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https://github.com/autc04/Retro68.git
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233 lines
6.8 KiB
Plaintext
233 lines
6.8 KiB
Plaintext
Consider compiling test.c, with this content:
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VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
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#include "test.h"
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int
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main (int argc, char **argv)
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{
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int a = PLUS (1,2);
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int b = PLUS (3,4);
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return 0;
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}
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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...where test.h has this content:
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VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
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extern int foo ();
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#define PLUS(A, B) A + B
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The undocumented -fdump-internal-locations option outputs this information
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to stderr, showing what each source_location value means. Source code
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lines are quoted, showing both per-line source_location values and
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per-line&column source_location values (written vertically under the
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corresponding character of source code).
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VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV
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RESERVED LOCATIONS
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source_location interval: 0 <= loc < 2
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ORDINARY MAP: 0
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source_location interval: 32 <= loc < 64
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file: test.c
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starting at line: 1
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column bits: 12
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range bits: 5
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test.c: 1|loc: 32|#include "test.h"
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|69269258258148147
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|46802468024680246
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ORDINARY MAP: 1
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source_location interval: 64 <= loc < 96
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file: <built-in>
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starting at line: 0
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column bits: 0
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range bits: 0
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ORDINARY MAP: 2
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source_location interval: 96 <= loc < 128
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file: <command-line>
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starting at line: 0
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column bits: 0
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range bits: 0
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ORDINARY MAP: 3
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source_location interval: 128 <= loc < 160128
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file: /usr/include/stdc-predef.h
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starting at line: 1
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column bits: 12
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range bits: 5
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(contents of /usr/include/stdc-predef.h snipped for brevity)
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ORDINARY MAP: 4
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source_location interval: 160128 <= loc < 160160
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file: <command-line>
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starting at line: 32
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column bits: 12
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range bits: 5
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ORDINARY MAP: 5
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source_location interval: 160160 <= loc < 164256
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file: test.c
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starting at line: 1
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column bits: 12
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range bits: 5
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test.c: 1|loc:160160|#include "test.h"
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|00000000000000000
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|12223334445556667
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|92582581481470470
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|24680246802468024
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ORDINARY MAP: 6
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source_location interval: 164256 <= loc < 173280
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file: test.h
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starting at line: 1
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column bits: 12
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range bits: 5
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test.h: 1|loc:164256|extern int foo ();
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|444444444444444444
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|233344455566677788
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|825814814704703603
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|802468024680246802
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test.h: 2|loc:168352|
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test.h: 3|loc:172448|#define PLUS(A, B) A + B
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|222222222222222223333333
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|455566677788889990001112
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|814704703603692692582581
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|024680246802468024680246
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ORDINARY MAP: 7
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source_location interval: 173280 <= loc < 202016
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file: test.c
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starting at line: 2
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column bits: 12
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range bits: 5
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test.c: 2|loc:173280|
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test.c: 3|loc:177376|int
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|777
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|444
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|047
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|802
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test.c: 4|loc:181472|main (int argc, char **argv)
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|1111111111111111222222222222
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|5556666777888999000111222333
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|0360369269258258148147047036
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|4680246802468024680246802468
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test.c: 5|loc:185568|{
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|5
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|6
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|0
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|0
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test.c: 6|loc:189664| int a = PLUS (1,2);
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|999999999900000000000
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|677788899900011122233
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|926925825814814704703
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|680246802468024680246
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test.c: 7|loc:193760| int b = PLUS (3,4);
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|333333344444444444444
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|788899900011122233344
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|925825814814704703603
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|246802468024680246802
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test.c: 8|loc:197856| return 0;
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|77778888888
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|89990001112
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|82581481470
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|80246802468
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test.c: 9|loc:201952|}
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|1
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|9
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|8
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|4
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UNALLOCATED LOCATIONS
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source_location interval: 202016 <= loc < 2147483633
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MACRO 1: PLUS (7 tokens)
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source_location interval: 2147483633 <= loc < 2147483640
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test.c:7:11: note: expansion point is location 194115
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int b = PLUS (3,4);
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^~~~
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map->start_location: 2147483633
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macro_locations:
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0: 194304, 173088
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test.c:7:17: note: token 0 has x-location == 194304
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int b = PLUS (3,4);
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^
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test.c:7:17: note: token 0 has y-location == 173088
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1: 173152, 173152
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In file included from test.c:1:0:
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test.h:3:22: note: token 1 has x-location == y-location == 173152
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#define PLUS(A, B) A + B
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^
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2: 194368, 173216
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test.c:7:19: note: token 2 has x-location == 194368
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int b = PLUS (3,4);
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^
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test.c:7:19: note: token 2 has y-location == 173216
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3: 0, 2947526575
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cc1: note: token 3 has x-location == 0
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cc1: note: token 3 has y-location == 2947526575
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4: 2947526575, 2947526575
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x-location == y-location == 2947526575 encodes token # 800042942
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5: 2947526575, 2947526575
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x-location == y-location == 2947526575 encodes token # 800042942
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6: 2947526575, 2947526575
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x-location == y-location == 2947526575 encodes token # 800042942
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MACRO 0: PLUS (7 tokens)
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source_location interval: 2147483640 <= loc < 2147483647
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test.c:6:11: note: expansion point is location 190019
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int a = PLUS (1,2);
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^~~~
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map->start_location: 2147483640
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macro_locations:
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0: 190208, 173088
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test.c:6:17: note: token 0 has x-location == 190208
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int a = PLUS (1,2);
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^
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test.c:6:17: note: token 0 has y-location == 173088
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1: 173152, 173152
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In file included from test.c:1:0:
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test.h:3:22: note: token 1 has x-location == y-location == 173152
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#define PLUS(A, B) A + B
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^
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2: 190272, 173216
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test.c:6:19: note: token 2 has x-location == 190272
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int a = PLUS (1,2);
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^
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test.c:6:19: note: token 2 has y-location == 173216
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3: 0, 2947526575
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cc1: note: token 3 has x-location == 0
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cc1: note: token 3 has y-location == 2947526575
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4: 2947526575, 2947526575
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x-location == y-location == 2947526575 encodes token # 800042935
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5: 2947526575, 2947526575
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x-location == y-location == 2947526575 encodes token # 800042935
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6: 2947526575, 2947526575
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x-location == y-location == 2947526575 encodes token # 800042935
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MAX_SOURCE_LOCATION
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source_location interval: 2147483647 <= loc < 2147483648
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AD-HOC LOCATIONS
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source_location interval: 2147483648 <= loc < 4294967295
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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