diff options
| author | Philippe Waroquiers <philippe.waroquiers@skynet.be> | 2019-04-23 23:43:24 +0200 |
|---|---|---|
| committer | Philippe Waroquiers <philippe.waroquiers@skynet.be> | 2019-04-27 13:12:42 +0200 |
| commit | 136afab8c7d8a8a91dbf38e79be4f9dc4125d552 (patch) | |
| tree | 2d6f40d947a3fa3a627cf6b7d0b360f4174d10de /gdb/doc | |
| parent | a45328b93bdd5399da8a9e56817e445cc2068edd (diff) | |
| download | gdb-136afab8c7d8a8a91dbf38e79be4f9dc4125d552.zip gdb-136afab8c7d8a8a91dbf38e79be4f9dc4125d552.tar.gz gdb-136afab8c7d8a8a91dbf38e79be4f9dc4125d552.tar.bz2 | |
Implement show | set may-call-functions [on|off]
Inferior function calls are powerful but might lead to undesired
results such as crashes when calling nested functions (frequently
used in particular in Ada).
This implements a GDB setting to disable calling inferior functions.
Note: the idea is that if/when the 'slash command' patch is pushed,
that this setting can be changed e.g. by using the shortcut /c.
This is version 2 of the patch. It handles all the received comments,
mostly replace 'can-call' by 'may-call', and avoid using
'inferior function call' in factor of 'calling function in the program'.
2019-04-26 Philippe Waroquiers <philippe.waroquiers@skynet.be>
gdb/ChangeLog
* NEWS: Mention the new set|show may-call-functions.
* infcall.c (may_call_functions_p): New variable.
(show_may_call_functions_p): New function.
(call_function_by_hand_dummy): Throws an error if not
may-call-functions.
(_initialize_infcall): Call add_setshow_boolean_cmd for
may-call-functions.
gdb/testsuite/ChangeLog
* gdb.base/callexit.exp: Test may-call-functions off.
gdb/doc/ChangeLog
* gdb.texinfo (Calling): Document the new
set|show may-call-functions.
Diffstat (limited to 'gdb/doc')
| -rw-r--r-- | gdb/doc/ChangeLog | 5 | ||||
| -rw-r--r-- | gdb/doc/gdb.texinfo | 22 |
2 files changed, 27 insertions, 0 deletions
diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog index ba15232..3efed67 100644 --- a/gdb/doc/ChangeLog +++ b/gdb/doc/ChangeLog @@ -1,3 +1,8 @@ +2019-04-27 Philippe Waroquiers <philippe.waroquiers@skynet.be> + + * gdb.texinfo (Calling): Document the new + set|show may-call-functions. + 2019-04-22 Pedro Alves <palves@redhat.com> * gdb.texinfo (Reverse Execution): Mention and xref process record diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo index 0733e1a..cf8333d 100644 --- a/gdb/doc/gdb.texinfo +++ b/gdb/doc/gdb.texinfo @@ -18693,6 +18693,28 @@ the default C@t{++} exception handler and the inferior terminated. Show the current setting of stack unwinding in the functions called by @value{GDBN}. +@item set may-call-functions +@kindex set may-call-functions +@cindex disabling calling functions in the program +@cindex calling functions in the program, disabling +Set permission to call functions in the program. +This controls whether @value{GDBN} will attempt to call functions in +the program, such as with expressions in the @code{print} command. It +defaults to @code{on}. + +To call a function in the program, @value{GDBN} has to temporarily +modify the state of the inferior. This has potentially undesired side +effects. Also, having @value{GDBN} call nested functions is likely to +be erroneous and may even crash the program being debugged. You can +avoid such hazards by forbidding @value{GDBN} from calling functions +in the program being debugged. If calling functions in the program +is forbidden, GDB will throw an error when a command (such as printing +an expression) starts a function call in the program. + +@item show may-call-functions +@kindex show may-call-functions +Show permission to call functions in the program. + @end table @subsection Calling functions with no debug info |