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Silence static analyzer warnings in LLVMSupport.

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The static analyzer catches a few potential bugs in LLVMSupport. Add
in asserts to silence the warnings.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@224044 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Michael Ilseman 2014-12-11 19:46:38 +00:00
parent e9256e340b
commit 2b7ed472a7
2 changed files with 4 additions and 0 deletions
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2
lib/Support/CommandLine.cpp
View File

@ -323,6 +323,7 @@ static inline bool ProvideOption(Option *Handler, StringRef ArgName,
if (i+1 >= argc)
return Handler->error("requires a value!");
// Steal the next argument, like for '-o filename'
assert(argv && "null check");
Value = argv[++i];
}
break;
@ -356,6 +357,7 @@ static inline bool ProvideOption(Option *Handler, StringRef ArgName,
while (NumAdditionalVals > 0) {
if (i+1 >= argc)
return Handler->error("not enough values!");
assert(argv && "null check");
Value = argv[++i];
if (CommaSeparateAndAddOccurrence(Handler, i, ArgName, Value, MultiArg))

2
lib/Support/ScaledNumber.cpp
View File

@ -169,6 +169,8 @@ static std::string toStringAPFloat(uint64_t D, int E, unsigned Precision) {
int Shift = 63 - (NewE - E);
assert(Shift <= LeadingZeros);
assert(Shift == LeadingZeros || NewE == ScaledNumbers::MaxScale);
assert((Shift & (1u << std::numeric_limits<int>::digits)) == 0 &&
"undefined behavior");
D <<= Shift;
E = NewE;