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Q59540: "No Symbolic Information" May Be Caused by Using Wrong Linker |
/pubs/pc/reference/microsoft/kb/Q59540/ |
Article: Q59540
Version(s): 1.00 1.10 2.00 2.10 2.20 2.30 2.35 | 2.20 2.30 2.35
Operating System: MS-DOS | OS/2
Flags: ENDUSER | S_LINK
Last Modified: 19-SEP-1990
To debug programs at the source level with CodeView, it is critical
that a proper version of LINK be used. Particular versions of CodeView
are matched to particular versions of LINK and using a version of LINK
newer than the versions matched to a particular version of CodeView
will prevent CodeView from recognizing the symbolic information in the
.EXE file.
This mismatch will cause CodeView to come up in assembly mode and
produce the message "No Symbolic Information," even though the source
files may have been compiled and linked with the correct options for
CodeView symbolic debugging.
The difference between the linkers is in the way they store symbolic
information in .EXE files. A newer version of CodeView generally can
always display symbolic information for programs produced with
previous versions of LINK, but the opposite is NOT true. Using a more
recent linker with an older version of CodeView is where potential
problems arise.
The following information applies to both real-mode CodeView (CV) and
protected-mode CodeView (CVP).
Versions of CodeView prior to Version 3.00 cannot display symbolic
information for .EXE files produced with LINK 5.10. In other words,
if LINK 5.10 (supplied with C 6.00) is used for linking, then
CodeView 3.00 is the ONLY matched version of CodeView that can
display the program's symbolic information.
CodeView Version 2.35 is matched to LINK 5.05 (both were released with
BASIC 7.00). Therefore, CodeView 2.35 is the ONLY version of CodeView
that can display symbolic information for a program linked with LINK
5.05.
For CodeView Versions 2.00, 2.10, 2.20, and 2.30, any linker with a
version number from 3.60 to 5.03 is acceptable.
For CodeView Versions 1.00 and 1.10, LINK versions later than or equal
to 3.51, but earlier than 3.60, must be used.