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Fix crash with conversion to an address-space-qualified pointer. Bug 

reported on cfe-dev by Cédric Venet.

Note that I seriously doubt that this perticular construct is useful, 
though: it's a pointer in an alternate address space pointing into 
unqualified address space.

llvm-svn: 52076
This commit is contained in:
Eli Friedman 2008-06-07 17:27:51 +00:00
parent 7dbab8a6a1
commit 3ce7b20590
2 changed files with 6 additions and 2 deletions
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4
clang/lib/CodeGen/CGExprConstant.cpp
View File

@ -632,7 +632,7 @@ public:
// Handle pointer conversions next: pointers can only be converted to/from
// other pointers and integers.
if (isa<PointerType>(DstType)) {
if (isa<llvm::PointerType>(DstTy)) {
// The source value may be an integer, or a pointer.
if (isa<llvm::PointerType>(Src->getType()))
return llvm::ConstantExpr::getBitCast(Src, DstTy);
@ -640,7 +640,7 @@ public:
return llvm::ConstantExpr::getIntToPtr(Src, DstTy);
}
if (isa<PointerType>(SrcType)) {
if (isa<llvm::PointerType>(Src->getType())) {
// Must be an ptr to int cast.
assert(isa<llvm::IntegerType>(DstTy) && "not ptr->int?");
return llvm::ConstantExpr::getPtrToInt(Src, DstTy);

4
clang/test/CodeGen/address-space-cast.c Normal file
View File

@ -0,0 +1,4 @@
// RUN: clang -emit-llvm < %s
volatile unsigned char* const __attribute__((address_space(1))) serial_ctrl = 0x02;