[PATCH] D62115: fix a issue that clang is incompatible with gcc with -H option.

[Kan Shengchen via Phabricator via cfe-commits]

skan updated this revision to Diff 200634.
skan added a comment.

add a test for including headfile outside current directory.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D62115/new/

https://reviews.llvm.org/D62115

Files:
  lib/Frontend/HeaderIncludeGen.cpp
  test/Frontend/clang_H_opt.c


Index: test/Frontend/clang_H_opt.c
===================================================================
--- /dev/null
+++ test/Frontend/clang_H_opt.c
@@ -0,0 +1,10 @@
+// RUN: %clang -H -fsyntax-only %s 2>&1 | FileCheck %s
+
+#include "../Index/Inputs/empty.h"
+#include "Inputs/empty.h"
+
+// CHECK: .
+// CHECK-SAME: ../Index/Inputs/empty.h
+// CHECK: .
+// CHECK-NOT: ./
+// CHECK-SAME: Inputs/empty.h
Index: lib/Frontend/HeaderIncludeGen.cpp
===================================================================
--- lib/Frontend/HeaderIncludeGen.cpp
+++ lib/Frontend/HeaderIncludeGen.cpp
@@ -51,6 +51,10 @@
 static void PrintHeaderInfo(raw_ostream *OutputFile, StringRef Filename,
                             bool ShowDepth, unsigned CurrentIncludeDepth,
                             bool MSStyle) {
+  // Simplify Filename that starts with "./"
+  if (Filename.startswith("./"))
+    Filename = Filename.substr(2);
+
   // Write to a temporary string to avoid unnecessary flushing on errs().
   SmallString<512> Pathname(Filename);
   if (!MSStyle)


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