Fix a bug in !subst where TableGen would go and resubstitute text it had
just substituted. This could cause infinite looping in certain
pathological cases.
llvm-svn: 91843
diff --git a/llvm/utils/TableGen/Record.cpp b/llvm/utils/TableGen/Record.cpp
index 53f9014..542735e 100644
--- a/llvm/utils/TableGen/Record.cpp
+++ b/llvm/utils/TableGen/Record.cpp
@@ -945,11 +945,13 @@
std::string Val = RHSs->getValue();
std::string::size_type found;
+ std::string::size_type idx = 0;
do {
- found = Val.find(LHSs->getValue());
+ found = Val.find(LHSs->getValue(), idx);
if (found != std::string::npos) {
Val.replace(found, LHSs->getValue().size(), MHSs->getValue());
}
+ idx = found + MHSs->getValue().size();
} while (found != std::string::npos);
return new StringInit(Val);