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fix-it hint is much worse than no fix-it hint. (Fixes PR4084).
When we need to truncate a source line to fix in the terminal, make
sure to take the width of the fix-it information into account, too.
llvm-svn: 70656
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show an ellipsis where we have removed text. An example:
/Users/dgregor/Projects/llvm/tools/clang/test/Misc/message-length.c:18:120:
warning:
comparison of distinct pointer types ('int *' and 'float *')
...a_func_to_call(ip == FloatPointer, ip[ALongIndexName], ...
~~ ^ ~~~~~~~~~~~~
llvm-svn: 70655
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word-wrapping by default in Emacs; yay!). Thanks, Daniel.
Use LLVM's System layer rather than calling isatty() directly.
Fix a thinko in printing the indentation string that was causing some
weird output.
llvm-svn: 70654
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might be wider than we're supposed to print. In this case, we try to
select the "important" subregion of the source line, which contains
everything that we want to show (e.g., with underlining and the caret
itself) and tries to also contain some of the context.
From the fantastically long line in the test case, we get an error
message that slices down to this:
message-length.c:18:120: warning: comparison of distinct pointer types
('int *' and 'float *')
a_func_to_call(ip == FloatPointer, ip[ALongIndexName],
~~ ^ ~~~~~~~~~~~~
There are a bunch of gee-it-sounds-good heuristics in here, which seem
to do well on the various simple tests I've thrown at it. However,
we're going to need to look at a bunch more diagnostics to tweak these
heuristics.
This is the second part of <rdar://problem/6711348>. Almost there!
llvm-svn: 70597
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Also, put a line of whitespace between the diagnostic and the source
code/caret line when the start of the actual source code text lines up
(or nearly lines up) with the most recent line of the diagnostic. For
example, here it's okay for the last line of the diagnostic to be
(vertically) next to the source line, because there is horizontal
whitespace to separate them:
decl-expr-ambiguity.cpp:12:16: error: function-style cast to a builtin
type can only take one argument
typeof(int)(a,5)<<a;
However, here is a case where we need the vertical separation (since
there is no horizontal separation):
message-length.c:10:46: warning: incompatible pointer types initializing 'void
(int, float, char, float)', expected 'int (*)(int, float, short,
float)'
int (*fp1)(int, float, short, float) = f;
This is part one of <rdar://problem/6711348>.
llvm-svn: 70578
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lines that clang extracts from the source code so that machine parsing can
easily ignore them.
llvm-svn: 70337
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-fno-show-location, patch by Alexei Svitkine (PR4024)
llvm-svn: 69657
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mode, just ignore them as usual.
llvm-svn: 69558
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rdar://6805442
llvm-svn: 69525
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it everywhere.
llvm-svn: 69269
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passing down the right info yet.
llvm-svn: 69268
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This allows it to accurately measure tokens, so that we get:
t.cpp:8:13: error: unknown type name 'X'
static foo::X P;
~~~~~^
instead of the woefully inferior:
t.cpp:8:13: error: unknown type name 'X'
static foo::X P;
~~~~ ^
Most of this is just plumbing to push the reference around.
llvm-svn: 69099
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defaults to off. When enabled, it emits range info along
with the file/line/col information for a diagnostic. This
allows tools that textually parse the output of clang to know
where the ranges are, even if they span multiple lines. For
example, with:
$ clang exprs.c -fprint-source-range-info
We now produce:
exprs.c:21:11:{21:12-21:13}: warning: use of unary operator that may be intended as compound assignment (+=)
var =+ 5; // expected-warning {{use of unary operator that may be intended as compound assignment (+=)}}
^~
exprs.c:22:11:{22:12-22:13}: warning: use of unary operator that may be intended as compound assignment (-=)
var =- 5; // expected-warning {{use of unary operator that may be intended as compound assignment (-=)}}
^~
exprs.c:36:13:{36:3-36:12}: error: assignment to cast is illegal, lvalue casts are not supported
(float*)X = P; // expected-error {{assignment to cast is illegal, lvalue casts are not supported}}
~~~~~~~~~ ^
exprs.c:41:4:{41:3-41:4}: error: called object type 'int' is not a function or function pointer
X(); // expected-error {{called object type 'int' is not a function or function pointer}}
~^
exprs.c:45:15:{45:8-45:14}{45:17-45:24}: error: invalid operands to binary expression ('int *' and '_Complex float')
P = (P-42) + Gamma*4; // expected-error {{invalid operands to binary expression ('int *' and '_Complex float')}}
~~~~~~ ^ ~~~~~~~
exprs.c:61:7:{61:16-61:22}: error: invalid application of '__alignof' to bitfield
R = __alignof(P->x); // expected-error {{invalid application of '__alignof' to bitfield}} expected-warning {{extension used}}
^ ~~~~~~
Note the range info after the column in the initial diagnostic.
This is obviously really annoying if you're not a tool parsing the
output of clang, which is why it is off by default.
llvm-svn: 66862
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context of a template-id for which we need to instantiate default
template arguments.
In the TextDiagnosticPrinter, don't suppress the caret diagnostic if
we are producing a non-note diagnostic that follows a note diagnostic
with the same location, because notes are (conceptually) a part of the
warning or error that comes before them.
llvm-svn: 66572
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end of line instead of just the end of buffer. Scratch buffers contain
embedded \0's between tokens which are logic line separators. If a
normal text buffer contains \0's, it doesn't make a lot of sense to include
them in the caret diag output anyway.
llvm-svn: 66374
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llvm-svn: 65869
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driver taking lib/Driver.
llvm-svn: 65811
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