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Fix 'command -p' lookup if hash table entry exists (re: c9ccee86)

If a command's path was previously added to the hash table as a
'tracked alias', then the hash table entry was used, bypassing
the default utility path search activated by 'command -p'.

'command -p' activates a SH_DEFPATH shell state. The bug was caused
by a failure to check for this state before using the hash table.
This check needs to be added in four places.

src/cmd/ksh93/sh/path.c,
src/cmd/ksh93/sh/xec.c:
- path_search(), path_spawn(), sh_exec(), sh_ntfork(): Only consult
  the hash table, which is shp->track_tree, if the SH_DEFPATH shell
  state is not active.

src/cmd/ksh93/tests/path.sh:
- Add regress tests checking that 'command -p' and 'command -p -v'
  still search in the default path if a hash table entry exists for
  the command searched.
This commit is contained in:
Martijn Dekker 2020-08-17 20:23:39 +01:00
parent acf84e9633
commit d03e948bcd
5 changed files with 44 additions and 7 deletions

View file

@ -17,4 +17,4 @@
* David Korn <dgk@research.att.com> *
* *
***********************************************************************/
#define SH_RELEASE "93u+m 2020-08-13"
#define SH_RELEASE "93u+m 2020-08-17"