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Older versions of GNU gcc do not allow 'NULL' as sentinel.

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They want (char *)NULL as sentinel.
An example is OpenBSD (confirmed on 4.3) that ships with gcc 3.3.4

This commit introduces a contstant SENTINEL which is declared as:
#define SENTINEL ((char *)NULL)

All places I could test compile on my openbsd system are converted.
Update CODING-GUIDELINES to tell about this constant.


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@124127 65c4cc65-6c06-0410-ace0-fbb531ad65f3
This commit is contained in:
Michiel van Baak
2008-06-19 20:48:33 +00:00
parent 2e0afd805b
commit 8e8359465b
13 changed files with 85 additions and 73 deletions
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3
include/asterisk/compiler.h
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@@ -65,4 +65,7 @@
#define attribute_warn_unused_result
#endif
/* Some older version of GNU gcc (3.3.5 on OpenBSD 4.3 for example) dont like 'NULL' as sentinel */
#define SENTINEL ((char *)NULL)
#endif /* _ASTERISK_COMPILER_H */