https://bugs.llvm.org/show_bug.cgi?id=33537
Bug ID: 33537
Summary: Illegitimate implicitly-unsigned-literal warning for
LLONG_MIN value.
Product: clang
Version: trunk
Hardware: PC
OS: All
Status: NEW
Severity: enhancement
Priority: P
Component: Frontend
Assignee: unassignedclangb...@nondot.org
Reporter: babo...@gmail.com
CC: llvm-bugs@lists.llvm.org
clang trunk, x86_64.
Using long long literal with LLONG_MIN value causes illegitimate warning. Note
using LLONG_MIN macro is ok, as it's defined as (-9223372036854775807LL -1)
> cat f.cpp
#include <climits>
// these guys are ok.
int min_int1 = -2147483648;
int min_int2 = INT_MIN;
// min_ll1 causes troubles, while min_ll2 is ok, because it's defined as
(-9223372036854775807LL -1)
long long int min_ll1 = -9223372036854775808LL; // 0x8000000000000000LL
long long int min_ll2 = LLONG_MIN;
> clang++ f.cpp -c
f.cpp:6:26: warning: integer literal is too large to be represented in a signed
integer type, interpreting as unsigned [-Wimplicitly-unsigned-literal]
long long int min_ll1 = -9223372036854775808LL; // 0x8000000000000000LL
^
1 warning generated.
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