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Fix UBsan overflow finding

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We were cating UBsan findings under Clang similar to "adv-simd.h:1138:26: runtime error: addition of unsigned offset to 0x000002d41410 overflowed to 0x000002d41400". The problem was CRYPTOPP_CONSTANT, which used an enum. The compiler is allowed to pick the underlying data type, and Clang was picking a signed type
This commit is contained in:
Jeffrey Walton 2017-12-16 14:21:08 -05:00
parent c3a85caf52
commit dc21de2483
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GPG Key ID: B36AB348921B1838
1 changed files with 12 additions and 12 deletions
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24
adv-simd.h
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@ -88,8 +88,8 @@ inline size_t AdvancedProcessBlocks64_NEON2x6(F2 func2, F6 func6,
CRYPTOPP_ASSERT(outBlocks);
CRYPTOPP_ASSERT(length >= 8);
CRYPTOPP_CONSTANT(blockSize = 8)
CRYPTOPP_CONSTANT(neonBlockSize = 16)
const size_t blockSize = 8;
const size_t neonBlockSize = 16;
size_t inIncrement = (flags & (BT_InBlockIsCounter|BT_DontIncrementInOutPointers)) ? 0 : neonBlockSize;
size_t xorIncrement = xorBlocks ? neonBlockSize : 0;
@ -316,8 +316,8 @@ size_t AdvancedProcessBlocks128_NEON1x6(F1 func1, F6 func6,
CRYPTOPP_ASSERT(outBlocks);
CRYPTOPP_ASSERT(length >= 16);
CRYPTOPP_CONSTANT(blockSize = 16)
// CRYPTOPP_CONSTANT(neonBlockSize = 16)
const size_t blockSize = 16;
// const size_t neonBlockSize = 16;
size_t inIncrement = (flags & (BT_InBlockIsCounter|BT_DontIncrementInOutPointers)) ? 0 : blockSize;
size_t xorIncrement = xorBlocks ? blockSize : 0;
@ -455,8 +455,8 @@ size_t AdvancedProcessBlocks128_NEON2x6(F2 func2, F6 func6,
CRYPTOPP_ASSERT(outBlocks);
CRYPTOPP_ASSERT(length >= 16);
CRYPTOPP_CONSTANT(blockSize = 16)
// CRYPTOPP_CONSTANT(neonBlockSize = 16)
const size_t blockSize = 16;
// const size_t neonBlockSize = 16;
size_t inIncrement = (flags & (BT_InBlockIsCounter|BT_DontIncrementInOutPointers)) ? 0 : blockSize;
size_t xorIncrement = xorBlocks ? blockSize : 0;
@ -682,8 +682,8 @@ inline size_t AdvancedProcessBlocks64_SSE2x6(F2 func2, F6 func6,
CRYPTOPP_ASSERT(outBlocks);
CRYPTOPP_ASSERT(length >= 8);
CRYPTOPP_CONSTANT(blockSize = 8)
CRYPTOPP_CONSTANT(xmmBlockSize = 16)
const size_t blockSize = 8;
const size_t xmmBlockSize = 16;
size_t inIncrement = (flags & (BT_InBlockIsCounter|BT_DontIncrementInOutPointers)) ? 0 : xmmBlockSize;
size_t xorIncrement = xorBlocks ? xmmBlockSize : 0;
@ -916,8 +916,8 @@ inline size_t AdvancedProcessBlocks128_SSE2x6(F2 func2, F6 func6,
CRYPTOPP_ASSERT(outBlocks);
CRYPTOPP_ASSERT(length >= 16);
CRYPTOPP_CONSTANT(blockSize = 16)
// CRYPTOPP_CONSTANT(xmmBlockSize = 16)
const size_t blockSize = 16;
// const size_t xmmBlockSize = 16;
size_t inIncrement = (flags & (BT_InBlockIsCounter|BT_DontIncrementInOutPointers)) ? 0 : blockSize;
size_t xorIncrement = xorBlocks ? blockSize : 0;
@ -1101,8 +1101,8 @@ inline size_t AdvancedProcessBlocks128_SSE1x4(F1 func1, F4 func4,
CRYPTOPP_ASSERT(outBlocks);
CRYPTOPP_ASSERT(length >= 16);
CRYPTOPP_CONSTANT(blockSize = 16)
// CRYPTOPP_CONSTANT(xmmBlockSize = 16)
const size_t blockSize = 16;
// const size_t xmmBlockSize = 16;
size_t inIncrement = (flags & (BT_InBlockIsCounter|BT_DontIncrementInOutPointers)) ? 0 : blockSize;
size_t xorIncrement = xorBlocks ? blockSize : 0;