[REX]: supporting stacktrace output when the compiler(rose-cc, etc) i…

…s aborted because

of calling ASSERT_* related mlogging or ROSE_ASSERT/ROSE_ABORT. The
implementation uses boost stacktrace in mlog.C file, but must be enabled
in the configure/building of the whole source tree. To enable it, set
CFLAGS/CXXFLAGS/LDFLAGS for configure, e.g.

   CXXFLAGS="-DBOOST_STACKTRACE_LINK -DREX_STACKTRACE_ABORT_BOOST"
   CFLAGS="-DBOOST_STACKTRACE_LINK -DREX_STACKTRACE_ABORT_BOOST"
   LDFLAGS="-lboost_stacktrace_backtrace"

These compiler and linker lags can be passed to --with-DEBUG, -with-C_DEBUG,
or -with-CXX_DEBUG of the configure, but setting directly via
CFLAGS/CXXFLAGS/LDFLAGS seems to be easier to use.

src/util/mlog.C

@@ -8,6 +8,10 @@
 #include <stdio.h>
 #include "mlog.h"
 
+#if defined(REX_STACKTRACE_ABORT_BOOST)
+#include <boost/stacktrace.hpp>
+#endif
+
 int mlogLevel = DEFAULT_MLOG_LEVEL;
 
 /**
@@ -76,6 +80,9 @@ void mlogAssertFail_C(const char * subject, const char * expr, const char * file
 	    va_end(l);
 	    fflush(mlogFile);
 	}
+#if defined(REX_STACKTRACE_ABORT_BOOST)
+	std::cerr << boost::stacktrace::stacktrace();
+#endif
 	abort();
 }
 

src/util/mlog.h

@@ -84,7 +84,6 @@ extern std::string mlogLevelToString_CXX(MLOG_LEVEL_t level);
 #define WHEREARG __FILE__,__LINE__, __func__
 
 //C-style API for mandatory fatal/error/warning/debugging mlogging
-#define MLOG_FAIL_C(SUBJECT, ...) { mlog_C(MLOG_LEVEL_FAIL, SUBJECT, WHEREARG, __VA_ARGS__); abort();}
 #define MLOG_FATAL_C(SUBJECT, ...) mlog_C(MLOG_LEVEL_FATAL, SUBJECT, WHEREARG, __VA_ARGS__)
 #define MLOG_ERROR_C(SUBJECT, ...) mlog_C(MLOG_LEVEL_ERROR, SUBJECT, WHEREARG, __VA_ARGS__)
 #define MLOG_WARN_C(SUBJECT, ...)  mlog_C(MLOG_LEVEL_WARN,  SUBJECT, WHEREARG, __VA_ARGS__)