217 lines
6.6 KiB
Plaintext
217 lines
6.6 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: 2 <= loc < 3
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file: test.c
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starting at line: 1
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column bits: 7
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test.c: 1|loc: 2|#include "test.h"
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|00000001111111111
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|34567890123456789
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ORDINARY MAP: 1
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source_location interval: 3 <= loc < 4
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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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ORDINARY MAP: 2
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source_location interval: 4 <= loc < 5
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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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ORDINARY MAP: 3
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source_location interval: 5 <= loc < 5005
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file: /usr/include/stdc-predef.h
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starting at line: 1
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column bits: 7
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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: 5005 <= loc < 5006
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file: <command-line>
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starting at line: 1
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column bits: 7
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ORDINARY MAP: 5
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source_location interval: 5006 <= loc < 5134
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file: test.c
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starting at line: 1
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column bits: 7
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test.c: 1|loc: 5006|#include "test.h"
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|55555555555555555
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|00000000000000000
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|00011111111112222
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|78901234567890123
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ORDINARY MAP: 6
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source_location interval: 5134 <= loc < 5416
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file: test.h
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starting at line: 1
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column bits: 7
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test.h: 1|loc: 5134|extern int foo ();
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|555555555555555555
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|111111111111111111
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|333334444444444555
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|567890123456789012
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test.h: 2|loc: 5262|
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test.h: 3|loc: 5390|#define PLUS(A, B) A + B
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|555555555555555555555555
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|333333333444444444444444
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|999999999000000000011111
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|123456789012345678901234
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ORDINARY MAP: 7
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source_location interval: 5416 <= loc < 6314
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file: test.c
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starting at line: 2
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column bits: 7
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test.c: 2|loc: 5416|
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test.c: 3|loc: 5544|int
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|555
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|555
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|444
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|567
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test.c: 4|loc: 5672|main (int argc, char **argv)
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|5555555555555555555555555555
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|6666666666666666666666666667
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|7777777888888888899999999990
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|3456789012345678901234567890
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test.c: 5|loc: 5800|{
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|5
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|8
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|0
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|1
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test.c: 6|loc: 5928| int a = PLUS (1,2);
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|555555555555555555555
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|999999999999999999999
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|233333333334444444444
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|901234567890123456789
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test.c: 7|loc: 6056| int b = PLUS (3,4);
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|666666666666666666666
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|000000000000000000000
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|555666666666677777777
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|789012345678901234567
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test.c: 8|loc: 6184| return 0;
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|66666666666
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|11111111111
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|88888999999
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|56789012345
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test.c: 9|loc: 6312|}
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|6
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|3
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|1
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|3
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UNALLOCATED LOCATIONS
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source_location interval: 6314 <= 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 6067
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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: 6073, 5410
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test.c:7:17: note: token 0 has x-location == 6073
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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 == 5410
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1: 5412, 5412
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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 == 5412
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#define PLUS(A, B) A + B
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^
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2: 6075, 5414
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test.c:7:19: note: token 2 has x-location == 6075
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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 == 5414
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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 5939
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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: 5945, 5410
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test.c:6:17: note: token 0 has x-location == 5945
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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 == 5410
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1: 5412, 5412
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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 == 5412
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#define PLUS(A, B) A + B
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^
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2: 5947, 5414
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test.c:6:19: note: token 2 has x-location == 5947
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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 == 5414
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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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