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Bug #10350

closed

compile error in bignum.c line 3297 with old fcc on Solaris

Added by ngoto (Naohisa Goto) about 10 years ago. Updated about 10 years ago.

Status:
Closed
Assignee:
ngoto (Naohisa Goto)
Target version:
-
ruby -v:
ruby 2.2.0dev (2014-10-09) [sparc64-solaris2.10]
Backport:
2.0.0: DONTNEED, 2.1: DONE
[ruby-dev:<unknown>]

Description

Solaris上の古い fcc (Fujitsu C compiler) 5.6 にて、以下のコンパイルエラーが発生します。

"bignum.c", line 3297: error: initialization: constant expression is expected for variable: `nlz_bits_in_msbyte_bary'

以下のように変数の宣言と初期化を別々にしたらエラーなくビルドできました。

Index: bignum.c
===================================================================
--- bignum.c    (revision 47859)
+++ bignum.c    (working copy)
@@ -3294,7 +3294,7 @@
     static const BDIGIT char_bit[1] = { CHAR_BIT };
     BDIGIT numbytes_bary[bdigit_roomof(sizeof(numbytes))];
     BDIGIT val_numbits_bary[bdigit_roomof(sizeof(numbytes) + 1)];
-    BDIGIT nlz_bits_in_msbyte_bary[1] = { nlz_bits_in_msbyte };
+    BDIGIT nlz_bits_in_msbyte_bary[1];
     BDIGIT word_numbits_bary[bdigit_roomof(sizeof(word_numbits))];
     BDIGIT div_bary[numberof(val_numbits_bary) + BIGDIVREM_EXTRA_WORDS];
     BDIGIT mod_bary[numberof(word_numbits_bary)];
@@ -3304,6 +3304,8 @@
     int sign;
     size_t numwords;
 
+    nlz_bits_in_msbyte_bary[0] = nlz_bits_in_msbyte;
+
     /*
      * val_numbits = numbytes * CHAR_BIT - nlz_bits_in_msbyte
      * div, mod = val_numbits.divmod(word_numbits)
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