《Qt应用与开发》.ppt

* Valgrind输出样例 out.txt ==29613== Memcheck, a memory error detector. ==29613== Copyright (C) 2002-2006, and GNU GPLd, by Julian Seward et al. ==29613== Using LibVEX rev 1658, a library for dynamic binary translation. ==29613== Copyright (C) 2004-2006, and GNU GPLd, by OpenWorks LLP. ==29613== Using valgrind-3.2.1-Debian, a dynamic binary instrumentation framework. ==29613== Copyright (C) 2000-2006, and GNU GPLd, by Julian Seward et al. ==29613== For more details, rerun with: -v ==29613== ==29613== Conditional jump or move depends on uninitialised value(s) ==29613== at 0x804849D: main (valgrind_test.c:42) ==29613== ==29613== Invalid read of size 1 ==29613== at 0x80483EC: ml (valgrind_test.c:14) ==29613== by 0x80484AA: main (valgrind_test.c:45) ==29613== Address 0x4171258 is 0 bytes inside a block of size 512 freed ==29613== at 0x402123A: free (vg_replace_malloc.c:233) ==29613== by 0x80483E8: ml (valgrind_test.c:11) ==29613== by 0x80484AA: main (valgrind_test.c:45) ==29613== ==29613== Invalid read of size 1 ==29613== at 0x80483F5: ml (valgrind_test.c:15) ==29613== by 0x80484AA: main (valgrind_test.c:45) ==29613== Address 0x4171258 is 0 bytes inside a block of size 512 freed ==29613== at 0x402123A: free (vg_replace_malloc.c:233) ==29613== by 0x80483E8: ml (valgrind_test.c:11) ==29613== by 0x80484AA: main (valgrind_test.c:45) ==29613== * Valgrind输出样例 out.txt ==29613== Invalid write of size 4 ==29613== at 0x8048438: a1 (valgrind_test.c:27) ==29613== by 0x80484AF: main (valgrind_test.c:46) ==29613== Address 0x41714B0 is 0 bytes after a block of size 40 allocd ==29613== at 0x4021620: malloc (vg_replace_malloc.c:149) ==29613== by 0x804840E: a1 (valgrind_test.c:23) ==29613== by 0x80484AF: main (valgrind_test.c:46) ==29613== ==29613== Invalid read of size 4 ==29613== at 0x8048461: a1 (valgrind_test.c:30) ==29613== by 0x80484AF: main (valgrind_test.c:46) ==29613== Address 0x41714B0 is 0 bytes after a block of size