[PATCH] D149824: [clang][Interp] Don't call getSource() on functions without a body

[Timm Bäder via Phabricator via cfe-commits]

tbaeder created this revision.
tbaeder added reviewers: aaron.ballman, erichkeane, tahonermann, shafik.
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  For builtin functions, we create a Function instance without a body or
  code. When emitting diagnostics from them, we need a proper SourceInfo
  to point to, but the only thing we can use is the call site of the
  builtin function.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D149824

Files:
  clang/lib/AST/Interp/EvalEmitter.h
  clang/lib/AST/Interp/Function.cpp


Index: clang/lib/AST/Interp/Function.cpp
===================================================================
--- clang/lib/AST/Interp/Function.cpp
+++ clang/lib/AST/Interp/Function.cpp
@@ -32,6 +32,7 @@
 SourceInfo Function::getSource(CodePtr PC) const {
   assert(PC >= getCodeBegin() && "PC does not belong to this function");
   assert(PC <= getCodeEnd() && "PC Does not belong to this function");
+  assert(hasBody());
   unsigned Offset = PC - getCodeBegin();
   using Elem = std::pair<unsigned, SourceInfo>;
   auto It = llvm::lower_bound(SrcMap, Elem{Offset, {}}, llvm::less_first());
Index: clang/lib/AST/Interp/EvalEmitter.h
===================================================================
--- clang/lib/AST/Interp/EvalEmitter.h
+++ clang/lib/AST/Interp/EvalEmitter.h
@@ -71,7 +71,7 @@
 
   /// Returns the source location of the current opcode.
   SourceInfo getSource(const Function *F, CodePtr PC) const override {
-    return F ? F->getSource(PC) : CurrentSource;
+    return (F && F->hasBody()) ? F->getSource(PC) : CurrentSource;
   }
 
   /// Parameter indices.


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