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* macrotab.h (struct macro_source_file): Doc fix.

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Jim Blandy 2002-11-06 20:57:41 +00:00
parent c9e3887989
commit f8302a5753
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gdb/ChangeLog
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@ -1,3 +1,7 @@
2002-11-06 Jim Blandy <jimb@redhat.com>
* macrotab.h (struct macro_source_file): Doc fix.
2002-11-05 Jeff Johnston <jjohnstn@redhat.com>
* varobj.c (child_exists, cplus_number_of_children): Change

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gdb/macrotab.h
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@ -83,6 +83,15 @@ struct macro_table;
tree mapping the #inclusions that contributed to the compilation
unit, with the main source file as its root.
Beware --- not every source file mentioned in a compilation unit's
symtab structures will appear in the #inclusion tree! As of Oct
2002, GCC does record the effect of #line directives in the source
line info, but not in macro info. This means that GDB's symtabs
(built from the former, among other things) may mention filenames
that the #inclusion tree (built from the latter) doesn't have any
record of. See macroscope.c:sal_macro_scope for how to accomodate
this.
It's worth noting that libcpp has a simpler way of representing all
this, which we should consider switching to. It might even be
suitable for ordinary non-macro line number info.