app crash while scaling QImage

[know]

My app crashes. While QImage newImg = img.scaled(qSize, Qt::KeepAspectRatio, Qt::SmoothTransformation) I get:

# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffff6957c28, pid=6200, tid=0x0000000000000058
#
# JRE version: OpenJDK Runtime Environment (8.0_222-b10) (build 1.8.0_222-b10)
# Java VM: OpenJDK 64-Bit Server VM (25.222-b10 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C  [Qt5Guid.dll+0x77c28]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\eclipse-rcp-2020-06-R-win32-x86_64\eclipse\hs_err_pid6200.log
Compiled method (c1)   34920 4229       3       jogamp.opengl.gl4.GL4bcImpl::glGetIntegerv (125 bytes)
 total in heap  [0x000002542973a2d0,0x000002542973d450] = 12672
 relocation     [0x000002542973a3f0,0x000002542973a620] = 560
 main code      [0x000002542973a620,0x000002542973c0c0] = 6816
 stub code      [0x000002542973c0c0,0x000002542973c250] = 400
 oops           [0x000002542973c250,0x000002542973c278] = 40
 metadata       [0x000002542973c278,0x000002542973c308] = 144
 scopes data    [0x000002542973c308,0x000002542973cfb0] = 3240
 scopes pcs     [0x000002542973cfb0,0x000002542973d3d0] = 1056
 dependencies   [0x000002542973d3d0,0x000002542973d3f8] = 40
 nul chk table  [0x000002542973d3f8,0x000002542973d450] = 88

while QImage newImg = img.copy(0, 0, 100, 100) I get:

# A fatal error has been detected by the Java Runtime Environment:
#
#  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffe0ed61657, pid=20448, tid=0x0000000000002d60
#
# JRE version: OpenJDK Runtime Environment (8.0_222-b10) (build 1.8.0_222-b10)
# Java VM: OpenJDK 64-Bit Server VM (25.222-b10 mixed mode windows-amd64 compressed oops)
# Problematic frame:
# C  [VCRUNTIME140D.dll+0x1657]
#
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#
# An error report file with more information is saved as:
# C:\eclipse-rcp-2020-06-R-win32-x86_64\eclipse\hs_err_pid20448.log
Compiled method (c1)   28336 4193       3       jogamp.opengl.gl4.GL4bcImpl::glGetIntegerv (125 bytes)
 total in heap  [0x0000023cbc5138d0,0x0000023cbc516a50] = 12672
 relocation     [0x0000023cbc5139f0,0x0000023cbc513c20] = 560
 main code      [0x0000023cbc513c20,0x0000023cbc5156c0] = 6816
 stub code      [0x0000023cbc5156c0,0x0000023cbc515850] = 400
 oops           [0x0000023cbc515850,0x0000023cbc515878] = 40
 metadata       [0x0000023cbc515878,0x0000023cbc515908] = 144
 scopes data    [0x0000023cbc515908,0x0000023cbc5165b0] = 3240
 scopes pcs     [0x0000023cbc5165b0,0x0000023cbc5169d0] = 1056
 dependencies   [0x0000023cbc5169d0,0x0000023cbc5169f8] = 40
 nul chk table  [0x0000023cbc5169f8,0x0000023cbc516a50] = 88

More info here.

Any idea, what could be wrong, please?
I do use Qt 5.12.0, system info:

---------------  S Y S T E M  ---------------

OS: Windows 10.0 , 64 bit Build 19041 (10.0.19041.2546)

CPU:total 8 (initial active 8) (4 cores per cpu, 2 threads per core) family 6 model 94 stepping 3, cmov, cx8, fxsr, mmx, sse, sse2, sse3, ssse3, sse4.1, sse4.2, popcnt, avx, avx2, aes, clmul, erms, rtm, 3dnowpref, lzcnt, ht, tsc, tscinvbit, bmi1, bmi2, adx

Memory: 4k page, physical 16694920k(10934708k free), swap 23510664k(11805564k free)

vm_info: OpenJDK 64-Bit Server VM (25.222-b10) for windows-amd64 JRE (1.8.0_222-1-ojdkbuild-b10), built on Jul 18 2019 16:58:32 by "VssAdministrator" with MS VC++ 10.0 (VS2010)

[SGaist]

Hi and welcome to devnet,

Are you using a 32bit build of Qt ?
Are you tied to 5.12.0 ? Can you at least test with a more recent version ?

[know]

@SGaist Thanks for comment! I do use 64bit version. I tried 5.12.0 and 5.12.12. I can check if there is some newer version to use, because I use VS2015 to build and debug my app. There might be problem with memory, tiff file allocates 4.2GB. Windows photos or paint can not display it as well. Gimp can do it, it needs over 6GB of RAM. I never tried to open such big tiff before this one.

[SGaist]

What kind of Tiff file is that ?
Do you really need to load it fully in memory ?

[know]

@SGaist it is a technical drawing. It is saved as RGBA8888, therefore needs so much memory. I need as good quality of image as it get. Maybe I could create QImage::Format_Mono, but would be great to display any tiff anyway. But strange is that app crashes even when trying to display small piece: QImage newImg = img.copy(0, 0, 100, 100).
Some real data:

i_Width:81118
i_Height:13244
l_originRowBytes:324472
l_rowBytes:324472
l_originSize:2339872

QImage::Format_RGBA8888 
qSize:4297307168 // after memory allocation

[SGaist]

If only Gimp is able to load that file it likely uses something smart to load such a file. I currently don't think the Tiff image loader from Qt is that subtle.

[know]

@SGaist maybe I've found the problem: I use

void myImageObj::addData(unsigned char *i_pData, unsigned int i_bytesPerRow, unsigned int i_width, unsigned int i_height, float i_scaleX, float i_scaleY, unsigned short int i_spp, unsigned short int i_bps, int i_layertype, int i_PosX, int i_PosY)
{
  if(i_layertype == BACKGROUND)
    m_data = QVector<unsigned char>(i_bytesPerRow*i_height);
  else
    m_data = QVector<unsigned char>(i_bytesPerRow);
  m_bytesPerRow = i_bytesPerRow;
  m_width = i_width;
  m_height = i_height;
  m_scaleX = i_scaleX;
  m_scaleY = i_scaleY;
  m_spp = i_spp;
  m_bps = i_bps;
  m_layertype = (LAYERTYPE)i_layertype;
  m_PosX = i_PosX;
  m_PosY = i_PosY;
  int mds = m_data.size();
  std::copy(i_pData, i_pData + m_data.size(),
            stdext::checked_array_iterator<unsigned char*>(
              m_data.data(), m_data.size()));
}

and then m_data.size() = 2,339,872 although I allocated 4,297,307,168. I miss exactly 2^32. I probably need something else then QVector.

[SGaist]

Qt 5's QVector uses an int for its size so you have hit its limit.