"__isoc99_scanf",
"__isoc99_sscanf",
"__memcpy_chk",
+ "__sqrt_finite",
+ "__sqrtf_finite",
+ "__sqrtl_finite",
"__strdup",
"__strndup",
"__strtok_r",
"getlogin_r",
"getpwnam",
"gets",
+ "gettimeofday",
"htonl",
"htons",
"iprintf",
TLI.setUnavailable(LibFunc::getitimer);
TLI.setUnavailable(LibFunc::getlogin_r);
TLI.setUnavailable(LibFunc::getpwnam);
+ TLI.setUnavailable(LibFunc::gettimeofday);
TLI.setUnavailable(LibFunc::htonl);
TLI.setUnavailable(LibFunc::htons);
TLI.setUnavailable(LibFunc::lchown);
CustomNames = TLI.CustomNames;
}
+namespace {
+struct StringComparator {
+ /// Compare two strings and return true if LHS is lexicographically less than
+ /// RHS. Requires that RHS doesn't contain any zero bytes.
+ bool operator()(const char *LHS, StringRef RHS) const {
+ // Compare prefixes with strncmp. If prefixes match we know that LHS is
+ // greater or equal to RHS as RHS can't contain any '\0'.
+ return std::strncmp(LHS, RHS.data(), RHS.size()) < 0;
+ }
+
+ // Provided for compatibility with MSVC's debug mode.
+ bool operator()(StringRef LHS, const char *RHS) const { return LHS < RHS; }
+ bool operator()(StringRef LHS, StringRef RHS) const { return LHS < RHS; }
+ bool operator()(const char *LHS, const char *RHS) const {
+ return std::strcmp(LHS, RHS) < 0;
+ }
+};
+}
+
bool TargetLibraryInfo::getLibFunc(StringRef funcName,
LibFunc::Func &F) const {
const char **Start = &StandardNames[0];
const char **End = &StandardNames[LibFunc::NumLibFuncs];
+
+ // Filter out empty names and names containing null bytes, those can't be in
+ // our table.
+ if (funcName.empty() || funcName.find('\0') != StringRef::npos)
+ return false;
+
// Check for \01 prefix that is used to mangle __asm declarations and
// strip it if present.
- if (!funcName.empty() && funcName.front() == '\01')
+ if (funcName.front() == '\01')
funcName = funcName.substr(1);
- const char **I = std::lower_bound(Start, End, funcName);
+ const char **I = std::lower_bound(Start, End, funcName, StringComparator());
if (I != End && *I == funcName) {
F = (LibFunc::Func)(I - Start);
return true;