Commit | Line | Data |
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f2785d12 JB |
1 | /* The following is written to tickle a specific bug in the macro |
2 | table code (now hopefully fixed), which doesn't insert new included | |
3 | files in the #including file's list in the proper place. They | |
4 | should be sorted by the number of the line which #included them, in | |
5 | increasing order, but the sense of the comparison was reversed, so | |
6 | the list ends up being built backwards. This isn't a problem by | |
7 | itself, but the code to pick new, non-conflicting line numbers for | |
8 | headers alleged to be #included at the same line as some other | |
9 | header assumes that the list's line numbers are in ascending order. | |
10 | ||
11 | So, given the following input, lineinc1.h gets added to lineinc.c's | |
12 | #inclusion list first, at line 10. When the debug info reader | |
13 | tries to add lineinc2.h at line 10 as well, the code will notice the | |
14 | duplication --- since there's only one extant element in the list, | |
15 | it'll find it --- and insert it after lineinc1.h, with line 11. | |
16 | Since the code is putting the list in order of descending | |
17 | #inclusion line number, the list is now out of order. When we try | |
18 | to #include lineinc3.h at line 11, we won't notice the duplication. */ | |
19 | ||
20 | #line 10 | |
21 | #include "lineinc1.h" | |
22 | #line 10 | |
23 | #include "lineinc2.h" | |
24 | #line 11 | |
25 | #include "lineinc3.h" | |
26 | ||
27 | int | |
28 | main (int argc, char **argv) | |
29 | { | |
dc3a371e | 30 | return 0; |
f2785d12 | 31 | } |