[ruby-trunk - Bug #7946][Open] 1.9.3-p385以降でclangでのビルド時にエラー(error: implicit conversion loses integer

Issue #7946 has been reported by d6rkaiz (Isao Sugimoto).


Bug #7946: 1.9.3-p385以降でclangでのビルド時にエラー(error: implicit conversion loses
integer precision)
https://bugs.ruby-lang.org/issues/7946

Author: d6rkaiz (Isao Sugimoto)
Status: Open
Priority: Normal
Assignee:
Category:
Target version:
ruby -v: 1.9.3-p385 later

=begin

OS X 10.8.2でclangでビルドを行う際にruby 1.9.3-p385以降でclangでコンパイル時にエラーとなるようになりました。

バグとのことですので報告します。
1.9.3-p385 および 1.9.3-p392 で発生します。

 BUILD FAILED

 Inspect or clean up the working tree at 

/var/folders/t0/n008mdzj4nz0_cswflz6xwch0000gn/T/ruby-build.20130223143931.52037
Results logged to
/var/folders/t0/n008mdzj4nz0_cswflz6xwch0000gn/T/ruby-build.20130223143931.52037.log

 Last 10 log lines:
 compiling safe.c
 compiling signal.c
 compiling sprintf.c
 compiling st.c
 st.c:520:35: error: implicit conversion loses integer precision: 

‘st_index_t’ (aka ‘unsigned long’) to ‘int’ [-Werror,-Wshorten-64-to-32]
i = table->num_entries++;
~ ~~~~~~~~~~~~~~~~~~^~
1 error generated.
make: *** [st.o] Error 1
make: *** Waiting for unfinished jobs…

clangのバージョンなど

 $ clang -v
 Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)
 Target: x86_64-apple-darwin12.2.1
 Thread model: posix

参考 http://qiita.com/items/e7c4374d25ba2056a7b7

=end

Issue #7946 has been updated by sorah (Shota F.).

Assignee set to mrkn (Kenta M.)


Bug #7946: 1.9.3-p385以降でclangでのビルド時にエラー(error: implicit conversion loses
integer precision)
https://bugs.ruby-lang.org/issues/7946#change-36948

Author: d6rkaiz (Isao Sugimoto)
Status: Open
Priority: Normal
Assignee: mrkn (Kenta M.)
Category:
Target version:
ruby -v: 1.9.3-p385 later

=begin

OS X 10.8.2でclangでビルドを行う際にruby 1.9.3-p385以降でclangでコンパイル時にエラーとなるようになりました。

バグとのことですので報告します。
1.9.3-p385 および 1.9.3-p392 で発生します。

 BUILD FAILED

 Inspect or clean up the working tree at 

/var/folders/t0/n008mdzj4nz0_cswflz6xwch0000gn/T/ruby-build.20130223143931.52037
Results logged to
/var/folders/t0/n008mdzj4nz0_cswflz6xwch0000gn/T/ruby-build.20130223143931.52037.log

 Last 10 log lines:
 compiling safe.c
 compiling signal.c
 compiling sprintf.c
 compiling st.c
 st.c:520:35: error: implicit conversion loses integer precision: 

‘st_index_t’ (aka ‘unsigned long’) to ‘int’ [-Werror,-Wshorten-64-to-32]
i = table->num_entries++;
~ ~~~~~~~~~~~~~~~~~~^~
1 error generated.
make: *** [st.o] Error 1
make: *** Waiting for unfinished jobs…

clangのバージョンなど

 $ clang -v
 Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)
 Target: x86_64-apple-darwin12.2.1
 Thread model: posix

参考 http://qiita.com/items/e7c4374d25ba2056a7b7

=end

Issue #7946 has been updated by naruse (Yui NARUSE).

I noticed that clang version 4.1 doesn’t fail.

% clang --version
Apple clang version 4.1 (tags/Apple/clang-421.11.66) (based on LLVM
3.1svn)
Target: x86_64-apple-darwin12.2.1
Thread model: posix

But clang version 4.2 fails.

% clang --version
Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)
Target: x86_64-apple-darwin12.2.1
Thread model: posix

Anyway Ruby should avoid this.

Bug #7946: 1.9.3-p385以降でclangでのビルド時にエラー(error: implicit conversion loses
integer precision)
https://bugs.ruby-lang.org/issues/7946#change-36951

Author: d6rkaiz (Isao Sugimoto)
Status: Open
Priority: Normal
Assignee: mrkn (Kenta M.)
Category:
Target version:
ruby -v: 1.9.3-p385 later

=begin

OS X 10.8.2でclangでビルドを行う際にruby 1.9.3-p385以降でclangでコンパイル時にエラーとなるようになりました。

バグとのことですので報告します。
1.9.3-p385 および 1.9.3-p392 で発生します。

 BUILD FAILED

 Inspect or clean up the working tree at 

/var/folders/t0/n008mdzj4nz0_cswflz6xwch0000gn/T/ruby-build.20130223143931.52037
Results logged to
/var/folders/t0/n008mdzj4nz0_cswflz6xwch0000gn/T/ruby-build.20130223143931.52037.log

 Last 10 log lines:
 compiling safe.c
 compiling signal.c
 compiling sprintf.c
 compiling st.c
 st.c:520:35: error: implicit conversion loses integer precision: 

‘st_index_t’ (aka ‘unsigned long’) to ‘int’ [-Werror,-Wshorten-64-to-32]
i = table->num_entries++;
~ ~~~~~~~~~~~~~~~~~~^~
1 error generated.
make: *** [st.o] Error 1
make: *** Waiting for unfinished jobs…

clangのバージョンなど

 $ clang -v
 Apple LLVM version 4.2 (clang-425.0.24) (based on LLVM 3.2svn)
 Target: x86_64-apple-darwin12.2.1
 Thread model: posix

参考 http://qiita.com/items/e7c4374d25ba2056a7b7

=end

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