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fix OSX build errors.

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gardners 2014-10-01 09:28:56 +09:30 committed by Jeremy Lakeman
parent 4440cf3af0
commit db5daa20ee
1 changed files with 7 additions and 1 deletions
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8
os.c
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@ -361,7 +361,13 @@ ssize_t get_self_executable_path(char *buf, size_t len)
return read_symlink("/proc/self/path/a.out", buf, len);
#elif defined (__APPLE__)
uint32_t bufsize = len;
return _NSGetExecutablePath(buf, &bufsize) || len == 0 ? bufsize : -1;
// OSX complains if the ? : operator returns fields with different signedness
// so we cast the uint32_t bufsize to signed. We should really check to make
// sure that _NSGetExecutablePath doesn't return a value in bufsize that would
// be negative when cast.
ssize_t s = _NSGetExecutablePath(buf, &bufsize);
assert(((int32_t)bufsize)>=0);
return ( s || len == 0 ) ? (int32_t)bufsize : -1;
#else
#error Unable to find executable path
#endif