Author: pluto
Date: Sat Aug 26 00:29:37 2006
New Revision: 7687
Modified:
backtracexx/backtracexx.cpp
Log:
- better error handling.
Modified: backtracexx/backtracexx.cpp
==============================================================================
--- backtracexx/backtracexx.cpp (original)
+++ backtracexx/backtracexx.cpp Sat Aug 26 00:29:37 2006
@@ -53,22 +53,28 @@
{
os.str( std::string() );
Dl_info info;
+ os << std::setw( 18 ) << *i << " : ";
if ( dladdr( const_cast< void* >( *i ), &info ) )
{
- long offset = reinterpret_cast< long >( *i ) -
reinterpret_cast< long >( info.dli_saddr );
- int status;
- char* demangled = abi::__cxa_demangle(
info.dli_sname, 0, 0, &status );
- if ( status != -1 )
+ if ( !info.dli_saddr )
+ // the image containing address is
found, but no nearest symbol was found.
+ os << "??";
+ else
{
- os << std::setw( 18 ) << *i << " :
"
- << ( ( status == 0 ) ?
demangled : info.dli_sname )
- << '+' << offset << " from " <<
info.dli_fname;
- if ( status == 0 )
- free( demangled );
+ int status;
+ char* demangled = abi::__cxa_demangle(
info.dli_sname, 0, 0, &status );
+ if ( status != -1 )
+ {
+ long offset = reinterpret_cast<
long >( *i ) - reinterpret_cast< long >( info.dli_saddr );
+ os << ( ( status == 0 ) ?
demangled : info.dli_sname ) << '+' << offset;
+ if ( status == 0 )
+ free( demangled );
+ }
}
+ os << " from " << info.dli_fname;
}
else
- os << std::setw( 18 ) << *i << " ??";
+ os << "??";
sbt.push_back( os.str() );
}
return sbt;
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