Stream length should be an integer

[ekmartin]

Trying to parse this file crashes with a Stream Length should be an integer error. It seems to be caused by the figure included using the LaTeX svg package.

Here's the full stack trace:

thread 'main' panicked at 'Stream Length should be an integer.', libcore/option.rs:914:5
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::print
             at libstd/sys_common/backtrace.rs:71
             at libstd/sys_common/backtrace.rs:59
   2: std::panicking::default_hook::{{closure}}
             at libstd/panicking.rs:205
   3: std::panicking::default_hook
             at libstd/panicking.rs:221
   4: <std::panicking::begin_panic::PanicPayload<A> as core::panic::BoxMeUp>::get
             at libstd/panicking.rs:457
   5: std::panicking::try::do_call
             at libstd/panicking.rs:344
   6: std::panicking::try::do_call
             at libstd/panicking.rs:322
   7: <&'a T as core::fmt::Display>::fmt
             at libcore/panicking.rs:71
   8: core::ptr::drop_in_place
             at libcore/option.rs:914
   9: alloc::raw_vec::alloc_guard
             at /Users/travis/build/rust-lang/rust/src/libcore/option.rs:302
  10: lopdf::parser::stream::{{closure}}
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/lopdf-0.15.1/src/parser.rs:114
  11: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:501
  12: lopdf::encodings::bytes_to_string::{{closure}}
             at /Users/travis/build/rust-lang/rust/src/libcore/result.rs:621
  13: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:501
  14: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  15: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:34
  16: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  17: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:520
  18: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  19: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:516
  20: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  21: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:469
  22: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  23: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:453
  24: lopdf::encodings::bytes_to_string::{{closure}}
             at /Users/travis/build/rust-lang/rust/src/libcore/result.rs:621
  25: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:453
  26: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  27: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:469
  28: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  29: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:469
  30: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  31: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:469
  32: <pdf_word_count::WordCount as core::default::Default>::default
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/pom-1.1.0/src/parser.rs:23
  33: lopdf::reader::Reader::read_object
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/lopdf-0.15.1/src/reader.rs:139
  34: <std::collections::hash::map::RandomState as core::hash::BuildHasher>::build_hasher
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/lopdf-0.15.1/src/reader.rs:91
  35: lopdf::reader::<impl lopdf::document::Document>::load_internal
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/lopdf-0.15.1/src/reader.rs:38
  36: lopdf::reader::<impl lopdf::document::Document>::load_from
             at /Users/ek/.cargo/registry/src/github.com-1ecc6299db9ec823/lopdf-0.15.1/src/reader.rs:26
  37: pdf_word_count::Collector::process_document
             at ./src/lib.rs:27
  38: pdf_wc::main
             at src/main.rs:23
  39: std::rt::lang_start::{{closure}}
             at /Users/travis/build/rust-lang/rust/src/libstd/rt.rs:74
  40: std::panicking::try::do_call
             at libstd/rt.rs:59
             at libstd/panicking.rs:304
  41: panic_unwind::dwarf::eh::read_encoded_pointer
             at libpanic_unwind/lib.rs:105
  42: std::sys_common::cleanup
             at libstd/panicking.rs:283
             at libstd/panic.rs:361
             at libstd/rt.rs:58
  43: std::rt::lang_start
             at /Users/travis/build/rust-lang/rust/src/libstd/rt.rs:74
  44: pdf_wc::main

[J-F-Liu]

The Length value is /Length 58 0 R, but 58 0 obj in object streams, its value is not readable in this parsing stage.

[J-F-Liu]

Fixed in 0.18.0