Dominique wrote:
> Running all Vim tests with ubsan (undefined sanitizer
> i.e. when compiling with clang or gcc-4.9.* option
> -faddress=undefined), I see this error in test72
> using Vim-7.4.442.
>
> undo.c:1022:14: runtime error: left shift of 255 by 24 places cannot be
> represented in type 'int'
>
> src/undo.c:
>
> 1011 static int
> 1012 undo_read_4c(bi)
> 1013 bufinfo_T *bi;
> 1014 {
> 1015 #ifdef FEAT_CRYPT
> 1016 if (bi->bi_buffer != NULL)
> 1017 {
> 1018 char_u buf[4];
> 1019 int n;
> 1020
> 1021 undo_read(bi, buf, (size_t)4);
> !1022 n = (buf[0] << 24) + (buf[1] << 16) + (buf[2] << 8) + buf[3];
> 1023 return n;
> 1024 }
> 1025 #endif
> 1026 return get4c(bi->bi_fp);
> 1027 }
>
> Attached patch fixes it.
Thanks!
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