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Patch from Andreas Stührk <andy@hammerhartes.de> to work around build
failures with GCC >= 6 like:
In file included from kcdbext.cc:16:0:
kcdbext.h: In member function 'char* kyotocabinet::IndexDB::get(const char*, size_t, size_t*)':
kcdbext.h:1281:14: error: cannot convert 'bool' to 'char*' in return
return false;
^~~~~
In file included from kclangc.cc:17:0:
kcdbext.h: In member function 'char* kyotocabinet::IndexDB::get(const char*, size_t, size_t*)':
kcdbext.h:1281:14: error: cannot convert 'bool' to 'char*' in return
return false;
^~~~~
Note that using '\0' rather nullptr (like the patch from openSUSE is
doing) just leads to new build failures with GCC >= 7 like:
In file included from kcdbext.cc:16:0:
kcdbext.h: In member function 'char* kyotocabinet::IndexDB::get(const char*, size_t, size_t*)':
kcdbext.h:1281:14: error: invalid conversion from 'char' to 'char*' [-fpermissive]
return '\0';
^~~~
In file included from kclangc.cc:17:0:
kcdbext.h: In member function 'char* kyotocabinet::IndexDB::get(const char*, size_t, size_t*)':
kcdbext.h:1281:14: error: invalid conversion from 'char' to 'char*' [-fpermissive]
return '\0';
^~~~
See also:
- https://bugzilla.redhat.com/show_bug.cgi?id=1307706
- https://build.opensuse.org/package/view_file/devel:libraries:c_c++/kyotocabinet/gcc6-fix-errors.patch?expand=1
- https://bugs.debian.org/811627
--- kyotocabinet-1.2.76/kcdbext.h 2016-05-25 11:32:53.591866016 +0200
+++ kyotocabinet-1.2.76/kcdbext.h 2012-05-24 18:27:59.000000000 +0200
@@ -1278,7 +1278,7 @@
if (omode_ == 0) {
set_error(_KCCODELINE_, BasicDB::Error::INVALID, "not opened");
*sp = 0;
- return false;
+ return nullptr;
}
if (!cache_) return db_.get(kbuf, ksiz, sp);
size_t dvsiz = 0;
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