Bug#752122: idba: FTBFS with clang instead of gcc

[Alexander Ovchinnikov]

Package: idba
Severity: minor
Tags: patch
User: pkg-llvm-t...@lists.alioth.debian.org
Usertags: clang-ftbfs

Hello,

Using the rebuild infrastructure, your package fails to build with clang 
(instead of gcc).

We detected this kinf of error:
http://clang.debian.net/status.php?version=3.4.2&key=NON-POD

Full build log is available here:
http://clang.debian.net/logs/2014-06-16/idba_1.1.1-2_unstable_clang.log

Thanks,
Alexander

-- System Information:
Debian Release: jessie/sid
  APT prefers unstable
  APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 3.13-1-amd64 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

--- idba-1.1.1/src/tools/parallel_rna_blat.cpp	2013-07-23 14:27:57.000000000 -0400
+++ idba-1.1.1-my/src/tools/parallel_rna_blat.cpp	2014-06-19 17:08:02.373666423 -0400
@@ -61,7 +61,7 @@
 
 void SplitSequenceFile()
 {
-    FastaWriter writers[num_threads];
+    FastaWriter *writers = static_cast<FastaWriter *>(alloca(sizeof(FastaWriter) * num_threads));
     for (int i = 0; i < num_threads; ++i)
         writers[i].Open(split_files[i]);
 
--- idba-1.1.1/src/release/parallel_blat.cpp	2013-07-23 14:27:57.000000000 -0400
+++ idba-1.1.1-my/src/release/parallel_blat.cpp	2014-06-19 17:09:06.758253507 -0400
@@ -61,7 +61,7 @@
 
 void SplitSequenceFile()
 {
-    FastaWriter writers[num_threads];
+    FastaWriter *writers = static_cast<FastaWriter *>(alloca(sizeof(FastaWriter) * num_threads));
     for (int i = 0; i < num_threads; ++i)
         writers[i].Open(split_files[i]);