[Bug libmudflap/13505] [tree-ssa] libmudflap mf-hooks2.c build failure on cygwin

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2004-06-04 20:46 -------
Ah, the problem is likely that while HAVE_UNION_SEMUN is properly undefined
for this platform, and thus "union semun" is declared in mf-hooks2.c, 
definitions of "struct semid_ds" are still required in the subsequent
MF_VALIDATE_EXTENT calls.  It looks like we need decls of "struct semid_ds"
for these platforms too.  Or perhaps the function as a whole shouldn't be
built here.

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13505