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8 Commits

Author SHA1 Message Date
Hans Wennborg aa8c61cf94 -Wformat-non-iso: warn about positional arguments (pr12017) 
This renames the -Wformat-non-standard flag to -Wformat-non-iso,
rewords the current warnings a bit (pointing out that a format string
is not supported by ISO C rather than being "non standard"),
and adds a warning about positional arguments.

llvm-svn: 152403
 2012-03-09 10:10:54 +00:00
Hans Wennborg c9dd946852 Warn about non-standard format strings (pr12017) 
This adds the -Wformat-non-standard flag (off by default,
enabled by -pedantic), which warns about non-standard
things in format strings (such as the 'q' length modifier,
the 'S' conversion specifier, etc.)

llvm-svn: 151154
 2012-02-22 10:17:01 +00:00
Jean-Daniel Dupas 58dab6829a When calling a non variadic format function(vprintf, vscanf, NSLogv, …), warn if the format string argument is a parameter that is not itself declared as a format string with compatible format. 
llvm-svn: 151080
 2012-02-21 20:00:53 +00:00
David Blaikie 59fe3f89cb Support all null pointer literals in format strings. 
llvm-svn: 150276
 2012-02-10 21:07:25 +00:00
Ted Kremenek dde2adec89 Enhance checking for null format string literal to take into account __null. Fixes <rdar://problem/8269537>. 
llvm-svn: 150260
 2012-02-10 19:13:51 +00:00
Jean-Daniel Dupas 6255bd14f0 Implements support of format_arg attribute on C++ member. 
llvm-svn: 149998
 2012-02-07 19:01:42 +00:00
Hans Wennborg 27a59958bd Format string warnings: don't a.k.a. wchar_t with wchar_t. 
This fixes the case where Clang would output:
 error: format specifies type 'wchar_t *' (aka 'wchar_t *')

ArgTypeResult::getRepresentativeTypeName needs to take into account
that wchar_t can be a built-in type (as opposed to in C, where it is a
typedef).

llvm-svn: 149387
 2012-01-31 14:59:59 +00:00
Hans Wennborg e5f554ac48 Support the 'a' scanf length modifier as an extension in C++. 
It should not be supported in C++11, since that uses the C99 standard
library, in which 'a' is a format specifier.

llvm-svn: 147310
 2011-12-28 13:10:50 +00:00