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

Test case: http://jutaky.com/fuzzing/gnumeric_case_003-ms-excel-read.c.1621.xls

$ ssconvert gnumeric_case_003-ms-excel-read.c.1621.xls /tmp/out.gnumeric

==5756==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f6d12f02613 bp 0x7fff9acbbe10 sp 0x7fff9acbb560 T0)
    #0 0x7f6d12f02612 in excel_read_FONT gnumeric/gnumeric/plugins/excel/ms-excel-read.c:1621:21
    #1 0x7f6d12efbd1f in excel_read_workbook gnumeric/gnumeric/plugins/excel/ms-excel-read.c:7220:22
    #2 0x7f6d12e8f221 in excel_enc_file_open gnumeric/gnumeric/plugins/excel/boot.c:170:4
    #3 0x7f6d12e90c74 in excel_file_open gnumeric/gnumeric/plugins/excel/boot.c:273:2
    #4 0x7f6d37ae8e30 in go_plugin_loader_module_func_file_open gnumeric/goffice/goffice/app/go-plugin-loader-module.c:282:3
    #5 0x7f6d37afc9b4 in go_plugin_file_opener_open gnumeric/goffice/goffice/app/go-plugin-service.c:685:2
    #6 0x7f6d37b0a1c8 in go_file_opener_open gnumeric/goffice/goffice/app/file.c:417:2
    #7 0x7f6d39489854 in workbook_view_new_from_input gnumeric/gnumeric/src/workbook-view.c:1278:3
    #8 0x7f6d3948a440 in workbook_view_new_from_uri gnumeric/gnumeric/src/workbook-view.c:1337:9
    #9 0x4e1031 in convert gnumeric/gnumeric/src/ssconvert.c:721:9
    #10 0x4ded93 in main gnumeric/gnumeric/src/ssconvert.c:913:9
    #11 0x7f6d31f2578f in __libc_start_main (/usr/lib/libc.so.6+0x2078f)
    #12 0x437c58 in _start (apps/bin/ssconvert+0x437c58)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV gnumeric/gnumeric/plugins/excel/ms-excel-read.c:1621 excel_read_FONT

--
Juha Kylmänen