Commit Graph

12 Commits

Author SHA1 Message Date
Matt Beaumont-Gay c622163b0f Only warn in -Wliteral-conversion if the conversion loses information
llvm-svn: 141955
2011-10-14 15:36:25 +00:00
Chandler Carruth 016ef400c4 Enhance the diagnostic for literal float -> int conversions to suggest
rewriting the literal when the value is integral. It is not uncommon to
see code written as:

  const int kBigNumber = 42e5;

Without any real awareness that this is no longer an ICE. The note helps
automate and ease the process of fixing code that violates the warning.

llvm-svn: 129243
2011-04-10 08:36:24 +00:00
Chandler Carruth 22c7a79a1d Implement a sub-group of -Wconversion: -Wliteral-conversion. This
specifically targets literals which are implicitly converted, a those
are more often unintended and trivial to fix. This can be especially
helpful for diagnosing what makes 'const int x = 1e6' not an ICE.

Original patch authored by Jim Meehan with contributions from other
Googlers and a few cleanups from myself.

llvm-svn: 125745
2011-02-17 11:05:49 +00:00
Douglas Gregor 59f16ed082 Look through the address-of operator to find the function being
called. Fixes another aspect of PR8314.

llvm-svn: 117308
2010-10-25 20:48:33 +00:00
Douglas Gregor 8e09a72f13 When we're calling a function that we know based on its K&R-style
function definition, we should still use a prototype to type-check and
convert the function arguments, if such a prototype exists. Fixes
PR8314.

llvm-svn: 117305
2010-10-25 20:39:23 +00:00
Chris Lattner 53fa04909c make clang print types as "const int *" instead of "int const*",
which is should have done from the beginning.  As usual, the most
fun with this sort of change is updating all the testcases.

llvm-svn: 113090
2010-09-05 00:04:01 +00:00
Douglas Gregor 17ea3f5dbd Allow a looser form of compatibility checking (which ignores
qualifiers) when checking a K&R function definition against a previous
prototype. Fixes <rdar://problem/8193107>.

llvm-svn: 109751
2010-07-29 15:18:02 +00:00
Daniel Dunbar 8fbe78f6fc Update tests to use %clang_cc1 instead of 'clang-cc' or 'clang -cc1'.
- This is designed to make it obvious that %clang_cc1 is a "test variable"
   which is substituted. It is '%clang_cc1' instead of '%clang -cc1' because it
   can be useful to redefine what gets run as 'clang -cc1' (for example, to set
   a default target).

llvm-svn: 91446
2009-12-15 20:14:24 +00:00
Douglas Gregor d8e97def58 When calling a function without a prototype for which we have a
definition, warn if there are too many/too few function call
arguments.

llvm-svn: 68318
2009-04-02 15:37:10 +00:00
Daniel Dunbar a45cf5b6b0 Rename clang to clang-cc.
Tests and drivers updated, still need to shuffle dirs.

llvm-svn: 67602
2009-03-24 02:24:46 +00:00
Douglas Gregor a74a29771f Implement GNU C semantics for K&R function definitions that follow a
prototype of the same function, where the promoted parameter types in
the K&R definition are not compatible with the types in the
prototype. Fixes PR2821.

llvm-svn: 66301
2009-03-06 22:43:54 +00:00
Douglas Gregor 739ef0c183 C99 DR #316 implies that the function parameter types that are known
only from a function definition (that does not have a prototype) are
only used to determine the compatible with other declarations of that
same function. In particular, when referencing the function we pretend
as if it does not have a prototype. Implement this behavior, which
fixes PR3626.

llvm-svn: 65460
2009-02-25 16:33:18 +00:00