[Valgrind-users] Didn't find deliberate leak

[Darren C. <da...@dc...>]

Hi,
I just installed valgrind from source, default configuration, and tried it 
on a C++ program with a memory leak I'd inserted, specifically I added this 
line, with no delete:
   char *myleak=new char[777];myleak[0]='x';myleak[1]=0;	//TEMP!

But it says no errors [1]; it also says no malloc'd blocks. (my program 
doesn't spawn children but I added that line just to be sure after reading 
the FAQ).

I'm compiling with -g3, no optimizations, using g++ 3.2 on RH8.

Is this a bug or do I need to add some command-line option to get it to work 
with C++ programs?

Darren


[1]:
$ valgrind -v --leak-check=yes --trace-children=yes ./9.apd_1.exe
==14950== Memcheck, a.k.a. Valgrind, a memory error detector for x86-linux.
==14950== Copyright (C) 2002-2003, and GNU GPL'd, by Julian Seward.
==14950== Using valgrind-2.0.0, a program supervision framework for x86-linux.
==14950== Copyright (C) 2000-2003, and GNU GPL'd, by Julian Seward.
==14950== Command line:
==14950==    ./9.apd_1.exe
==14950== Startup, with flags:
==14950==    --suppressions=/usr/local/lib/valgrind/default.supp
==14950==    -v
==14950==    --leak-check=yes
==14950==    --trace-children=yes
==14950== Reading syms from /home/darren/Projects/ago3/tests/9.apd_1.exe
==14950== Reading syms from /lib/ld-2.3.2.so
==14950==    object doesn't have a symbol table
==14950==    object doesn't have any debug info
==14950== Reading syms from /usr/local/lib/valgrind/vgskin_memcheck.so
==14950== Reading syms from /usr/local/lib/valgrind/valgrind.so
==14950== Reading syms from /usr/lib/libstdc++.so.5.0.1
==14950== Reading syms from /lib/i686/libm-2.3.2.so
==14950==    object doesn't have a symbol table
==14950==    object doesn't have any debug info
==14950== Reading syms from /lib/libgcc_s-3.2-20020903.so.1
==14950== Reading syms from /lib/i686/libc-2.3.2.so
==14950==    object doesn't have a symbol table
==14950==    object doesn't have any debug info
==14950== Reading suppressions file: /usr/local/lib/valgrind/default.supp
==14950== Estimated CPU clock rate is 2007 MHz
==14950==
==14950==
==14950== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)
==14950== malloc/free: in use at exit: 0 bytes in 0 blocks.
==14950== malloc/free: 0 allocs, 0 frees, 0 bytes allocated.
==14950==
==14950== No malloc'd blocks -- no leaks are possible.
--14950--     TT/TC: 0 tc sectors discarded.
--14950--            2788 chainings, 0 unchainings.
--14950-- translate: new     4041 (64557 -> 848058; ratio 131:10)
--14950--            discard 0 (0 -> 0; ratio 0:10).
--14950--  dispatch: 5050000 jumps (bb entries), of which 339308 (6%) were 
unchained.
--14950--            103/5057 major/minor sched events.  4104 tt_fast misses.
--14950-- reg-alloc: 508 t-req-spill, 158757+3291 orig+spill uis, 19742 
total-reg-r.
--14950--    sanity: 104 cheap, 5 expensive checks.
--14950--    ccalls: 18348 C calls, 57% saves+restores avoided (61672 bytes)
--14950--            24848 args, avg 0.88 setup instrs each (5570 bytes)
--14950--            0% clear the stack (55044 bytes)
--14950--            5370 retvals, 33% of reg-reg movs avoided (3462 bytes)