http://llvm.org/bugs/show_bug.cgi?id=3003
Summary: clang: does not treat expression involving struct
pointer as a constant in array declaration
Product: clang
Version: unspecified
Platform: All
OS/Version: All
Status: NEW
Severity: normal
Priority: P2
Component: Semantic Analyzer
AssignedTo: [EMAIL PROTECTED]
ReportedBy: [EMAIL PROTECTED]
CC: [email protected]
Blocks: 2778
This is a reduced version of another parser reject from DragonFly BSD's kernel
source (see bug 2778).
(If you think this is ugly, you should see the original code in all of its
expanded macro glory...)
struct str1 { char c; };
struct str2 {
int intarray[ (int)&((struct str1 *)0)->c + 1];
};
% gcc-4.2 -W -Wall -pedantic -fsyntax-only -std=c99 array-length.c
% clang -fsyntax-only -std=c99 array-length.c
array-length.c:4:7: error: arrays with static storage duration must have
constant integer length
int intarray[ (int)&((struct str1 *)0)->c + 1];
^~~~~~~~
1 diagnostic generated.
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