Git versions of glib, goffice, gnumeric, libgsf and libxml2.

Test case: http://jutaky.com/fuzzing/gnumeric_case_009-ms-chart.c.2830.xls

$ ssconvert gnumeric_case_009-ms-chart.c.2830.xls /tmp/out.gnumeric

==5526==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000018 (pc 0x7f1d20ef50d7 bp 0x7ffd2b439490 sp 0x7ffd2b4373a0 T0)
    #0 0x7f1d20ef50d6 in xl_chart_read_end gnumeric/gnumeric/plugins/excel/ms-chart.c:2830:22
    #1 0x7f1d20e85ea3 in ms_excel_chart_read gnumeric/gnumeric/plugins/excel/ms-chart.c:3816:14
    #2 0x7f1d20cbf161 in excel_read_BOF gnumeric/gnumeric/plugins/excel/ms-excel-read.c:7116:4
    #3 0x7f1d20cb9fd5 in excel_read_workbook gnumeric/gnumeric/plugins/excel/ms-excel-read.c:7219:4
    #4 0x7f1d20c4d241 in excel_enc_file_open gnumeric/gnumeric/plugins/excel/boot.c:170:4
    #5 0x7f1d20c4ec94 in excel_file_open gnumeric/gnumeric/plugins/excel/boot.c:273:2
    #6 0x7f1d458a5f20 in go_plugin_loader_module_func_file_open gnumeric/goffice/goffice/app/go-plugin-loader-module.c:282:3
    #7 0x7f1d458b9aa4 in go_plugin_file_opener_open gnumeric/goffice/goffice/app/go-plugin-service.c:685:2
    #8 0x7f1d458c72b8 in go_file_opener_open gnumeric/goffice/goffice/app/file.c:417:2
    #9 0x7f1d47246804 in workbook_view_new_from_input gnumeric/gnumeric/src/workbook-view.c:1278:3
    #10 0x7f1d472473f0 in workbook_view_new_from_uri gnumeric/gnumeric/src/workbook-view.c:1337:9
    #11 0x4e1031 in convert gnumeric/gnumeric/src/ssconvert.c:721:9
    #12 0x4ded93 in main gnumeric/gnumeric/src/ssconvert.c:913:9
    #13 0x7f1d3fce478f in __libc_start_main (/usr/lib/libc.so.6+0x2078f)
    #14 0x437c58 in _start (apps/bin/ssconvert+0x437c58)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV gnumeric/gnumeric/plugins/excel/ms-chart.c:2830 xl_chart_read_end

--
Juha Kylmänen