我已经使用 Sun 编译器将代码从 Solaris/Sparc/x86 移植到使用 GCC 4.4.6 的 Red Hat Linux 6.2，并且在 valgrind 和核心转储下报告内存损坏的代码存在问题。
相同的源代码在 Solaris（Sparc 和 x86）上运行时没有错误。
发生错误的区域在我调用以检索系统配置的共享库中。
它抱怨的内存是共享库中的本地堆栈变量。Valgrind 没有帮助我找到发生故障的实际区域。
带有“-d check -b -p 1”选项的 DBGMEM 内存调试器没有检测到我可以在报告中看到的任何内存，程序正常退出。
带有“-v --leak-check=yes --read-var-info=yes”选项的 valgrind 内存调试器失败，报告无效写入。
来自 valgrind 日志：
==22043== Invalid write of size 8
==22043== at 0x51DF74D: setLockingMode (db_support_funcs.c:258)
==22043== by 0x40BF4E: GetAmaHdrParameters (AmaFileWriter.c:3707)
==22043== by 0x40490E: MakeAMADNSFile (AmaFileWriter.c:899)
==22043== by 0x403109: main (MakeAmaFile.c:775)
==22043== Address 0x7fefebea8 is not stack'd, malloc'd or (recently) free'd
==22043==
==22043== Invalid write of size 8
==22043== at 0x51DF348: logconfig (db_support_funcs.c:228)
==22043== by 0x51DF790: setLockingMode (db_support_funcs.c:257)
==22043== by 0x40BF4E: GetAmaHdrParameters (AmaFileWriter.c:3707)
==22043== by 0x40490E: MakeAMADNSFile (AmaFileWriter.c:899)
==22043== by 0x403109: main (MakeAmaFile.c:775)
==22043== Address 0x7fefebd68 is not stack'd, malloc'd or (recently) free'd
==22043==
==22043== Invalid write of size 8
==22043== at 0x51DF36A: logconfig (db_support_funcs.c:176)
==22043== by 0x51DF790: setLockingMode (db_support_funcs.c:257)
==22043== by 0x40BF4E: GetAmaHdrParameters (AmaFileWriter.c:3707)
==22043== by 0x40490E: MakeAMADNSFile (AmaFileWriter.c:899)
==22043== by 0x403109: main (MakeAmaFile.c:775)
==22043== Address 0x7fefebcc8 is not stack'd, malloc'd or (recently) free'd
==22043==
==22043== Invalid write of size 8
==22043== at 0x51DF396: logconfig (db_support_funcs.c:177)
==22043== by 0x51DF790: setLockingMode (db_support_funcs.c:257)
==22043== by 0x40BF4E: GetAmaHdrParameters (AmaFileWriter.c:3707)
==22043== by 0x40490E: MakeAMADNSFile (AmaFileWriter.c:899)
==22043== by 0x403109: main (MakeAmaFile.c:775)
==22043== Address 0x7fefeacb8 is not stack'd, malloc'd or (recently) free'd
==22043==
==22043==
==22043== Process terminating with default action of signal 11 (SIGSEGV): dumping core
==22043== Access not within mapped region at address 0x7FEFEACB8
==22043== at 0x51DF396: logconfig (db_support_funcs.c:177)
==22043== by 0x51DF790: setLockingMode (db_support_funcs.c:257)
==22043== by 0x40BF4E: GetAmaHdrParameters (AmaFileWriter.c:3707)
==22043== by 0x40490E: MakeAMADNSFile (AmaFileWriter.c:899)
==22043== by 0x403109: main (MakeAmaFile.c:775)
==22043== If you believe this happened as a result of a stack
==22043== overflow in your program's main thread (unlikely but
==22043== possible), you can try to increase the size of the
==22043== main thread stack using the --main-stacksize= flag.
==22043== The main thread stack size used in this run was 10485760.
db_support_funcs.c 中调用源的函数是：
-- line 255 -- void setLockingMode( short locking )
-- line 256 -- {
-- line 257 -- logconfig(0, LOG_DEBUG1, "DEBUG1:[%s:%d]:setLockingMode(locking=%d), currently %d", __FILE__,__LINE__, locking, disable_lock);
-- line 258 -- disable_lock = locking;
-- line 259 -- }
-- line 168 -- void logconfig( int errnoflag, int level, const char *fmt, ... )
-- line 169 -- {
-- line 170 -- va_list ap;
-- line 171 -- int errno_save = errno; /* Value caller might want printed */
-- line 172 -- long n;
-- line 173 -- time_t curr_time;
-- line 174 -- struct tm *curr_tm,
-- line 175 -- *stat_tm;
-- line 176 -- struct stat stat_buff;
-- line 177 -- char buff[BIG_BUFFER_LEN];
-- line 178 -- static char pid_str[MAX_PATH_LEN];
-- line 179 -- static int first_time = 1;
代码使用以下开关选项编译： Shared Lib: -D_LINUX_SOURCE -DLINUX -D_REENTRANT -DDEBUG_ENABLED -Wall -Wwrite-strings -DDEBUG -DTHREAD_SAFE -g -fstack-check -Wmissing-prototypes -Wpointer-arith -Wcast-align - DNOPROTX -pthread -D__LITTLE_ENDIAN=1234 -D_LITTLEENDIAN -DL_ENDIAN -fPIC -DTHREAD_SAFE -shared -fPIC
应用程序：-D_LINUX_SOURCE -DLINUX -D_REENTRANT -DDEBUG_ENABLED -Wall -Wwrite-strings -DDEBUG -g -fstack-check -Wmissing-prototypes -Wpointer-arith -Wcast-align -DNOPROTX -pthread -g -D__LITTLE_ENDIAN=1234 -D_LITTLEENDIAN -DL_ENDIAN -fPIC
我正在使用 gcc 版本 4.4.6 20110731 (Red Hat 4.4.6-3) (GCC)