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author | Manuel López-Ibáñez <manu@gcc.gnu.org> | 2014-08-15 16:27:38 +0000 |
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committer | Manuel López-Ibáñez <manu@gcc.gnu.org> | 2014-08-15 16:27:38 +0000 |
commit | 86d2cad9064326411c933cd67313e602f0828419 (patch) | |
tree | 33b0aa533e45e7530cc0f51009ab80fa795e6bd8 /gcc/input.h | |
parent | 8add4868b501067184e8f6d7bead8e982de7752f (diff) |
input.h (in_system_header_at): Add comment.
2014-08-15 Manuel López-Ibáñez <manu@gcc.gnu.org>
* input.h (in_system_header_at): Add comment.
From-SVN: r214028
Diffstat (limited to 'gcc/input.h')
-rw-r--r-- | gcc/input.h | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/gcc/input.h b/gcc/input.h index 1def793ae30..a4fddf0a3b0 100644 --- a/gcc/input.h +++ b/gcc/input.h @@ -59,8 +59,17 @@ extern location_t input_location; ((tree) ((IS_ADHOC_LOC (LOC)) ? get_data_from_adhoc_loc (line_table, (LOC)) \ : NULL)) +/* Return a positive value if LOCATION is the locus of a token that is + located in a system header, O otherwise. It returns 1 if LOCATION + is the locus of a token that is located in a system header, and 2 + if LOCATION is the locus of a token located in a C system header + that therefore needs to be extern "C" protected in C++. + + Note that this function returns 1 if LOCATION belongs to a token + that is part of a macro replacement-list defined in a system + header, but expanded in a non-system file. */ #define in_system_header_at(LOC) \ - ((linemap_location_in_system_header_p (line_table, LOC))) + (linemap_location_in_system_header_p (line_table, LOC)) void dump_line_table_statistics (void); |