Issue #6257 has been updated by jonforums (Jon Forums).


ruby_1_9_3 now builds and passes `make test` using clang 3.1 (trunk 154297) + MinGW 4.6.2 on Win7 32bit :)
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Backport #6257: [mingw] -Wshorten-64-to-32 error in io.c using clang
https://bugs.ruby-lang.org/issues/6257#change-25732

Author: jonforums (Jon Forums)
Status: Closed
Priority: Normal
Assignee: 
Category: 
Target version: 


Building trunk@35349 on Win7 32bit with clang 3.1 (trunk build on Win7) + MinGW GCC 4.6.2 I get the following error:

C:\Users\Jon\Documents\RubyDev\ruby-git\build>sh -c "../configure --enable-shared --disable-install-doc --with-gcc=c:/clang/bin/clang.exe"
C:\Users\Jon\Documents\RubyDev\ruby-git\build>make
...
compiling ../io.c
../io.c:458:21: error: implicit conversion loses integer precision: 'long long' to 'long'
      [-Werror,-Wshorten-64-to-32]
    extra_max = pos - fptr->rbuf.len;
              ~ ~~~~^~~~~~~~~~~~~~~~
1 error generated.
make: *** [io.o] Error 1


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