gdb/379: Regression: The step command does not stop in the right place.

[mec at shout dot net]

>Number:         379
>Category:       gdb
>Synopsis:       Regression: The step command does not stop in the right place.
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Feb 23 22:58:01 PST 2002
>Closed-Date:
>Last-Modified:
>Originator:     mec@shout.net
>Release:        gdb HEAD%20020222
>Organization:
>Environment:
[target=native host=i686-pc-linux-gnu%rh-7.2 gdb=HEAD%20020222 gcc=2.95.3 glibc=vendor goption=-gstabs+]
>Description:
The step command fails to stop in the right place.
This desynchronizes several test scripts:
  gdb.base/call-ar-st.exp: many tests
  gdb.base/display.exp: many tests
  gdb.base/funcargs.exp: many tests
  gdb.base/shlib-call.exp: step into mainshr1
  gdb.base/step-line.exp: many tests
  gdb.base/step-test.exp: large struct by value
  gdb.mi/simplerun.exp: exec-finish
  gdb.mi/simplerun.exp: step at main
  gdb.mi/simplerun.exp: step to callee4
  gdb.mi0/simplerun.exp: exec-finish
  gdb.mi0/simplerun.exp: step at main
  gdb.mi0/simplerun.exp: step to callee4

These are regressions versus gdb=HEAD%20020216.

The bug is sensitive to the gcc version and the goption.

Here is an excerpt from gdb.log:

  (gdb) PASS: gdb.base/step-test.exp: run to pass large struct
  step
  59         exit (0);
  (gdb) FAIL: gdb.base/step-test.exp: large struct by value
>How-To-Repeat:
Download gdb from cvs HEAD dated 20020222.
Use gcc 2.95.3 as the compiler to build test programs.
Run step-line.exp and step-test.exp (these are the purest test programs).
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: