leaks in setenv - OSX

output

werle:~/tmp
 × cc setenvbug.c -o setenvbug

werle:~/tmp
 √ valgrind --leak-check=yes --track-origins=yes --dsymutil=yes setenvbug
==37306== Memcheck, a memory error detector
==37306== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==37306== Using Valgrind-3.9.0 and LibVEX; rerun with -h for copyright info
==37306== Command: setenvbug
==37306==
==37306== WARNING: Support on MacOS 10.8/10.9 is experimental and mostly broken.
==37306== WARNING: Expect incorrect results, assertions and crashes.
==37306== WARNING: In particular, Memcheck on 32-bit programs will fail to
==37306== WARNING: detect any errors associated with heap-allocated data.
==37306==
==37306==
==37306== HEAP SUMMARY:
==37306==     in use at exit: 25,849 bytes in 379 blocks
==37306==   total heap usage: 457 allocs, 78 frees, 31,865 bytes allocated
==37306==
==37306== 80 (16 direct, 64 indirect) bytes in 1 blocks are definitely lost in loss record 47 of 79
==37306==    at 0x6DFB: malloc (in /usr/local/Cellar/valgrind/3.9.0/lib/valgrind/vgpreload_memcheck-amd64-darwin.so)
==37306==    by 0x1A4424: _owned_ptr_alloc (in /usr/lib/system/libsystem_c.dylib)
==37306==    by 0x1A4A9A: setenv (in /usr/lib/system/libsystem_c.dylib)
==37306==    by 0x100000F3F: indirect (in ./setenvbug)
==37306==    by 0x100000F63: main (in ./setenvbug)
==37306==
==37306== LEAK SUMMARY:
==37306==    definitely lost: 16 bytes in 1 blocks
==37306==    indirectly lost: 64 bytes in 1 blocks
==37306==      possibly lost: 0 bytes in 0 blocks
==37306==    still reachable: 312 bytes in 2 blocks
==37306==         suppressed: 25,457 bytes in 375 blocks
==37306== Reachable blocks (those to which a pointer was found) are not shown.
==37306== To see them, rerun with: --leak-check=full --show-leak-kinds=all
==37306==
==37306== For counts of detected and suppressed errors, rerun with: -v
==37306== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 148 from 49)

setenv-test.c

#include <stdlib.h>

void
indirect (void) {
  setenv("FOO", "BAR", 1);
}

int
main (void) {
  indirect();
  return 0;
}