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我正面臨SIGEV與此malloc包裝代碼，任何人都可以請幫我嗎？malloc包裝代碼問題
enter code here
#include <stdio.h>
#include <dlfcn.h>
#include <stdlib.h>
#include <string.h>
void *handle;
static void* (*ef_libc_malloc) (size_t);
static void* (*ef_libc_calloc) (size_t, size_t);
static void init1() __attribute__ ((constructor));
void *malloc(size_t size)
{
return (*ef_libc_malloc)(size);
}
void *calloc(size_t nmemb, size_t size)
{
return (*ef_libc_calloc)(nmemb, size);
}
void init1()
{
//handle=dlopen("/devel/lib/libc.so.6",RTLD_LAZY);
handle=dlopen("libc.so.6",RTLD_LAZY);
if(!handle) {
printf("dlopen failed\n");
exit(1);
}
ef_libc_malloc = dlsym(handle, "malloc");
if(!ef_libc_malloc) {
printf("Could not resolve malloc in libc.so\n");
}
ef_libc_calloc = dlsym(handle, "calloc");
if(!ef_libc_calloc) {
printf("Could not resolve calloc in libc.so\n");
}
}
int main()
{
char *ptr;
ptr=(char*)malloc(20);
strcpy(ptr,"jghjghbj");
puts(ptr);
}
下面是GDB回溯：
enter code here
(gdb) r
Starting program: /usr/local/arm-sony-linux-gnueabi/target/arm/tmp/efence/a.out
Program received signal SIGSEGV, Segmentation fault.
0x00000000 in ??()
(gdb) bt
#0 0x00000000 in ??()
#1 0x080484c8 in malloc (size=20) at dlopen10.c:13
#2 0x0067cb42 in _dl_map_object_deps() from /lib/ld-linux.so.2
#3 0x00681aed in dl_open_worker() from /lib/ld-linux.so.2
#4 0x0067de26 in _dl_catch_error() from /lib/ld-linux.so.2
#5 0x00681472 in _dl_open() from /lib/ld-linux.so.2
#6 0x00803c4d in dlopen_doit() from /lib/libdl.so.2
#7 0x0067de26 in _dl_catch_error() from /lib/ld-linux.so.2
#8 0x008042cc in _dlerror_run() from /lib/libdl.so.2
#9 0x00803b84 in [email protected]@GLIBC_2.1() from /lib/libdl.so.2
#10 0x08048501 in init1() at dlopen10.c:25
#11 0x0804866b in __do_global_ctors_aux()
#12 0x0804836d in _init()
#13 0x080485f9 in __libc_csu_init()
#14 0x006a8e41 in __libc_start_main() from /lib/libc.so.6
#15 0x08048401 in _start()
(gdb) q
The program is running. Exit anyway? (y or n) y
我無法找到問題的根源。請幫我解決這個問題。 請幫幫我。
謝謝！確切地說，我只是試過這個，它的工作。 – kingsmasher1