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Diffstat (limited to 'include')
| -rw-r--r-- | include/ChangeLog | 5 | ||||
| -rw-r--r-- | include/ansidecl.h | 26 |
2 files changed, 31 insertions, 0 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index 47035883d3b..0221586d778 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,8 @@ +2017-09-15 Yao Qi <yao.qi@linaro.org> + Pedro Alves <palves@redhat.com> + + * ansidecl.h (DISABLE_COPY_AND_ASSIGN): New macro. + 2017-09-12 Jiong Wang <jiong.wang@arm.com> * dwarf2.def (DW_CFA_AARCH64_negate_ra_state): New DW_CFA_DUP. diff --git a/include/ansidecl.h b/include/ansidecl.h index ab3b895a475..450ce35da4b 100644 --- a/include/ansidecl.h +++ b/include/ansidecl.h @@ -360,6 +360,32 @@ So instead we use the macro below and test it against specific values. */ # define FINAL #endif +/* A macro to disable the copy constructor and assignment operator. + When building with C++11 and above, the methods are explicitly + deleted, causing a compile-time error if something tries to copy. + For C++03, this just declares the methods, causing a link-time + error if the methods end up called (assuming you don't + define them). For C++03, for best results, place the macro + under the private: access specifier, like this, + + class name_lookup + { + private: + DISABLE_COPY_AND_ASSIGN (name_lookup); + }; + + so that most attempts at copy are caught at compile-time. */ + +#if __cplusplus >= 201103 +#define DISABLE_COPY_AND_ASSIGN(TYPE) \ + TYPE (const TYPE&) = delete; \ + void operator= (const TYPE &) = delete + #else +#define DISABLE_COPY_AND_ASSIGN(TYPE) \ + TYPE (const TYPE&); \ + void operator= (const TYPE &) +#endif /* __cplusplus >= 201103 */ + #ifdef __cplusplus } #endif |