Commit Graph

5 Commits

Author SHA1 Message Date
Hans Wennborg abc1e22d65 Properly check length modfiers for %n in format strings.
llvm-svn: 161408
2012-08-07 09:13:19 +00:00
Ted Kremenek e7b9d4342b Tighten format string diagnostic and make it a bit clearer (and a bit closer to GCC's).
llvm-svn: 148579
2012-01-20 21:52:58 +00:00
Richard Trieu 553b2b2e5d Modify how the -verify flag works. Currently, the verification string and
diagnostic message are compared.  If either is a substring of the other, then
no error is given.  This gives rise to an unexpected case:

  // expect-error{{candidate function has different number of parameters}}

will match the following error messages from Clang:

  candidate function has different number of parameters (expected 1 but has 2)
  candidate function has different number of parameters

It will also match these other error messages:

  candidate function
  function has different number of parameters
  number of parameters

This patch will change so that the verification string must be a substring of
the diagnostic message before accepting.  Also, all the failing tests from this
change have been corrected.  Some stats from this cleanup:

87 - removed extra spaces around verification strings
70 - wording updates to diagnostics
40 - extra leading or trailing characters (typos, unmatched parens or quotes)
35 - diagnostic level was included (error:, warning:, or note:)
18 - flag name put in the warning (-Wprotocol)

llvm-svn: 146619
2011-12-15 00:38:15 +00:00
Hans Wennborg 772e9270f6 Make printf warnings refer to intmax_t et al. by name
in addition to underlying type.

For example, the warning for printf("%zu", 42.0);
changes from "conversion specifies type 'unsigned long'" to "conversion
specifies type 'size_t' (aka 'unsigned long')"

(This is a second attempt after r145697, which got reverted.)

llvm-svn: 146032
2011-12-07 10:33:11 +00:00
Hans Wennborg 27541dbe1a Teach format string analysis that "%zu" means size_t.
The code had it backwards, thinking size_t was signed, and using that for "%zd".

Also let the analysis get the types for (u)intmax_t while we are at it.

llvm-svn: 143099
2011-10-27 08:29:09 +00:00