[cfe-commits] Patch: Add flags to print or omit the include stacks of notes.

[Richard Trieu]

This patch adds flags to print or omit the include stacks of notes.  These
stacks are less helpful in notes than those in errors and warnings.  Below
is the current output on an error, and how it will show up when the include
stack is disabled.

Current behavior:

test/test.cpp:9:10: error: no matching function for
      call to 'foo'
  return foo(1, 1);
         ^~~
In file included from test/test.cpp:7:
In file included from test/include7.h:1:
In file included from test/include6.h:1:
In file included from test/include5.h:1:
In file included from test/include4.h:1:
In file included from test/include3.h:1:
In file included from test/include2.h:1:
include1.h:1:5: note: candidate function not viable: requires 1
      argument, but 2 were provided
int foo(int x) { return x; }


With new flag to omit note include stacks:

test/test.cpp:9:10: error: no matching function for
      call to 'foo'
  return foo(1, 1);
         ^~~
include1.h:1:5: note: candidate function not viable: requires 1
      argument, but 2 were provided
int foo(int x) { return x; }
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