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* Updated/added copyright headersKent Boortz2011-06-301-1/+1
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* | Make MY_ALIGNED usable to define alignment of data structuresMikael Ronstrom2011-05-041-1/+1
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* | Make MY_ALIGNED usable to define alignment of data structuresMikael Ronstrom2011-05-041-0/+8
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* Bug#58057: 5.1 libmysql/libmysql.c unused variable/compile failureDavi Arnaut2010-11-101-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bug#57995: Compiler flag change build error on OSX 10.4: my_getncpus.c Bug#57996: Compiler flag change build error on OSX 10.5 : bind.c Bug#57994: Compiler flag change build error : my_redel.c Bug#57993: Compiler flag change build error on FreeBsd 7.0 : regexec.c Bug#57992: Compiler flag change build error on FreeBsd : mf_keycache.c Bug#57997: Compiler flag change build error on OSX 10.6: debug_sync.cc Fix assorted compiler generated warnings. cmd-line-utils/readline/bind.c: Bug#57996: Compiler flag change build error on OSX 10.5 : bind.c Initialize variable to work around a false positive warning. include/m_string.h: Bug#57994: Compiler flag change build error : my_redel.c The expansion of stpcpy (in glibc) causes warnings if the return value of strmov is not being used. Since stpcpy is a GNU extension and the expansion ends up using a built-in provided by GCC, use the compiler provided built-in directly when possible. include/my_compiler.h: Define a dummy MY_GNUC_PREREQ when not compiling with GCC. libmysql/libmysql.c: Bug#58057: 5.1 libmysql/libmysql.c unused variable/compile failure Variable might not be used in some cases. So, tag it as unused. mysys/mf_keycache.c: Bug#57992: Compiler flag change build error on FreeBsd : mf_keycache.c Use UNINIT_VAR to work around a false positive warning. mysys/my_getncpus.c: Bug#57995: Compiler flag change build error on OSX 10.4: my_getncpus.c Declare variable in the same block where it is used. regex/regexec.c: Bug#57993: Compiler flag change build error on FreeBsd 7.0 : regexec.c Work around a compiler bug which causes the cast to not be enforced. sql/debug_sync.cc: Bug#57997: Compiler flag change build error on OSX 10.6: debug_sync.cc Use UNINIT_VAR to work around a false positive warning. sql/handler.cc: Use UNINIT_VAR to work around a false positive warning. sql/slave.cc: Use UNINIT_VAR to work around a false positive warning. sql/sql_partition.cc: Use UNINIT_VAR to work around a false positive warning. storage/myisam/ft_nlq_search.c: Use UNINIT_VAR to work around a false positive warning. storage/myisam/mi_create.c: Use UNINIT_VAR to work around a false positive warning. storage/myisammrg/myrg_open.c: Use UNINIT_VAR to work around a false positive warning. tests/mysql_client_test.c: Change function to take a pointer to const, no need for a cast.
* Bug#45288: pb2 returns a lot of compilation warningsDavi Arnaut2010-10-201-1/+12
| | | | | | | | | | | | | | | | Fix assorted warnings that are generated in optimized builds. Most of it is silencing variables that are set but unused. This patch also introduces the MY_ASSERT_UNREACHABLE macro which helps the compiler to deduce that a certain piece of code is unreachable. include/my_compiler.h: Use GCC's __builtin_unreachable if available. It allows GCC to deduce the unreachability of certain code paths, thus avoiding warnings that, for example, accused that a variable could be used without being initialized (due to unreachable code paths).
* Bug#42733: Type-punning warnings when compiling MySQL --Davi Arnaut2010-07-141-1/+3
| | | | | | | | | | | | | | | | strict aliasing violations. Post-merge fix: include my_compiler.h before my_attribute.h as the latter will undef __attribute__ if the compiler is not GCC. Based on the compiler version, in my_compiler.h we know for sure whether the aligned attribute is supported. Furthermore, undefining attribute might cause bugs if some system header uses it. include/my_compiler.h: Drop aligned attribute support from Sun Studio C++ compiler as its not clear exactly which version of it supports the attribute.
* Bug#42733: Type-punning warnings when compiling MySQL --Davi Arnaut2010-07-141-0/+127
strict aliasing violations. Another rather noisy violation of strict aliasing rules is the spatial code which makes use of stack-based memory (of type Geometry_buffer) to provide placement for Geometry objects. Although a placement new is allowed to dynamically change the type of a object, the object returned by the new placement was being ignored and the original stack-based object was being casted to the new type, thus violating strict aliasing rules. The solution is to reorganize the code so that the object returned by the new placement is used instead of casting the original object. Also, to ensure that the stack-based object is properly aligned with respect to the objects it provides placement for, a set of compiler-dependent macros and types are introduced so that the alignment of objects can be inquired and specified. include/Makefile.am: Add new header. include/my_compiler.h: Add new header. include/my_global.h: Remove now-unnecessary macros. sql/spatial.cc: Make object creation functions return the object whose type was dynamically changed by the new placement. Move static method from the header in order to avoid having to access a forward declaration. sql/spatial.h: Object creation callbacks now take a array of chars as the storage area. Move create_by_typeid to a source file as to not access the forward declaration of Geometry_buffer. Ensure that Geometry_buffer is properly aligned. sql/sql_show.cc: Use newly added aligned storage helper.