Issue #12383 has been updated by Nobuyoshi Nakada.


> /cygdrive/i/szsz/tmpp/gcc/gcc-5.3.0-3.x86_64/src/gcc-5.3.0/configure

Seems older a little.

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Bug #12383: Warnings when compiling proc.c on cygwin
https://bugs.ruby-lang.org/issues/12383#change-58645

* Author: Martin Drst
* Status: Open
* Priority: Normal
* Assignee: Nobuyoshi Nakada
* ruby -v: ruby 2.4.0dev (2016-05-15 trunk 55004) [x86_64-cygwin]
* Backport: 2.1: UNKNOWN, 2.2: UNKNOWN, 2.3: UNKNOWN
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When compiling ruby on cygwin, I get the following warnings for proc.c:

```
compiling proc.c
proc.c: In function °∆call_method_data_safe°«:
proc.c:1984:11: warning: variable °∆result°« might be clobbered by °∆longjmp°« or °∆vfork°« [-Wclobbered]
     VALUE result = Qnil; /* OK */
           ^
proc.c: At top level:
cc1: warning: unrecognized command line option °∆-Wno-self-assign°«
cc1: warning: unrecognized command line option °∆-Wno-constant-logical-operand°«
cc1: warning: unrecognized command line option °∆-Wno-parentheses-equality°«
cc1: warning: unrecognized command line option °∆-Wno-tautological-compare°«
compiling random.c
```



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