================
@@ -135,6 +154,32 @@ CreateCI(const llvm::opt::ArgStringList &Argv) {
Clang->getFrontendOpts().DisableFree = false;
Clang->getCodeGenOpts().DisableFree = false;
+
+ // clang-repl always compiles position-independent code (it injects -fPIC),
+ // so a PCH that was built with a different PIC level is incompatible: mixing
+ // the two leads to relocations that may be out of range once the JIT maps
+ // code more than 2GB away. PICLevel is a "compatible" language option, so
the
+ // ASTReader would otherwise accept the mismatch silently. Reject it up front
+ // here, before any Interpreter/FrontendAction is constructed.
+ StringRef PCHInclude = Clang->getPreprocessorOpts().ImplicitPCHInclude;
+ if (!PCHInclude.empty()) {
----------------
vgvassilev wrote:
Can we make this condition also work for pcm (C++/Clang modules)? The rest of
the code should be largely the same.
https://github.com/llvm/llvm-project/pull/201286
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