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authorRaymond Lu <songyulu@hdfgroup.org>2012-02-07 21:42:32 (GMT)
committerRaymond Lu <songyulu@hdfgroup.org>2012-02-07 21:42:32 (GMT)
commit594ee8d6403396e402a9fc405d7b19ee21cfa0f1 (patch)
treee089ad1274726bff284d17ca07f75f4ed7de0971
parentadb158fa78dedbdd631a3f6c3c0129b2802ce6af (diff)
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[svn-r21913] Issue 7829 - data conversion from "long double" to integers failed on Ubuntu with optimization. I documented it as
a known solution and provided users a way to lower down the optimization. No test.
-rw-r--r--release_docs/RELEASE.txt12
1 files changed, 12 insertions, 0 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt
index 536cdd7..ffa82be 100644
--- a/release_docs/RELEASE.txt
+++ b/release_docs/RELEASE.txt
@@ -1028,6 +1028,18 @@ SuSe Linux 2.6.5
Known Problems
==============
+* The data conversion test dt_arith.c fails in "long double" to integer
+ conversion on Ubuntu 11.10 (3.0.0.13 kernal) with GCC 4.6.1 if the library
+ is built with optimization -O3 or -O2. The older GCC (4.5) or newer kernal
+ (3.2.2 on Fedora) doesn't have the problem. Users should lower down the
+ optimization level (-O1 or -O0) by defining CFLAGS in the command line of
+ "configure" like:
+
+ CFLAGS=-O1 ./configure
+
+ It will overwrite the library's default optimization level. (Issue 7829.
+ SLU - 2012/2/7)
+
* --with-mpe configure option does not work with Mpich2. AKC - 2011/03/10)
* While working on the 1.8.6 release of HDF5, a bug was discovered that can