http://llvm.org/bugs/show_bug.cgi?id=20008
Bug ID: 20008
Summary: clang-cl doesn't support the ui32 type suffix properly
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: normal
Priority: P
Component: C++
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected], [email protected]
Classification: Unclassified
The headers that ship with MSVC define UINT32_MAX as 0xffffffffui32. I'm not
100% sure what "ui32" is but I assume it denotes a uint32_t type. It seems
like this confuses clang-cl a bit, which makes it a pain in places where for
example we call std::min with a uint32_t argument and a UINT32_MAX-1 argument.
Here is a minimal test case demonstrating the issue:
#include <stdint.h>
template<class T> T min(T, T);
#define MAX 0xffffffffui32
void test() {
uint32_t a;
min(a, MAX - 1);
}
$ ./bin/clang-cl -c test.cpp
test.cpp(6,3) : error: no matching function for call to 'min'
min(a, MAX - 1);
^~~
test.cpp(2,21) : note: candidate template ignored: deduced conflicting types
for parameter 'T' ('unsigned int' vs. 'unsigned long')
template<class T> T min(T, T);
^
1 error generated.
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