http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52320
Bug #: 52320 Summary: missing destructor call after thrown exception in initializer Classification: Unclassified Product: gcc Version: 4.5.3 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ AssignedTo: unassig...@gcc.gnu.org ReportedBy: mmehl...@semanticdesigns.com The following example has constructors of class A called 4 times but destructors only 3 times. Apparently, if an exception is thrown during the construction of an aggregate class, the destructors of already constructed data members are not called. #include <iostream> #define FUNCTION_NAME __PRETTY_FUNCTION__ #define TRACE_FUNCTION { std::cout << this << "->" << FUNCTION_NAME << std::endl; } struct A { A() { TRACE_FUNCTION; } A(int) { TRACE_FUNCTION; } A(const A&) { TRACE_FUNCTION; } A &operator=(const A&) TRACE_FUNCTION; ~A() TRACE_FUNCTION; }; int main() { try { struct X { A e1[2], e2; } x2[3] = { 1, 2, 3, 4, (0, throw 9, 5), 6 }; } catch (...) { } } Detailed version information: Using built-in specs. COLLECT_GCC=gcc COLLECT_LTO_WRAPPER=/usr/lib/gcc/i686-pc-cygwin/4.5.3/lto-wrapper.exe Target: i686-pc-cygwin Configured with: /gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3/configure --srcdir=/gnu/gcc/releases/respins/4.5.3-3/gcc4-4.5.3-3/src/gcc-4.5.3 --prefix=/usr --exec-prefix=/usr --bindir=/usr/bin --sbindir=/usr/sbin --libexecdir=/usr/lib --datadir=/usr/share --localstatedir=/var --sysconfdir=/etc --datarootdir=/usr/share --docdir=/usr/share/doc/gcc4 -C --datadir=/usr/share --infodir=/usr/share/info --mandir=/usr/share/man -v --with-gmp=/usr --with-mpfr=/usr --enable-bootstrap --enable-version-specific-runtime-libs --libexecdir=/usr/lib --enable-static --enable-shared --enable-shared-libgcc --disable-__cxa_atexit --with-gnu-ld --with-gnu-as --with-dwarf2 --disable-sjlj-exceptions --enable-languages=ada,c,c++,fortran,java,lto,objc,obj-c++ --enable-graphite --enable-lto --enable-java-awt=gtk --disable-symvers --enable-libjava --program-suffix=-4 --enable-libgomp --enable-libssp --enable-libada --enable-threads=posix --with-arch=i686 --with-tune=generic --enable-libgcj-sublibs CC=gcc-4 CXX=g++-4 CC_FOR_TARGET=gcc-4 CXX_FOR_TARGET=g++-4 GNATMAKE_FOR_TARGET=gnatmake GNATBIND_FOR_TARGET=gnatbind --with-ecj-jar=/usr/share/java/ecj.jar Thread model: posix gcc version 4.5.3 (GCC)