[okular] [Bug 462312] Okular crash on editing form

[Riccardo Escher]

https://bugs.kde.org/show_bug.cgi?id=462312

--- Comment #4 from Riccardo Escher <riccardoescher at gmx.de> ---
Created attachment 159092
  --> https://bugs.kde.org/attachment.cgi?id=159092&action=edit
New crash information added by DrKonqi

okular (23.04.0) using Qt 5.15.9

Same for me. A PDF Form already edited. Reopen it to add values into an empty
form field: it crashes at the first character

-- Backtrace (Reduced):
#4  GfxResources::doLookupFont(char const*) const (this=<optimized out>,
name=0x7ffff78e4750 "Helvetica") at
/usr/src/debug/poppler-23.04.0/poppler/Gfx.cc:301
#5  0x00007f94093489ad in GfxResources::lookupFont(char const*)
(this=<optimized out>, name=<optimized out>) at
/usr/src/debug/poppler-23.04.0/poppler/Gfx.cc:313
#6  0x00007f9409342235 in Form::ensureFontsForAllCharacters(GooString const*,
std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >
const&, GfxResources*) (this=0x556bf2528460, unicodeText=0x556bf268e950,
pdfFontNameToEmulate=<optimized out>, fieldResources=<optimized out>) at
/usr/src/debug/poppler-23.04.0/poppler/Form.cc:2972
#7  0x00007f940933a056 in FormFieldText::setContentCopy(GooString const*)
(this=0x556bf2508fa0, new_content=new_content at entry=0x556bf26598f0) at
/usr/src/debug/poppler-23.04.0/poppler/Form.cc:1690
#8  0x00007f940933a2d5 in FormWidgetText::setContent(GooString const*)
(this=this at entry=0x556bf2508ef0, new_content=new_content at entry=0x556bf26598f0)
at /usr/src/debug/poppler-23.04.0/poppler/Form.cc:427

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