Bug #9702: r45488以降、SolarisStudioで ext/readline がコンパイルエラー(readline 6.2使用)

• Status: Closed
• Assignee: -
• Target version: -
• ruby -v: ruby 2.2.0dev (2014-04-04) [sparc64-solaris2.10]
• Backport: 2.0.0: DONE, 2.1: DONE

[ngoto (Naohisa Goto)]

r45488以降、Solarisにて、ext/readline が下記のようにコンパイルエラーになります。コンパイラは SolarisStudio 12.3 です。
readline 6.2 との組み合わせになります。

(前略)
cd ext/readline && exec make -w V=1 all
make[2]: Entering directory `/XXXXXXXXXX/ext/readline'
cc -I. -I../../.ext/include/sparc64-solaris2.10 -I../.././include -I../.././ext/readline -DRUBY_EXTCONF_H=\"extconf.h\"  -I/usr/local/64/lib/libffi-3.0.10/include -I/usr/local/64/include   -KPIC  -xO1 -xtarget=sparc64viiplus -m64 -o readline.o -c readline.c
"/usr/local/64/include/readline/rltypedefs.h", line 61: identifier redeclared: Function
        current : function(void) returning int
        previous: function() returning int : "/usr/local/64/include/readline/rltypedefs.h", line 34
cc: acomp failed for readline.c
make[2]: *** [readline.o] Error 2
make[2]: Leaving directory `/XXXXXXXXXX/ext/readline'
make[1]: *** [ext/readline/all] Error 2
make[1]: Leaving directory `/XXXXXXXXXX'
make: *** [build-ext] Error 2

ext/readline/extconf.rb の readline.have_type("rl_hook_func_t") に、 rl_hook_func_t は存在するはずにもかかわらず、失敗しているのが原因のようです。

extconf.h と mkmf.log を添付します。

[ngoto (Naohisa Goto)]

• Related to Bug #9578: ‘Function’ undeclared in readline.c added

[ngoto (Naohisa Goto)]

have_type() 内ではsizeof を使って型のサイズをとれるかを元に型の有無を判定しているようですが、
調べたところ、sizeof を関数（関数ポインタではなく）に使うのは未定義動作のようです。

http://stackoverflow.com/questions/12259101/why-is-the-size-of-a-function-in-c-always-1-byte

[nobu (Nobuyoshi Nakada)]

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

Applied in changeset r45518.

---

readline/extconf.rb: rl_hook_func_t

• ext/readline/extconf.rb (rl_hook_func_t): check pointer type.
  [ruby-dev:48089] [Bug #9702]

[ngoto (Naohisa Goto)]

• Related to Backport #9630: Backport readline-6.3 support. added

[nobu (Nobuyoshi Nakada)]

• Description updated (diff)
• Backport changed from 2.0.0: UNKNOWN, 2.1: UNKNOWN to 2.0.0: REQUIRED, 2.1: REQUIRED

[ngoto (Naohisa Goto)]

• Related to Backport #9631: Backport readline-6.3 support. added

[usa (Usaku NAKAMURA)]

• Backport changed from 2.0.0: REQUIRED, 2.1: REQUIRED to 2.0.0: DONE, 2.1: REQUIRED

backported into ruby_2_0_0 at r45754.

[nagachika (Tomoyuki Chikanaga)]

• Backport changed from 2.0.0: DONE, 2.1: REQUIRED to 2.0.0: DONE, 2.1: DONE

r45518 was backported to ruby_2_1 branch at r45773.