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| author | Chris Lattner <sabre@nondot.org> | 2004-01-20 19:13:07 +0000 |
|---|---|---|
| committer | Chris Lattner <sabre@nondot.org> | 2004-01-20 19:13:07 +0000 |
| commit | 467d9778686bfaf501e1cdd1401e956f91e2d34f (patch) | |
| tree | 495cfbe2b1839a438d559b6668109eaaad51dc1b /llvm/lib/Bytecode | |
| parent | 32afecc336ab1ba886bb44e9c65cdfdefe586d7e (diff) | |
| download | bcm5719-llvm-467d9778686bfaf501e1cdd1401e956f91e2d34f.tar.gz bcm5719-llvm-467d9778686bfaf501e1cdd1401e956f91e2d34f.zip | |
Fix PR212 - Bytecode reader misreads 'long -9223372036854775808'!
Fix testcase test/Regression/Assembler/2004-01-20-MaxLongLong.llx
llvm-svn: 10928
Diffstat (limited to 'llvm/lib/Bytecode')
| -rw-r--r-- | llvm/lib/Bytecode/Reader/ReaderPrimitives.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/llvm/lib/Bytecode/Reader/ReaderPrimitives.h b/llvm/lib/Bytecode/Reader/ReaderPrimitives.h index 0366ee3a792..496ab2a5b13 100644 --- a/llvm/lib/Bytecode/Reader/ReaderPrimitives.h +++ b/llvm/lib/Bytecode/Reader/ReaderPrimitives.h @@ -59,9 +59,13 @@ namespace llvm { static inline int64_t read_vbr_int64(const unsigned char *&Buf, const unsigned char *EndBuf) { uint64_t R = read_vbr_uint64(Buf, EndBuf); - if (R & 1) - return -(int64_t)(R >> 1); - else + if (R & 1) { + if (R != 1) + return -(int64_t)(R >> 1); + else // There is no such thing as -0 with integers. "-0" really means + // 0x8000000000000000. + return 1LL << 63; + } else return (int64_t)(R >> 1); } |
