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Name Status Last Modified Last Commit
lp:~lttng/babeltrace/trunk 1 Development 2020-04-23 03:46:39 UTC 2020-04-23
4165. Fix: lib: use appropriate format spec...

Author: Simon Marchi
Revision Date: 2020-04-23 03:46:39 UTC

Fix: lib: use appropriate format specifier to print message iterator class


  babeltrace2 --debug /some/trace

... results in the following crash:

    ==31705==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7f5b9c25ae22 bp 0x7ffc64114490 sp 0x7ffc64113ba8 T0)
    ==31705==The signal is caused by a READ memory access.
    ==31705==Hint: address points to the zero page.
        #0 0x7f5b9c25ae21 (/usr/lib/x86_64-linux-gnu/
        #1 0x7f5b9c1d231f (/usr/lib/x86_64-linux-gnu/
        #2 0x7f5b9c1fef4d in __interceptor_vsnprintf (/usr/lib/x86_64-linux-gnu/
        #3 0x7f5b9c1ff286 in snprintf (/usr/lib/x86_64-linux-gnu/
        #4 0x7f5b9bdf61c3 in format_component_class /home/smarchi/src/babeltrace/src/lib/lib-logging.c:1061
        #5 0x7f5b9bdfad46 in handle_conversion_specifier_bt /home/smarchi/src/babeltrace/src/lib/lib-logging.c:1451
        #6 0x7f5b9bead260 in bt_common_custom_vsnprintf /home/smarchi/src/babeltrace/src/common/common.c:1727
        #7 0x7f5b9bdfb10b in bt_lib_log /home/smarchi/src/babeltrace/src/lib/lib-logging.c:1496
        #8 0x7f5b9be32965 in bt_message_iterator_class_set_seek_beginning_methods /home/smarchi/src/babeltrace/src/lib/graph/message-iterator-class.c:138

This is due to an object being printed with the wrong format specifier.
`C` is for component class objects, use `I` instead, since we are
printing a message iterator object.

Change-Id: Ie3985d8b7c4e02ac7d09aee84bfe46ea4bab87e9
Signed-off-by: Simon Marchi <>
Reviewed-by: Geneviève Bastien <>
Reviewed-by: Philippe Proulx <>

lp:~lttng/babeltrace/packaging-daily 1 Development 2016-04-23 14:51:52 UTC 2016-04-23
40. Add libelf and libdw builddeps

Author: Michael Jeanson
Revision Date: 2016-04-23 14:51:52 UTC

Add libelf and libdw builddeps

lp:~nuclearbob/babeltrace/packaging-daily (Has a merge proposal) 1 Development 2014-04-18 21:56:10 UTC 2014-04-18
33. Added python3-config

Author: Max Brustkern
Revision Date: 2014-04-18 21:32:30 UTC

Added python3-config

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