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Re: build 261 - an old bug returns

#1 build 261 - an old bug returns

Posted by: Gorlash | Date: 02/21/2018 22:04 | IP: IP Logged

Well, the good news is that I've run 5 hours with this build, and haven't gotten a crash; that's pretty good!!

Unfortunately, I'm getting the old "injecting garbage at random locations" bug, which had seemed to be fixed in the past. At line 1969 of a 2248 line file .c file, I got 269 characters of garbage... following is a hex-dump of the four lines that were involved.

Notes:
1. the affected line originally contained only a { character
2. I have not edited anywhere near this line in weeks; this garbage was inserted at a random location in the file!!

00000: 20 20 20 20 75 69 6E 74 38 20 69 20 3D 20 30 55 | uint8 i = 0U |
00010: 3B 0A 20 20 20 20 66 6F 72 28 20 69 3D 31 3B 20 | ;. for( i=1; |
00020: 69 3C 6D 5F 68 65 61 64 65 72 4C 65 6E 67 74 68 | i<m_headerLength |
00030: 3B 20 69 2B 2B 20 29 0A 20 20 3F 3F 7B 00 69 6E | ; i++ ). ??{.in |
00040: 3F 3F 3F 02 01 00 05 00 20 20 20 20 7D 00 00 00 | ???..... }... |
00050: 3F 3F 3F 02 01 00 05 00 20 20 20 20 7B 00 00 00 | ???..... {... |
00060: 81 3F 3F 6D 00 00 67 00 21 01 00 00 6D 00 00 00 | ???m..g.!...m... |
00070: 3F 3F 3F 02 01 00 05 00 20 20 20 20 7B 00 20 2A | ???..... {. * |
00080: 3F 3F 3F 02 01 00 05 00 20 20 20 20 7D 00 6F 64 | ???..... }.od |
00090: 3F 3F 01 00 04 00 3F 3F 00 00 00 00 00 00 00 00 | ??....??........ |
000A0: 3F 3F 3F 42 01 00 01 00 3F 00 00 00 00 00 00 00 | ???B....?....... |
000B0: 3F 3F 3F 6D 00 00 3F 00 59 04 00 00 3F 00 00 00 | ???m..?.Y...?... |
000C0: 3F 3F 3F 6D 00 00 3F 00 2E 04 00 00 3F 00 00 00 | ???m..?.....?... |
000D0: 3F 3F 3F 6D 00 00 3F 00 4E 04 00 00 3F 00 00 00 | ???m..?.N...?... |
000E0: 3F 3F 3F 6D 00 00 3F 00 4D 04 00 00 3F 00 00 00 | ???m..?.M...?... |
000F0: 3F 3F 3F 6D 00 00 3F 00 55 05 00 00 3F 00 00 00 | ???m..?.U...?... |
00100: 3F 3F 3F 6D 00 00 3F 00 49 05 00 00 3F 00 00 00 | ???m..?.I...?... |
00110: 3F 3F 3F 6D 00 00 3F 00 58 04 00 00 3F 00 00 00 | ???m..?.X...?... |
00120: 3F 3F 3F 6D 00 00 3F 00 56 04 00 00 3F 00 00 00 | ???m..?.V...?... |
00130: 3F 3F 3F 6D 00 00 3F 0A 20 20 20 20 20 20 20 20 | ???m..?. |
00140: 2F 2F 63 73 75 6D 0A 20 20 20 20 20 20 20 20 73 | //csum. s |
00150: 75 6D 20 2B 3D 20 2A 28 73 74 61 72 74 2B 69 29 | um += *(start+i) |
00160: 3B 0A 20 20 20 20 7D 0A | ;. }. |

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#2 Re: build 261 - an old bug returns

Posted by: Andreas | Date: 03/23/2018 22:09 | IP: IP Logged

I also have garbage in files (not hex) from time to time at random locations. Srange characters.

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#3 Re: build 261 - an old bug returns

Posted by: hansb | Date: 04/04/2018 06:28 | IP: IP Logged

I'm experiencing something similar with build 4.6.2 (2750).
I'm not sure when occurs but on a large file (~2MB, encoding UTF-16LE) I had sometimes the insertion of the character 0xFF00 at a random position, sometimes followed by garbage or a sudden truncation.
I know that this kind of bugs (typically caused by unchecked access to memory buffers) may be quite difficult to spot, unfortunately I don't have any more information to give.
Sadly this is an issue that endangers my work, so I am now searching for alternatives.

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