https://bugs.llvm.org/show_bug.cgi?id=40178
Bug ID: 40178
Summary: c11: Rejects well-formed program with alignment
specifier in typename of compound literal.
Product: clang
Version: trunk
Hardware: All
OS: All
Status: NEW
Severity: normal
Priority: P
Component: -New Bugs
Assignee: unassignedclangb...@nondot.org
Reporter: anders.granlun...@gmail.com
CC: htmldevelo...@gmail.com, llvm-bugs@lists.llvm.org,
neeil...@live.com, richard-l...@metafoo.co.uk
Test case (prog.c):
int main()
{
(_Alignas (int) int) { 0 };
}
Compilation command line:
clang prog.c -Wall -Wextra -std=c11 -pedantic-errors
Observed behaviour:
The following error message was outputed:
prog.c:3:6: error: expected expression
(_Alignas (int) int) { 0 };
^
1 error generated.
Expected behaviour:
No error messages outputed.
The program is well-formed. See 6.7.5/1:
"An alignment specifier shall appear only in the declaration specifiers of
a
declaration, or in the specifier-qualifier list of a member
declaration,
or in the type name of a compound literal. An alignment
specifier
shall not be used in conjunction with either of the storage-class
specifiers typedef or register, nor in a declaration of a function or
bit-field."
Note:
GCC accepts this program without any error messages outputed.
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