The problem occurred In the latest version libpano13-2.9.20, with the tool PTtiffdump i tryed.
``` ./bin/PTtiffdump libpano_segv_01 1 PTuncrop Version 2.9.20 , by Daniel M German OJPEGSetupDecode: Warning, Deprecated and troublesome old-style JPEG compression mode, please convert to new-style JPEG compression and notify vendor of writing software. [1] 780461 segmentation fault ./bin/PTtiffdump libpano_segv_01 ``` I tried to debug it here is the backtrace ── source:tif_color.c+191 ──── // ycbcr=0x00007fffffffc9e8 → [...] → 0xff000000ff000000 → 191 i = ycbcr->Y_tab[Y] + ycbcr->Cr_r_tab[Cr]; 192 *r = CLAMP(i, 0, 255); 193 i = ycbcr->Y_tab[Y] 194 + (int)((ycbcr->Cb_g_tab[Cb] + ycbcr->Cr_g_tab[Cr]) >> SHIFT); 195 *g = CLAMP(i, 0, 255); 196 i = ycbcr->Y_tab[Y] + ycbcr->Cb_b_tab[Cb]; ──── threads ──── [#0] Id 1, Name: "PTtiffdump", stopped 0x7ffff7bdc4a3 in TIFFYCbCrtoRGB (), reason: SIGSEGV ────── trace ──── [#0] 0x7ffff7bdc4a3 → TIFFYCbCrtoRGB(ycbcr=0x555555568590, Y=0x4, Cb=0x0, Cr=0xff, r=0x7fffffffca50, g=0x7fffffffca54, b=0x7fffffffca58) [#1] 0x7ffff7c11b85 → putcontig8bitYCbCr22tile(img=0x7fffffffcbf0, cp=0x555555568818, x=0x9a, y=0x9f, w=0xa0, h=0x52, fromskew=0x0, toskew=0xfffffec0, pp=0x5555555748c2 "") [#2] 0x7ffff7c0b0e5 → gtStripContig(img=0x7fffffffcbf0, raster=0x55555555bd80, w=0xa0, h=0xa0) [#3] 0x7ffff7c09a47 → TIFFRGBAImageGet(img=0x7fffffffcbf0, raster=0x55555555bd80, w=0xa0, h=0xa0) [#4] 0x7ffff7c09b58 → TIFFReadRGBAImageOriented(tif=0x555555559740, rwidth=0xa0, rheight=0xa0, raster=0x55555555bd80, orientation=0x4, stop=0x1) [#5] 0x7ffff7c09c13 → TIFFReadRGBAImage(tif=0x555555559740, rwidth=0xa0, rheight=0xa0, raster=0x55555555bd80, stop=0x1) [#6] 0x7ffff7fa2b9f → panoTiffReadData(im=0x7fffffffd1c0, tif=0x5555555596b0) [#7] 0x7ffff7fa3296 → panoTiffRead(im=0x7fffffffd1c0, fileName=0x7fffffffe793 "./libpano_segv_01") [#8] 0x55555555542a → main(argc=0x4, argv=0x7fffffffe528) ──────────── gef➤ p ycbcr->Y_tab[Y] $3 = 0xff9c4200 gef➤ p ycbcr->Cr_r_tab[Cr] Cannot access memory at address 0x5555ff0003fc In function panoTiffReadData() in tiff.c at line 1328, it call the tiff function TIFFReadRGBAImage and the error happened. ``` if (TIFFReadRGBAImage(tif->tiff, (uint32) panoTiffImageWidth(tif), (uint32) panoTiffImageHeight(tif), (uint32 *) * (im->data), 1)) { ``` Seems the error is in libtiff, but I wrote a wrapper of TIFFReadRGBAImage and it works fine without error . Now I didn't know what's the root cause . PTtiff2psd als crash for the call of TIFFReadRGBAImage. env: ubuntu20.04 x86_64 gcc 9.3.0 libtiff : 4.1.0 and 4.3.0 tested poc file: https://drive.google.com/file/d/1bDIs22u2UwlpZ8I1X4X0TlDDOa_9c5GE/view?usp=sharing -- A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ --- You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to hugin-ptx+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/hugin-ptx/2b2a2d19-0fe0-48ae-ae61-6ed7f5d1cc41n%40googlegroups.com.