Backport #6257: [mingw] -Wshorten-64-to-32 error in io.c using clang

• Status: Closed
• Assignee: -

[jonforums (Jon Forums)]

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

[naruse (Yui NARUSE)]

• Status changed from Open to Closed
• % Done changed from 0 to 100

This issue was solved with changeset r35255.
Jon, thank you for reporting this issue.
Your contribution to Ruby is greatly appreciated.
May Ruby be with you.

---

• io.c (io_unread): cast as long the value for extra_max.
  [ruby-core:44137] [Bug #6257]

[naruse (Yui NARUSE)]

• Tracker changed from Bug to Backport
• Project changed from Ruby master to Backport193
• Category deleted (core)

[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 :)