http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54928
Bug #: 54928
Summary: Infinite output with after ICE with macro
Classification: Unclassified
Product: gcc
Version: 4.8.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: [email protected]
ReportedBy: [email protected]
Compiling this without options produces infinite output.
#define M(x) x
template<class T> class A {void F(){M(sizeof(double));}};
template class A<int>;
Beginning of output:
prog.cpp: In instantiation of ‘void A<T>::F() [with T = int]’:
prog.cpp:3:16: required from here
prog.cpp:2:45: internal compiler error: in tsubst_copy, at cp/pt.c:12349
template<class T> class A {void F(){M(sizeof(double));}};
^
prog.cpp:1:14: note: in definition of macro 'M'
#define M(x) x
^
prog.cpp:2:45: internal compiler error: in internal_error, at diagnostic.c:1069
template<class T> class A {void F(){M(sizeof(double));}};
^
prog.cpp:1:14: note: in definition of macro 'M'
#define M(x) x
^
<the last bit repeats over and over.>
Output of g++ -v:
Using built-in specs.
COLLECT_GCC=/new-gcc/i-4.8/bin/g++
COLLECT_LTO_WRAPPER=/new-gcc/i-4.8/libexec/gcc/x86_64-unknown-linux-gnu/4.8.0/lto-wrapper
Target: x86_64-unknown-linux-gnu
Configured with: ../s-4.8/configure --prefix=/new-gcc/i-4.8
Thread model: posix
gcc version 4.8.0 20121014 (experimental) (GCC)
I filed the ICE leading up to the infinite loop as a separate bug.
