codesourcery 다음 버전을 사용하고 있습니다. gcc version 4.4.1 (Sourcery G++ Lite 2009q3-67)
스택 메모리 검사를 위해 -fstack-protector 옵션을 주었는데 동작을 하지 않네요.
X86 gcc에서는 잘 동작합니다.
컴파일러 직접 빌드 말고 해결법이 있을까요?
[bushi@rose imgs]$ /opt/cross-host/arm-2009q3/bin/arm-none-linux-gnueabi-gcc --version arm-none-linux-gnueabi-gcc (Sourcery G++ Lite 2009q3-67) 4.4.1 Copyright (C) 2009 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [bushi@rose imgs]$ [bushi@rose imgs]$ cat x.c #include <string.h> int test_stackfault(void) { char buf[16]; memset(buf, 0xff, sizeof(buf)+1); } int main(int argc, char **argv) { char buf[20]; memset(buf, 0x00, sizeof(buf)); return test_stackfault(); } [bushi@rose imgs]$ [bushi@rose imgs]$ /opt/cross-host/arm-2009q3/bin/arm-none-linux-gnueabi-gcc -o x x.c [bushi@rose imgs]$ [bushi@rose imgs]$ ./x 세그멘테이션 오류 (core dumped) [bushi@rose imgs]$ /opt/cross-host/arm-2009q3/bin/arm-none-linux-gnueabi-gcc -o x x.c -fstack-protector [bushi@rose imgs]$ [bushi@rose imgs]$ ./x *** stack smashing detected ***: ./x terminated ... ... ...
헉! 감사합니다.
[bushi@rose imgs]$
[bushi@rose imgs]$ /opt/cross-host/arm-2009q3/bin/arm-none-linux-gnueabi-gcc --version arm-none-linux-gnueabi-gcc (Sourcery G++ Lite 2009q3-67) 4.4.1 Copyright (C) 2009 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. [bushi@rose imgs]$ [bushi@rose imgs]$ cat x.c #include <string.h> int test_stackfault(void) { char buf[16]; memset(buf, 0xff, sizeof(buf)+1); } int main(int argc, char **argv) { char buf[20]; memset(buf, 0x00, sizeof(buf)); return test_stackfault(); } [bushi@rose imgs]$ [bushi@rose imgs]$ /opt/cross-host/arm-2009q3/bin/arm-none-linux-gnueabi-gcc -o x x.c [bushi@rose imgs]$ [bushi@rose imgs]$ ./x 세그멘테이션 오류 (core dumped) [bushi@rose imgs]$ /opt/cross-host/arm-2009q3/bin/arm-none-linux-gnueabi-gcc -o x x.c -fstack-protector [bushi@rose imgs]$ [bushi@rose imgs]$ ./x *** stack smashing detected ***: ./x terminated ... ... ...헉! 감사합니다.
헉! 감사합니다.