I'm trying to initialize a std::map with an array of std::pair, but it causes a sigsegv. I'm using GCC 3.4.6 on RHEL 4.4 x86_64.
My gdb backtrace, a snippet of stl_map.h, and my program are included below. For better formatted display, see http://paste.collinslabs.com/?show=30. Notice in particular the values of the parameters to the map constructor and the insert_unique() function in frames #3 and #2, respectively. Why is __first in the map constructor one thing, and __first in the insert_unique function another? 1. /* map.cpp */ 2. #include <iostream> 3. #include <map> 4. #include <string> 5. #include <utility> 6. #include <vector> 7. 8. namespace { 9. void f() {} 10. void g() {} 11. 12. typedef std::pair<std::string, void (*)()> mypair_t; 13. 14. mypair_t pairs[] = 15. { 16. mypair_t("f", &f), 17. mypair_t("g", &g) 18. }; 19. } 20. 21. int main() 22. { 23. std::map<std::string, void (*)()> mymap(pairs, pairs +sizeof(pairs)); 24. } 25. 26. 27. /* stl_map.h line 180-ish (libstdc++ 3.3.5) */ 28. template <typename _InputIterator> 29. map(_InputIterator __first, _InputIterator __last) 30. : _M_t(_Compare(), allocator_type()) 31. { _M_t.insert_unique(__first, __last); } 32. 33. /* gdb backtrace 34. ******************************************************************************** 35. #0 0x00000033448903a9 in std::basic_string<char, std::char_traits<char>, std::\ 36. allocator<char> >::basic_string () from /usr/lib64/libstdc++.so. 6 37. #1 0x00000000004012af in pair<std::string, void (*)()> (this=0x7fbffff510, 38. [EMAIL PROTECTED]) 39. at /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../ include/c++/3.4.6/bit\ 40. s/stl_pair.h:90 41. #2 0x0000000000401100 in std::_Rb_tree<std::string, std::pair<std::string cons\ 42. t, void (*)()>, std::_Select1st<std::pair<std::string const, void (*)()> >, std\ 43. ::less<std::string>, std::allocator<std::pair<std::string const, void (*)()> > \ 44. >::insert_unique<std::pair<std::string, void (*)()>*> (this=0x7fbffff5d0, 45. __first=0x502bc0, __last=0x502da0) 46. at /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../ include/c++/3.4.6/bit\ 47. s/stl_tree.h:996 48. #3 0x0000000000400faf in map<<unnamed>::mypair_t*> (this=0x7fbffff5d0, 49. __first=0x502ba0, __last=0x502da0) 50. at /usr/lib/gcc/x86_64-redhat-linux/3.4.6/../../../../ include/c++/3.4.6/bit\ 51. s/stl_map.h:180 52. #4 0x0000000000400d66 in main () at map.cpp:22 53. ******************************************************************************* 54. */ _______________________________________________ help-gplusplus mailing list help-gplusplus@gnu.org http://lists.gnu.org/mailman/listinfo/help-gplusplus
