the latest g++ on mac is really clang with a compatibility frontend,
and claims to be clang and support all the features clang does
with -std=c++0x (which qmake by default passes in).
But if you link libstdc++ (again the default) then the library has
several gaps. Catch that.
Change-Id: I8387f8fdcfc7639538e576a2e93b2301e07086cd
Reviewed-by: Eike Ziller <eike.ziller@digia.com>
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@digia.com>
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>
Removed in f0f406ba
Required when CPLUSPLUS_NO_DEBUG_RULE is uncommented
Change-Id: I18ce50a84ed1ac4a77ca0aaa9d38ef070587ce49
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>
Until now std::vector::at() was used to access the elements. This is
handy for debugging since an exception is thrown for invalid indices,
but it does not stop Qt Creator from crashing because exceptions are not
caught.
This is especially a problem for the parser, which has to look ahead via
LA(n), which accesses TranslationUnit::_tokens.
With this patch, explicit bounds checking is done before accessing the
elements and thus calls to
std::vector::at() // bounds checking, throwing out_of_range
were replaced by calls to
std::vector::operator[]() // no bounds checking, not throwing out_of_range
Measuring the parse time for the Qt Creator project shows that there is
no slowdown. In both cases, with and without the patch, about 15s are
needed on the authors machine.
Task-number: QTCREATORBUG-10453
Change-Id: I32b12a526ff7199bcadfc21a3deb5354063a3e3b
Reviewed-by: Erik Verbruggen <erik.verbruggen@digia.com>
Be more environment friendly by using less trees.
Change-Id: I54d3b23d697a3b72a6a803688a8da0eddaad3e17
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>
Summary of most relevant items:
- Preprocessor output format change. No more gen true/false. Instead
a more intuitive and natural expansion (like from a real compiler) is
performed directly corresponding to the macro invocation. Notice that
information about the generated tokens is not lost, because it's now
embedded in the expansion section header (in terms of lines and columns
as explained in the code). In addition the location on where the macro
expansion happens is also documented for future use.
- Fix line control directives and associated token line numbers.
This was not detected in tests cases because some of them were
actually wrong: Within expansions the line information was being
considered as originally computed in the macro definition, while
the desired and expected for Creator's reporting mechanism (just
like regular compilers) is the line from the expanded version
of the tokens.
- Do not allow for eager expansion. This was previously being done
inside define directives. However, it's not allowed and might
lead to incorrect results, since the argument substitution should
only happen upon the macro invocation (and following nested ones).
At least GCC and clang are consistent with that. See test case
tst_Preprocessor:dont_eagerly_expand for a detailed explanation.
- Revive the 'expanded' token flag. This is used to mark every token
that originates from a macro expansion. Notice, however, that
expanded tokens are not necessarily generated tokens (although
every generated token is a expanded token). Expanded tokens that
are not generated are those which are still considered by our
code model features, since they are visible on the editor. The
translation unit is smart enough to calculate line/column position
for such tokens based on the information from the expansion section
header.
- How expansions are tracked has also changed. Now, we simply add
two surrounding marker tokens to each "top-level" expansion
sequence. There is an enumeration that control expansion states.
Also, no "previous" token is kept around.
- Preprocessor client methods suffered a change in signature so
they now receive the line number of the action in question as
a paramater. Previously such line could be retrieved by the client
implementation by accessing the environment line. However, this
is not reliable because we try to avoid synchronization of the
output/environment lines in order to avoid unnecessary output,
while expanding macros or handling preprocessor directives.
- Although macros are not expanded during define directives (as
mentioned above) the preprocessor client is now "notified"
when it sees a macro. This is to allow usage tracking.
- Other small stuff.
This is all in one patch because the fixes are a consequence
of the change in preprocessing control.
Change-Id: I8f4c6e6366f37756ec65d0a93b79f72a3ac4ed50
Reviewed-by: Roberto Raggi <roberto.raggi@nokia.com>
they are lying. nokia has no copyright on this code. and the double
license in a single file looks weird. that's why we moved it to
3rdparty/, so it is clear it is not nokia's.
Approved-by: legal
