| Fix elf_cvt_gunhash if dest and src are same. |
| |
| Upstream-Status: Pending |
| |
| The 'dest' and 'src' can be same, we need to save the value of src32[2] |
| before swaping it. |
| |
| Signed-off-by: Baoshan Pang <BaoShan.Pang@windriver.com> |
| diff --git a/libelf/gnuhash_xlate.h b/libelf/gnuhash_xlate.h |
| index 6faf113..04d9ca1 100644 |
| --- a/libelf/gnuhash_xlate.h |
| +++ b/libelf/gnuhash_xlate.h |
| @@ -40,6 +40,7 @@ elf_cvt_gnuhash (void *dest, const void *src, size_t len, int encode) |
| words. We must detangle them here. */ |
| Elf32_Word *dest32 = dest; |
| const Elf32_Word *src32 = src; |
| + Elf32_Word save_src32_2 = src32[2]; // dest could be equal to src |
| |
| /* First four control words, 32 bits. */ |
| for (unsigned int cnt = 0; cnt < 4; ++cnt) |
| @@ -50,7 +51,7 @@ elf_cvt_gnuhash (void *dest, const void *src, size_t len, int encode) |
| len -= 4; |
| } |
| |
| - Elf32_Word bitmask_words = encode ? src32[2] : dest32[2]; |
| + Elf32_Word bitmask_words = encode ? save_src32_2 : dest32[2]; |
| |
| /* Now the 64 bit words. */ |
| Elf64_Xword *dest64 = (Elf64_Xword *) &dest32[4]; |