[Bug symtab/17863] New: Inlined functions calls ignored while stepping if the first instruction doesn't have a source line

[Bug symtab/17863] New: Inlined functions calls ignored while stepping if the first instruction doesn't have a source line

[guardiankain at gmail dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=17863

            Bug ID: 17863
           Summary: Inlined functions calls ignored while stepping if the
                    first instruction doesn't have a source line
           Product: gdb
           Version: 7.8
            Status: NEW
          Severity: normal
          Priority: P2
         Component: symtab
          Assignee: unassigned at sourceware dot org
          Reporter: guardiankain at gmail dot com

It seems that gdb ignores the scopes to which the instruction belongs to if the
source line is not known. It just groups it with the last source line found
before.

In most cases this is fine, but if the instruction in question is at the start
of the call site of the inlined function (it is a first instruction of that
function) when stepping the process_event_stop_test routine will just skip over
it as still being in the step range of the source line of the statement before
the inlined call. This means that the next instruction of the inlined function
that actually have a source line will be also automatically stepped over
because that instruction is not at the beginning of the inlined function.

In essence this will make gdb skip the whole call statement and inlined
function at that call site.

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