Commit Graph

9 Commits

Author SHA1 Message Date
Aaron Ballman 54fe5eb8cb Relaxing the alignment requirements for fields in a transparent_union. Emits the diagnostic only when subsequent alignments are more strict than the alignment required by the first field.
Fixes PR15134

llvm-svn: 200277
2014-01-28 01:47:34 +00:00
Alp Toker 11a71128b7 Forbid driver use in Sema tests
This ports the last Sema tests over to use the frontend directly, and adds a
local lit substitution to disable inappropriate %clang usage under this
directory.

llvm-svn: 199348
2014-01-16 02:37:08 +00:00
Peter Collingbourne 19b961d5f9 Merge transparent union types using member's unqualified type
llvm-svn: 120736
2010-12-02 21:00:06 +00:00
Peter Collingbourne 102ad54099 Merge transparent union types using member's canonical param type
llvm-svn: 120729
2010-12-02 20:02:29 +00:00
Peter Collingbourne a99fdcf93e Implement GNU C extension: two types are compatible if they appear
as a function argument, one of the types is a transparent union type
and the other type is compatible with a union member

llvm-svn: 117243
2010-10-24 18:30:18 +00:00
Douglas Gregor 2187266120 Complain about the application of a transparent_union attribute to a
union whose first field has integral vector type. Also, clean up this
diagnostic a bit. Thanks to Eli for spotting this change in semantics
last week.

llvm-svn: 107296
2010-06-30 17:24:13 +00:00
Douglas Gregor 4f4946aaaa Whenever we complain about a failed initialization of a function or
method parameter, provide a note pointing at the parameter itself so
the user does not have to manually look for the function/method being
called and match up parameters to arguments. For example, we now get:

t.c:4:5: warning: incompatible pointer types passing 'long *' to
parameter of
      type 'int *' [-pedantic]
  f(long_ptr);
    ^~~~~~~~
t.c:1:13: note: passing argument to parameter 'x' here
void f(int *x);
            ^

llvm-svn: 102038
2010-04-22 00:20:18 +00:00
Daniel Dunbar 5618e98f33 Update tests to use %clang instead of 'clang', and forcibly disable use of '
clang ' or ' clang -cc1 ' or ' clang-cc ' in test lines (by substituting them to
garbage).

llvm-svn: 91460
2009-12-15 22:01:24 +00:00
Douglas Gregor 0cfbdab0cf Implement semantic analysis for transparent unions. This is largely
based on a patch from Anders Johnsen. CodeGen support is incomplete,
in that we do not properly coerce to the first field's type.

llvm-svn: 70419
2009-04-29 22:16:16 +00:00