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| author | Paul Eggert <eggert@cs.ucla.edu> | 2003-10-16 18:28:06 +0000 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2003-10-16 18:28:06 +0000 |
| commit | 7fd2829dd83186fadc9cc23de2859c5819ce8337 (patch) | |
| tree | fbc9ff8f25bb506c1b7642d0304de517bf548e2f /README | |
| parent | 11312bf3714ccee407ff2c160b0f7dd17f728d47 (diff) | |
| download | gnulib-7fd2829dd83186fadc9cc23de2859c5819ce8337.tar.gz | |
(foo *) NULL + 0 == NULL
Diffstat (limited to 'README')
| -rw-r--r-- | README | 3 |
1 files changed, 3 insertions, 0 deletions
@@ -133,6 +133,9 @@ as well. GNULib code makes the following additional assumptions: * Objects with all bits zero are treated as 0 or NULL. For example, memset (A, 0, sizeof A) initializes an array A of pointers to NULL. + * Adding zero to a null pointer does not change the pointer. + For example, 0 + (char *) NULL == (char *) NULL. + The above assumptions are not required by the C or POSIX standards but hold on all practical porting targets that we're familiar with. If you have a porting target where these assumptions are not true, we'd |