7.0)
==12788== 
...