Use the name of the file on disk to issue a new diagnostic about non-portable #include and #import paths.

Differential Revision: http://reviews.llvm.org/D19843
Corresponding LLVM change: http://reviews.llvm.org/D19842

Re-commit of r272562 after addressing clang-x86-win2008-selfhost failure.

llvm-svn: 272584

4 files changed, 71 insertions, 0 deletions

diff --git a/clang/test/Lexer/Inputs/case-insensitive-include.h b/clang/test/Lexer/Inputs/case-insensitive-include.h
new file mode 100644
index 00000000000..954090fc93b
--- /dev/null
+++ b/clang/test/Lexer/Inputs/case-insensitive-include.h
@@ -0,0 +1,8 @@
+#ifndef CASE_INSENSITIVE_INCLUDE_H
+#define CASE_INSENSITIVE_INCLUDE_H
+
+struct S {
+  int x;
+};
+
+#endif
diff --git a/clang/test/Lexer/case-insensitive-include-ms.c b/clang/test/Lexer/case-insensitive-include-ms.c
new file mode 100644
index 00000000000..86bd8bba68e
--- /dev/null
+++ b/clang/test/Lexer/case-insensitive-include-ms.c
@@ -0,0 +1,18 @@
+// REQUIRES: case-insensitive-filesystem
+
+// RUN: mkdir -p %T/apath
+// RUN: cp %S/Inputs/case-insensitive-include.h %T
+// RUN: cd %T
+// RUN: %clang_cc1 -fsyntax-only -fms-compatibility %s -include %s -I %T -verify
+// RUN: %clang_cc1 -fsyntax-only -fms-compatibility -fdiagnostics-parseable-fixits %s -include %s -I %T 2>&1 | FileCheck %s
+
+#include "..\Output\.\case-insensitive-include.h"
+#include "..\Output\.\Case-Insensitive-Include.h" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:50}:"\"..\\Output\\.\\case-insensitive-include.h\""
+#include "..\output\.\case-insensitive-include.h" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:50}:"\"..\\Output\\.\\case-insensitive-include.h\""
+
+#include "apath\..\.\case-insensitive-include.h"
+#include "apath\..\.\Case-Insensitive-Include.h" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:49}:"\"apath\\..\\.\\case-insensitive-include.h\""
+#include "APath\..\.\case-insensitive-include.h" // For the sake of efficiency, this case is not diagnosed. :-(
diff --git a/clang/test/Lexer/case-insensitive-include.c b/clang/test/Lexer/case-insensitive-include.c
new file mode 100644
index 00000000000..13e5b599426
--- /dev/null
+++ b/clang/test/Lexer/case-insensitive-include.c
@@ -0,0 +1,35 @@
+// REQUIRES: case-insensitive-filesystem
+
+// RUN: mkdir -p %T/apath
+// RUN: mkdir -p %T/asystempath
+// RUN: cp %S/Inputs/case-insensitive-include.h %T
+// RUN: cp %S/Inputs/case-insensitive-include.h %T/asystempath/case-insensitive-include2.h
+// RUN: cd %T
+// RUN: %clang_cc1 -fsyntax-only %s -include %s -I %T -isystem %T/asystempath -verify
+// RUN: %clang_cc1 -fsyntax-only -fdiagnostics-parseable-fixits %s -include %s -I %T -isystem %T/asystempath 2>&1 | FileCheck %s
+
+// Known standard header, so warn:
+#include <StdDef.h> // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:20}:"<stddef.h>"
+
+#include "case-insensitive-include.h"
+#include "Case-Insensitive-Include.h" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:38}:"\"case-insensitive-include.h\""
+
+#include "../Output/./case-insensitive-include.h"
+#include "../Output/./Case-Insensitive-Include.h" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:50}:"\"../Output/./case-insensitive-include.h\""
+#include "../output/./case-insensitive-include.h" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:50}:"\"../Output/./case-insensitive-include.h\""
+
+#include "apath/.././case-insensitive-include.h"
+#include "apath/.././Case-Insensitive-Include.h" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:49}:"\"apath/.././case-insensitive-include.h\""
+#include "APath/.././case-insensitive-include.h" // For the sake of efficiency, this case is not diagnosed. :-(
+
+#include "../Output/./apath/.././case-insensitive-include.h"
+#include "../Output/./APath/.././case-insensitive-include.h" // For the sake of efficiency, this case is not diagnosed. :-(
+#include "../output/./apath/.././case-insensitive-include.h" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:61}:"\"../Output/./apath/.././case-insensitive-include.h\""
+
+#include "CASE-INSENSITIVE-INCLUDE2.H" // Found in an -isystem directory. No warning.
diff --git a/clang/test/Lexer/case-insensitive-system-include.c b/clang/test/Lexer/case-insensitive-system-include.c
new file mode 100644
index 00000000000..9d5289cda2d
--- /dev/null
+++ b/clang/test/Lexer/case-insensitive-system-include.c
@@ -0,0 +1,10 @@
+// REQUIRES: case-insensitive-filesystem
+
+// RUN: mkdir -p %T/asystempath
+// RUN: cp %S/Inputs/case-insensitive-include.h %T/asystempath/
+// RUN: cd %T
+// RUN: %clang_cc1 -fsyntax-only %s -include %s -isystem %T/asystempath -verify -Wnonportable-system-include-path
+// RUN: %clang_cc1 -fsyntax-only -fdiagnostics-parseable-fixits %s -include %s -isystem %T/asystempath -Wnonportable-system-include-path 2>&1 | FileCheck %s
+
+#include "CASE-INSENSITIVE-INCLUDE.H" // expected-warning {{non-portable path}}
+// CHECK: fix-it:"{{.*}}":{[[@LINE-1]]:10-[[@LINE-1]]:38}:"\"case-insensitive-include.h\""