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authorStephan Bergmann <sbergman@redhat.com>2021-05-21 13:38:32 +0200
committerStephan Bergmann <sbergman@redhat.com>2021-05-21 14:50:14 +0200
commit12362fc496102b344dedef0a6ba130ba80b94149 (patch)
treeaace8721065fa3202a7d5cfac069e1e75e72e41a /sdext
parent95a716f12a0dacdd5d80a6f3d98eadcc2f079fcf (diff)
LineParser::readNextToken gets called with m_nCharIndex==npos after all
eca89ece45ede76605a6102c94b3b67e1f8ff5aa "Replace rtl_string_getTokenView with o3tl::getToken" had erroneously assumed (from a succeeding `make check`) that the only problematic call to o3tl::getToken with position==npos would be the one in LineParser::readPath (and which had been addressed in that commit). But e.g. loading ooo29794-4.pdf from the crash test corpus would also run into that situation via LineParser::readNextToken, > warn:legacy.osl:3090875:3090875:sdext/source/pdfimport/wrapper/wrapper.cxx:259: insufficient input > soffice.bin: include/o3tl/string_view.hxx:34: std::string_view o3tl::getToken(std::string_view, char, std::size_t &): Assertion `position <= sv.size()' failed. > #3 0x00007ffff7a67a16 in __GI___assert_fail (assertion=0x7fffb39ea58c "position <= sv.size()", file=0x7fffb39f2a7f "include/o3tl/string_view.hxx", line=34, function=0x7fffb39ef3a9 "std::string_view o3tl::getToken(std::string_view, char, std::size_t &)") > #4 0x00007fffb3b60131 in o3tl::getToken(std::basic_string_view<char, std::char_traits<char> >, char, unsigned long&) (sv="eoClipPath", delimiter=32 ' ', position=@0x7fffffff29e0: 18446744073709551615) at include/o3tl/string_view.hxx:34 > #5 0x00007fffb3b5aa9f in pdfi::(anonymous namespace)::LineParser::readNextToken() (this=0x7fffffff29d0) at sdext/source/pdfimport/wrapper/wrapper.cxx:260 > #6 0x00007fffb3b5b2fa in pdfi::(anonymous namespace)::LineParser::readPath() (this=0x7fffffff29d0) at sdext/source/pdfimport/wrapper/wrapper.cxx:323 > #7 0x00007fffb3b59eb3 in pdfi::(anonymous namespace)::Parser::parseLine(rtl::OString const&) (this=0x7fffffff2d28, rLine="eoClipPath") at sdext/source/pdfimport/wrapper/wrapper.cxx:859 [...] so better guard there. Change-Id: Ibfd53fd9d3be0a3548d60cb26d59bb5966c5bc2c Reviewed-on: https://gerrit.libreoffice.org/c/core/+/115916 Tested-by: Jenkins Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Diffstat (limited to 'sdext')
-rw-r--r--sdext/source/pdfimport/wrapper/wrapper.cxx5
1 files changed, 4 insertions, 1 deletions
diff --git a/sdext/source/pdfimport/wrapper/wrapper.cxx b/sdext/source/pdfimport/wrapper/wrapper.cxx
index 78fb9cd0b331..2221f1ebe33f 100644
--- a/sdext/source/pdfimport/wrapper/wrapper.cxx
+++ b/sdext/source/pdfimport/wrapper/wrapper.cxx
@@ -256,7 +256,10 @@ OString lcl_unescapeLineFeeds(std::string_view i_rStr)
std::string_view LineParser::readNextToken()
{
- OSL_PRECOND(m_nCharIndex!=std::string_view::npos,"insufficient input");
+ if (m_nCharIndex == std::string_view::npos) {
+ SAL_WARN("sdext.pdfimport", "insufficient input");
+ return {};
+ }
return o3tl::getToken(m_aLine,' ',m_nCharIndex);
}