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[Tooling] Clear the PreambleSrcLocCache when preamble is discarded during reparsing 

This ensures that diagnostics are not remapped to incorrect preamble locations after
the second reparse with a remapped header file occurs.

rdar://37502480


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@327322 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Alex Lorenz 2018-03-12 19:36:29 +00:00
parent ed0ca152fb
commit 07fe671aaa
5 changed files with 17 additions and 0 deletions
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1
lib/Frontend/ASTUnit.cpp
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@ -1259,6 +1259,7 @@ ASTUnit::getMainBufferWithPrecompiledPreamble(
Preamble.reset();
PreambleDiagnostics.clear();
TopLevelDeclsInPreamble.clear();
PreambleSrcLocCache.clear();
PreambleRebuildCounter = 1;
}
}

3
test/Index/Inputs/reparse-issue.h Normal file
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@ -0,0 +1,3 @@
asdf;

4
test/Index/Inputs/reparse-issue.h-0 Normal file
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@ -0,0 +1,4 @@
//
//
asdf;

5
test/Index/Inputs/reparse-issue.h-1 Normal file
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@ -0,0 +1,5 @@
//
//
//
asdf;

4
test/Index/reparsed-live-issue.cpp Normal file
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@ -0,0 +1,4 @@
// RUN: CINDEXTEST_EDITING=1 LIBCLANG_DISABLE_CRASH_RECOVERY=1 c-index-test -test-load-source-reparse 2 none -remap-file-0=%S/Inputs/reparse-issue.h,%S/Inputs/reparse-issue.h-0 -remap-file-1=%S/Inputs/reparse-issue.h,%S/Inputs/reparse-issue.h-1 -- %s 2>&1 | FileCheck %s
#include "Inputs/reparse-issue.h"
// CHECK: reparse-issue.h:4:1:{1:1-1:1}: error: C++ requires a type specifier for all declarations