/* The following is written to tickle a specific bug in the macro
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/* The following is written to tickle a specific bug in the macro
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table code (now hopefully fixed), which doesn't insert new included
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table code (now hopefully fixed), which doesn't insert new included
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files in the #including file's list in the proper place. They
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files in the #including file's list in the proper place. They
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should be sorted by the number of the line which #included them, in
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should be sorted by the number of the line which #included them, in
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increasing order, but the sense of the comparison was reversed, so
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increasing order, but the sense of the comparison was reversed, so
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the list ends up being built backwards. This isn't a problem by
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the list ends up being built backwards. This isn't a problem by
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itself, but the code to pick new, non-conflicting line numbers for
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itself, but the code to pick new, non-conflicting line numbers for
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headers alleged to be #included at the same line as some other
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headers alleged to be #included at the same line as some other
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header assumes that the list's line numbers are in ascending order.
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header assumes that the list's line numbers are in ascending order.
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So, given the following input, lineinc1.h gets added to lineinc.c's
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So, given the following input, lineinc1.h gets added to lineinc.c's
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#inclusion list first, at line 10. When the debug info reader
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#inclusion list first, at line 10. When the debug info reader
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tries to add lineinc2.h at line 10 as well, the code will notice the
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tries to add lineinc2.h at line 10 as well, the code will notice the
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duplication --- since there's only one extant element in the list,
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duplication --- since there's only one extant element in the list,
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it'll find it --- and insert it after lineinc1.h, with line 11.
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it'll find it --- and insert it after lineinc1.h, with line 11.
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Since the code is putting the list in order of descending
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Since the code is putting the list in order of descending
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#inclusion line number, the list is now out of order. When we try
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#inclusion line number, the list is now out of order. When we try
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to #include lineinc3.h at line 11, we won't notice the duplication. */
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to #include lineinc3.h at line 11, we won't notice the duplication. */
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#line 10
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#line 10
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#include "lineinc1.h"
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#include "lineinc1.h"
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#line 10
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#line 10
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#include "lineinc2.h"
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#include "lineinc2.h"
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#line 11
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#line 11
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#include "lineinc3.h"
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#include "lineinc3.h"
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int
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int
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main (int argc, char **argv)
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main (int argc, char **argv)
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{
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{
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}
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}
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