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| author | Quincey Koziol <koziol@hdfgroup.org> | 2010-05-13 23:06:45 (GMT) |
|---|---|---|
| committer | Quincey Koziol <koziol@hdfgroup.org> | 2010-05-13 23:06:45 (GMT) |
| commit | 9c1fa1d37cd301d6f7c43624d7ce88010d759402 (patch) | |
| tree | 1dcd8d9c26d8eb4dee1f7566ee5f7387c2cb346a | |
| parent | 23aa825f5ef39cec98434140551406c788fea9bc (diff) | |
| download | hdf5-9c1fa1d37cd301d6f7c43624d7ce88010d759402.zip hdf5-9c1fa1d37cd301d6f7c43624d7ce88010d759402.tar.gz hdf5-9c1fa1d37cd301d6f7c43624d7ce88010d759402.tar.bz2 | |
[svn-r18800] Description:
Added note about use of volatile for variables.
Added blurb to release notes about fixing strict-aliasing problems.
Tested on:
None - trivial change to comment.
| -rw-r--r-- | release_docs/RELEASE.txt | 3 | ||||
| -rw-r--r-- | src/H5detect.c | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/release_docs/RELEASE.txt b/release_docs/RELEASE.txt index 5535ad1..e672e5b 100644 --- a/release_docs/RELEASE.txt +++ b/release_docs/RELEASE.txt @@ -118,6 +118,9 @@ Bug Fixes since HDF5-1.8.4 Configuration ------------- + - Fixed various "strict aliasing" problems, allowing higher levels + of compiler optimization (in particular, allowing '-O3' to work + with recent versions of GCC). QAK - 2010/04/26 - Fixed a bug where fractal heap IDs for attributes and shared object header messages could be incorrectly encoded in the file for files created on big-endian platforms. Please see: <put URL here> if you diff --git a/src/H5detect.c b/src/H5detect.c index 4490fb5..1eaaac0 100644 --- a/src/H5detect.c +++ b/src/H5detect.c @@ -279,6 +279,9 @@ precision (detected_t *d) * absence of implicit mantissa bit, and exponent bias and * initializes a detected_t structure with those properties. * + * Note: 'volatile' is used for the variables below to prevent the + * compiler from optimizing them away. + * * Return: void * * Programmer: Robb Matzke |