| Consider compiling test.c, with this content: |
| VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV |
| #include "test.h" |
| |
| int |
| main (int argc, char **argv) |
| { |
| int a = PLUS (1,2); |
| int b = PLUS (3,4); |
| return 0; |
| } |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| ...where test.h has this content: |
| VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV |
| extern int foo (); |
| |
| #define PLUS(A, B) A + B |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
| |
| |
| The undocumented -fdump-internal-locations option outputs this information |
| to stderr, showing what each source_location value means. Source code |
| lines are quoted, showing both per-line source_location values and |
| per-line&column source_location values (written vertically under the |
| corresponding character of source code). |
| |
| VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV |
| RESERVED LOCATIONS |
| source_location interval: 0 <= loc < 2 |
| |
| ORDINARY MAP: 0 |
| source_location interval: 32 <= loc < 64 |
| file: test.c |
| starting at line: 1 |
| column bits: 12 |
| range bits: 5 |
| test.c: 1|loc: 32|#include "test.h" |
| |69269258258148147 |
| |46802468024680246 |
| |
| ORDINARY MAP: 1 |
| source_location interval: 64 <= loc < 96 |
| file: <built-in> |
| starting at line: 0 |
| column bits: 0 |
| range bits: 0 |
| |
| ORDINARY MAP: 2 |
| source_location interval: 96 <= loc < 128 |
| file: <command-line> |
| starting at line: 0 |
| column bits: 0 |
| range bits: 0 |
| |
| ORDINARY MAP: 3 |
| source_location interval: 128 <= loc < 160128 |
| file: /usr/include/stdc-predef.h |
| starting at line: 1 |
| column bits: 12 |
| range bits: 5 |
| (contents of /usr/include/stdc-predef.h snipped for brevity) |
| |
| ORDINARY MAP: 4 |
| source_location interval: 160128 <= loc < 160160 |
| file: <command-line> |
| starting at line: 32 |
| column bits: 12 |
| range bits: 5 |
| |
| ORDINARY MAP: 5 |
| source_location interval: 160160 <= loc < 164256 |
| file: test.c |
| starting at line: 1 |
| column bits: 12 |
| range bits: 5 |
| test.c: 1|loc:160160|#include "test.h" |
| |00000000000000000 |
| |12223334445556667 |
| |92582581481470470 |
| |24680246802468024 |
| |
| ORDINARY MAP: 6 |
| source_location interval: 164256 <= loc < 173280 |
| file: test.h |
| starting at line: 1 |
| column bits: 12 |
| range bits: 5 |
| test.h: 1|loc:164256|extern int foo (); |
| |444444444444444444 |
| |233344455566677788 |
| |825814814704703603 |
| |802468024680246802 |
| test.h: 2|loc:168352| |
| | |
| | |
| | |
| | |
| test.h: 3|loc:172448|#define PLUS(A, B) A + B |
| |222222222222222223333333 |
| |455566677788889990001112 |
| |814704703603692692582581 |
| |024680246802468024680246 |
| |
| ORDINARY MAP: 7 |
| source_location interval: 173280 <= loc < 202016 |
| file: test.c |
| starting at line: 2 |
| column bits: 12 |
| range bits: 5 |
| test.c: 2|loc:173280| |
| | |
| | |
| | |
| | |
| test.c: 3|loc:177376|int |
| |777 |
| |444 |
| |047 |
| |802 |
| test.c: 4|loc:181472|main (int argc, char **argv) |
| |1111111111111111222222222222 |
| |5556666777888999000111222333 |
| |0360369269258258148147047036 |
| |4680246802468024680246802468 |
| test.c: 5|loc:185568|{ |
| |5 |
| |6 |
| |0 |
| |0 |
| test.c: 6|loc:189664| int a = PLUS (1,2); |
| |999999999900000000000 |
| |677788899900011122233 |
| |926925825814814704703 |
| |680246802468024680246 |
| test.c: 7|loc:193760| int b = PLUS (3,4); |
| |333333344444444444444 |
| |788899900011122233344 |
| |925825814814704703603 |
| |246802468024680246802 |
| test.c: 8|loc:197856| return 0; |
| |77778888888 |
| |89990001112 |
| |82581481470 |
| |80246802468 |
| test.c: 9|loc:201952|} |
| |1 |
| |9 |
| |8 |
| |4 |
| |
| UNALLOCATED LOCATIONS |
| source_location interval: 202016 <= loc < 2147483633 |
| |
| MACRO 1: PLUS (7 tokens) |
| source_location interval: 2147483633 <= loc < 2147483640 |
| test.c:7:11: note: expansion point is location 194115 |
| int b = PLUS (3,4); |
| ^~~~ |
| |
| map->start_location: 2147483633 |
| macro_locations: |
| 0: 194304, 173088 |
| test.c:7:17: note: token 0 has x-location == 194304 |
| int b = PLUS (3,4); |
| ^ |
| |
| test.c:7:17: note: token 0 has y-location == 173088 |
| 1: 173152, 173152 |
| In file included from test.c:1:0: |
| test.h:3:22: note: token 1 has x-location == y-location == 173152 |
| #define PLUS(A, B) A + B |
| ^ |
| |
| 2: 194368, 173216 |
| test.c:7:19: note: token 2 has x-location == 194368 |
| int b = PLUS (3,4); |
| ^ |
| |
| test.c:7:19: note: token 2 has y-location == 173216 |
| 3: 0, 2947526575 |
| cc1: note: token 3 has x-location == 0 |
| cc1: note: token 3 has y-location == 2947526575 |
| 4: 2947526575, 2947526575 |
| x-location == y-location == 2947526575 encodes token # 800042942 |
| 5: 2947526575, 2947526575 |
| x-location == y-location == 2947526575 encodes token # 800042942 |
| 6: 2947526575, 2947526575 |
| x-location == y-location == 2947526575 encodes token # 800042942 |
| |
| MACRO 0: PLUS (7 tokens) |
| source_location interval: 2147483640 <= loc < 2147483647 |
| test.c:6:11: note: expansion point is location 190019 |
| int a = PLUS (1,2); |
| ^~~~ |
| |
| map->start_location: 2147483640 |
| macro_locations: |
| 0: 190208, 173088 |
| test.c:6:17: note: token 0 has x-location == 190208 |
| int a = PLUS (1,2); |
| ^ |
| |
| test.c:6:17: note: token 0 has y-location == 173088 |
| 1: 173152, 173152 |
| In file included from test.c:1:0: |
| test.h:3:22: note: token 1 has x-location == y-location == 173152 |
| #define PLUS(A, B) A + B |
| ^ |
| |
| 2: 190272, 173216 |
| test.c:6:19: note: token 2 has x-location == 190272 |
| int a = PLUS (1,2); |
| ^ |
| |
| test.c:6:19: note: token 2 has y-location == 173216 |
| 3: 0, 2947526575 |
| cc1: note: token 3 has x-location == 0 |
| cc1: note: token 3 has y-location == 2947526575 |
| 4: 2947526575, 2947526575 |
| x-location == y-location == 2947526575 encodes token # 800042935 |
| 5: 2947526575, 2947526575 |
| x-location == y-location == 2947526575 encodes token # 800042935 |
| 6: 2947526575, 2947526575 |
| x-location == y-location == 2947526575 encodes token # 800042935 |
| |
| MAX_SOURCE_LOCATION |
| source_location interval: 2147483647 <= loc < 2147483648 |
| |
| AD-HOC LOCATIONS |
| source_location interval: 2147483648 <= loc < 4294967295 |
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ |
