Commit Graph

8 Commits

Author SHA1 Message Date
Richard Smith 0511d23aeb PR22924, PR22845, some of CWG1464: When checking the initializer for an array
new expression, distinguish between the case of a constant and non-constant
initializer. In the former case, if the bound is erroneous (too many
initializer elements, bound is negative, or allocated size overflows), reject,
and take the bound into account when determining whether we need to
default-construct any elements. In the remanining cases, move the logic to
check for default-constructibility of trailing elements into the initialization
code rather than inventing a bogus array bound, to cope with cases where the
number of initialized elements is not the same as the number of initializer
list elements (this can happen due to string literal initialization or brace
elision).

This also fixes rejects-valid and crash-on-valid errors when initializing a
new'd array of character type from a braced string literal.

llvm-svn: 283406
2016-10-05 22:41:02 +00:00
Richard Smith 351241c83e Replace Sema-level implementation of -fassume-sane-operator-new with a
CodeGen-level implementation. Instead of adding an attribute to clang's
FunctionDecl, add the IR attribute directly. This means a module built with
this flag is now compatible with code built without it and vice versa.

This change also results in the 'noalias' attribute no longer being added to
calls to operator new in the IR; it's now only added to the declaration. It
also fixes a bug where we failed to add the attribute to the 'nothrow' versions
(because we didn't implicitly declare them, there was no good time to inject a
fake attribute).

llvm-svn: 265728
2016-04-07 21:46:12 +00:00
David Blaikie 218b783192 Update Clang tests to handle explicitly typed gep changes in LLVM.
llvm-svn: 230783
2015-02-27 19:18:17 +00:00
Aaron Ballman 455f42c9e8 Reverting r216675. This breaks some bots. Before this can be committed again, I have to explore runtime ABI requirements with libc++abi.
llvm-svn: 216677
2014-08-28 17:24:14 +00:00
Aaron Ballman 33375375a4 Throw a std::bad_array_new_length exception when the expression (or constant-expression) passed to operator new[] results in overflow in conformance with [expr.new]p7. Fixes PR11644.
llvm-svn: 216675
2014-08-28 16:48:44 +00:00
Richard Smith 06a67e2c6f When emitting a multidimensional array new, emit the initializers for the
trailing elements as a single loop, rather than sometimes emitting a nest of
several loops. This fixes a bug where CodeGen would sometimes try to emit an
expression with the wrong type for the element being initialized. Plus various
other minor cleanups to the IR produced for array new initialization.

llvm-svn: 210079
2014-06-03 06:58:52 +00:00
Stephen Lin 4362261b00 CHECK-LABEL-ify some code gen tests to improve diagnostic experience when tests fail.
llvm-svn: 188447
2013-08-15 06:47:53 +00:00
Sebastian Redl f862eb6a9f CodeGen for array new list initializers. Doesn't correctly clean up in the face of exceptions yet.
llvm-svn: 151171
2012-02-22 17:37:52 +00:00