启用内存泄漏/越界检查工具

SOURCES += main.cpp

# -fsanitize=leak意思为开启内存泄露检查
QMAKE_CXXFLAGS += "-fsanitize=leak"
QMAKE_CFLAGS   += "-fsanitize=leak"
QMAKE_LFLAGS   += "-fsanitize=leak"

# -fsanitize=address意思为开启内存越界检查
# -fno-omit-frame-pointer意思为显示更详细的信息
QMAKE_CXXFLAGS += "-fsanitize=address -fno-omit-frame-pointer"
QMAKE_CFLAGS   += "-fsanitize=address -fno-omit-frame-pointer"
QMAKE_LFLAGS   += "-fsanitize=address"

#include <stdlib.h>

int main(int argc, char *argv[])
{
    /* 内存泄露 */
    malloc(10); /* 行6 */

    /* 内存越界 */
    int a[10] = {0};
    int b = a[11]; /* 行10 */

    return -1;
}

/* 发现一处内存越界，位于main.cpp行10 */
==4495==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7ffc816edd5c 
#0 0x400998 in main ../Detector/main.cpp:10

/* 发现一处内存泄漏位于，main.cpp行6 */
Direct leak of 10 byte(s) in 1 object(s) allocated from:
#0 0x7ff56bbba602 in malloc (/usr/lib/x86_64-linux-gnu/libasan.so.2+0x98602)
#1 0x40071e in main ../Detector/main.cpp:6

gcc -fsanitize=leak -fsanitize=address -fno-omit-frame-pointer -llsan main.cpp