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2017-04-25Fix build on gcc < 5 (std::is_trivially_copyable missing)Pedro Alves1-0/+4
Ref: https://sourceware.org/ml/gdb-patches/2017-04/msg00660.html Simply skip the poisoning on older compilers. gdb/ChangeLog: 2017-04-25 Pedro Alves <palves@redhat.com> * common/poison.h [!HAVE_IS_TRIVIALLY_COPYABLE] (IsRelocatable) (BothAreRelocatable, memcopy, memmove): Don't define. * common/traits.h (__has_feature, HAVE_IS_TRIVIALLY_COPYABLE): New macros.
2017-04-25Poison non-POD memset & non-trivially-copyable memcpy/memmovePedro Alves1-0/+83
This patch catches invalid initialization of non-POD types with memset, at compile time. This is what I used to catch the problems fixed by the previous patches in the series: $ make -k 2>&1 | grep "deleted function" src/gdb/breakpoint.c:951:53: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = bp_location; <template-parameter-1-2> = void; size_t = long unsigned int]’ src/gdb/breakpoint.c:7325:32: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = bp_location; <template-parameter-1-2> = void; size_t = long unsigned int]’ src/gdb/btrace.c:1153:42: error: use of deleted function ‘void* memset(T*, int, size_t) [with T = btrace_insn; <template-parameter-1-2> = void; size_t = long unsigned int]’ ... gdb/ChangeLog: 2017-04-25 Pedro Alves <palves@redhat.com> * common/common-defs.h: Include "common/poison.h". * common/function-view.h: (Not, Or, Requires): Move to traits.h and adjust. * common/poison.h: New file. * common/traits.h: Include <type_traits>. (Not, Or, Requires): New, moved from common/function-view.h.