[llvmg++] Internal compiler error using reference tricks

[mrvacbob]

Bugzilla Link	523
Resolution	FIXED
Resolved on	Feb 22, 2010 12:42
Version	trunk
OS	All

Extended Description

Compiling the file in the URL with the online demo (with all options checked) yields:
Output from llvm C/C++ front-end (llvm-gcc)

cc1plus: ../../llvm-gcc/gcc/llvm-expand.c:5937: llvm_expand_expr: Assertion (DestLoc == 0 || isDestTyComposite) && "Cannot specify DestLoc for non-composite types!"' failed. /tmp/webcompile/_3875_0.cc: In function void unvectoredsum(unsigned char*, const unsigned char*,
const unsigned char*, int, int, int)':
/tmp/webcompile/_3875_0.cc:13: internal compiler error: Aborted
Please submit a full bug report,
with preprocessed source if appropriate.
See URL:http://llvm.cs.uiuc.edu for instructions.

[mrvacbob]

assigned to @lattner

[lattner]

mine

[lattner]

Here's a reduced testcase:

void test(unsigned char *b, int rb) {
typedef unsigned char imgfoo[10][rb];
imgfoo &br = *(imgfoo *)b;

br[0][0] = 1;

rb = br[0][0];
}

[lattner]

Fixed. Patch here:
http://mail.cs.uiuc.edu/pipermail/llvm-commits/Week-of-Mon-20050214/024201.html

Testcase here:
test/Regression/C++Frontend/2005-02-20-BrokenReferenceTest.cpp

This was a regression I introduced in my change earlier today.

Thanks for the bug report!

-Chris