Commit Graph

11 Commits

Author SHA1 Message Date
Nico Weber e916c8dfe4 Revert "[Clang] Warn about 'z' printf modifier in old MSVC."
This reverts commit fe0d1b6a8a.
Makes Analysis/taint-generic.c fail on some Windows systems.
2020-01-28 09:27:54 -05:00
Simon Tatham fe0d1b6a8a [Clang] Warn about 'z' printf modifier in old MSVC.
Summary:
The 'z' length modifier, signalling that an integer format specifier
takes a `size_t` sized integer, is only supported by the C library of
MSVC 2015 and later. Earlier versions don't recognize the 'z' at all,
and respond to `printf("%zu", x)` by just printing "zu".

So, if the MS compatibility version is set to a value earlier than
MSVC2015, it's useful to warn about 'z' modifiers in printf format
strings we check.

Reviewers: aaron.ballman, lebedev.ri, rnk, majnemer, zturner

Reviewed By: aaron.ballman

Subscribers: amccarth, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D73457
2020-01-28 09:04:45 +00:00
Saleem Abdulrasool 29bf94d86f Sema: handle `wint_t` more carefully for printf checking
In the case that `win_t` is an `unsigned short` (e.g. on Windows), we would
previously incorrectly diagnose the conversion because we would immediately
promote the argument type from `wint_t` (aka `unsigned short`) to `int` before
checking if the type matched.  This should repair the Windows hosted bots.

llvm-svn: 342565
2018-09-19 18:13:34 +00:00
Saleem Abdulrasool 6183c6316d Basic: correct `__WINT_TYPE__` on Windows
Windows uses `unsigned short` for `wint_t`.  Correct the type definition as
vended by the compiler.  This type is defined in corecrt.h and is
unconditionally typedef'ed.  cl does not have an equivalent to `__WINT_TYPE__`
which is why this was never detected.

llvm-svn: 342557
2018-09-19 16:18:55 +00:00
Hans Wennborg c597b4c529 MS format strings: parse the 'Z' printf conversion specifier (PR20808)
llvm-svn: 217326
2014-09-07 03:03:51 +00:00
Hans Wennborg 1b23158ce4 MS format strings: allow the 'h' length modifier with C, C, s and S (PR20808)
llvm-svn: 217196
2014-09-04 21:39:52 +00:00
Hans Wennborg 68f42b9515 MS format strings: support the 'w' length modifier (PR20808)
llvm-svn: 217195
2014-09-04 21:39:46 +00:00
Richard Smith 1b98ccc4e9 PR20356: Fix all Sema warnings with mismatched ext_/warn_ versus
ExtWarn/Warnings. Mostly the name of the warning was changed to match the
semantics, but in the PR20356 cases, the warning was about valid code, so the
diagnostic was changed from ExtWarn to Warning instead.

llvm-svn: 213443
2014-07-19 01:39:17 +00:00
David Majnemer ee7e86c08f Typo.
llvm-svn: 188996
2013-08-22 10:04:41 +00:00
David Majnemer a39da8e236 Analysis: Make %I in printf more reasonable, add more tests
llvm-svn: 188992
2013-08-22 07:53:21 +00:00
David Majnemer 3cba495abc Analysis: Add support for MS specific printf format specifiers
Summary: Adds support for %I, %I32 and %I64.

Reviewers: hans, jordan_rose, rnk, majnemer

Reviewed By: majnemer

CC: cfe-commits, cdavis5x

Differential Revision: http://llvm-reviews.chandlerc.com/D1456

llvm-svn: 188937
2013-08-21 21:54:46 +00:00