[PATCH] D126266: Mark the file entry invalid, until reread. Invalidate SLocEntry cache, readd it on reread. Do not use translateFile, because it pulls in parts of the pch.

[Vassil Vassilev via Phabricator via cfe-commits]

v.g.vassilev added a comment.

After landing https://reviews.llvm.org/D126682 we might be able to write a test 
in clang-repl such as:

  cpp
  clang-repl> #include <iostream>
  clang-repl> #include <fstream>
  clang-repl>using namespace std;
  clang-repl> int write_str (const char* str) {
    ofstream myfile;
    myfile.open ("a.h");
    myfile << str<<"\n";
    myfile.close();
    return 0;
  }
  clang-repl> auto r1 = write_str("int i = 42");
  clang-repl> extern "C" int printf(const char*,...);
  clang-repl> #include "a.h"
  clang-repl> auto r2 = printf("i=%d\n", i);
  clang-repl>%undo
  clang-repl>%undo 
  clang-repl> auto r3 = write_str("int i = 0");
  clang-repl> #include "a.h"
  clang-repl> auto r2 = printf("i=%d\n", i);
  // Here we should print `i=0`.


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D126266/new/

https://reviews.llvm.org/D126266

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