On 13-Jan-2019 08:47, Bram Moolenaar wrote:
Patch 8.1.0735
Problem:    Cannot handle binary data.
Solution:   Add the Blob type. (Yasuhiro Matsumoto, closes #3638)
Files:      runtime/doc/eval.txt, runtime/doc/if_perl.txt,
             runtime/doc/if_ruby.txt, src/Make_cyg_ming.mak, src/Make_mvc.mak,
             src/Makefile, src/blob.c, src/channel.c, src/eval.c,
             src/evalfunc.c, src/if_perl.xs, src/if_py_both.h, src/if_python.c,
             src/if_python3.c, src/if_ruby.c, src/json.c, src/netbeans.c,
             src/proto.h, src/proto/blob.pro, src/proto/channel.pro,
             src/structs.h, src/testdir/Make_all.mak, src/vim.h, src/globals.h,
             src/testdir/test_blob.vim, src/testdir/test_channel.vim


After this patch, mingw-64 (gcc 8.2.1) spits out this warning:
gcc -c -I. -Iproto -DWIN32 -DWINVER=0x0603 -D_WIN32_WINNT=0x0603 -DHAVE_PATHDEF -DFEAT_NORMAL -DHAVE_STDINT_H -DFEAT_GUI_W32 -DFEAT_CLIPBOARD -pipe -march=native -Wall -O3 -fomit-frame-pointer -freg-struct-return -s eval.c -o gobjnative/eval.o
eval.c: In function 'eval7':
eval.c:4209:4: warning: 'blob' may be used uninitialized in this function [-Wmaybe-uninitialized]
    ++blob->bv_refcount;
    ^~~~~~~~~~~~~~~~~~~

Please check the attached patch.
Cheers
John

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4189c4189
<                   blob_T  *blob;
---
>                   blob_T  *blob = NULL;

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