http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57047
Jakub Jelinek <jakub at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jason at gcc dot gnu.org Target Milestone|--- |4.7.4 Summary|[C++11] stl_pair.h:137:64: |[4.7/4.8/4.9 Regression] |internal compiler error: |[C++11] stl_pair.h:137:64: |Segmentation fault in |internal compiler error: |constexpr constructor |Segmentation fault in | |constexpr constructor --- Comment #10 from Jakub Jelinek <jakub at gcc dot gnu.org> 2013-04-23 15:10:32 UTC --- Reduced testcase: template <typename> struct A; template <typename T> struct A <T &> { typedef T type; }; template <typename T> constexpr T && foo (typename A <T>::type & __t) noexcept { return static_cast <T &&>(__t); } template <class T1, class T2> struct B { T1 t1; T2 t2; template <class U> constexpr B (U && __x, const T2 & __y) : t1 (foo <U> (__x)), t2 (__y) {} }; static inline constexpr bool fn1 (const char c) { return ('0' <= c) && (c <= '9'); } static inline constexpr bool fn2 (const char c) { return (('A' <= c) && (c <= 'Z')) || (('a' <= c) && (c <= 'z')); } static constexpr bool fn3 (const char *const x) { return (x[1] == '\0' && x[0] == ']') ? true : (!fn1 (x[0])) ? false : fn3 (&x[1]); } static constexpr bool fn4 (const char *const x) { return (x[0] == '\0') ? fn3 (&x[1]) : fn4 (&x[1]); } static inline constexpr bool fn5 (const char *const x) { return fn2 (x[0]) ? fn4 (x) : false; } struct C final { constexpr C (const char *const t1) : c (fn5 (t1) ? 199 : 69) {} unsigned c; }; B <C, C> p ("a", "b"); Started to ICE in between r175000 and r175062.