Commit Graph

9 Commits

Author SHA1 Message Date
Jordan Rose 3c14b2339d -Wformat: Don't check format strings in uninstantiated templates.
Also applies to -Wnonnull, -Wtype-safety, and -Wnon-pod-varargs.
All of these can be better checked at instantiation time.

This change does not actually affect regular CallExpr function calls,
since the checks there only happen after overload resolution.
However, it will affect Objective-C method calls.

<rdar://problem/12373934>

llvm-svn: 164984
2012-10-02 01:49:54 +00:00
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