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48e9cc8405
Following the implementation of exec-file-mismatch based on build-id, an attach to a process that runs a modified exec-file was triggering the exec-file-mismatch handling, giving a warning such as: warning: Mismatch between current exec-file /bd/home/philippe/gdb/git/build_termours/gdb/testsuite/outputs/gdb.base/attach/attach and automatically determined exec-file /bd/home/philippe/gdb/git/build_termours/gdb/testsuite/outputs/gdb.base/attach/attach exec-file-mismatch handling is currently "ask" as the build-ids differ when an exec-file is recompiled. This patch ensures that the exec-file-mismatch check is done with an up to date build-id. With this, exec-file-mismatch check will only trigger when the PID file really differs from the (build-id refreshed) current exec-file. Note that the additional check does not (yet) reload the symbols if the exec-file is changed: this reload will happen later if needed. gdb/ChangeLog 2020-06-21 Philippe Waroquiers <philippe.waroquiers@skynet.be> * exec.c (validate_exec_file): Ensure the build-id is up to date by calling reopen_exec_file (that checks file timestamp to decide to re-read the file). gdb/testsuite/ChangeLog 2020-06-21 Philippe Waroquiers <philippe.waroquiers@skynet.be> * gdb.base/attach.exp: Test priority of 'exec-file' changed over 'exec-file-mismatch'. * gdb.base/attach.c: Mark should_exit volatile. * gdb.base/attach2.c: Likewise. Add a comment explaining why the sleep cannot be big. * gdb.base/attach3.c: New file.
28 lines
796 B
C
28 lines
796 B
C
/* This program is intended to be started outside of gdb, and then
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attached to by gdb. Thus, it simply spins in a loop. The loop
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is exited when & if the variable 'should_exit' is non-zero. (It
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is initialized to zero in this program, so the loop will never
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exit unless/until gdb sets the variable to non-zero.)
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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float bidule = 0.0;
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volatile int should_exit = 0;
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int main ()
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{
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int local_i = 0;
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/* Cannot sleep a very long time, as attach.exp assumes the
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process will exit before the standard GDB timeout. */
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sleep( 10 ); /* System call causes register fetch to fail */
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/* This is a known HPUX "feature" */
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while (! should_exit)
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{
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local_i++;
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}
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return (0);
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}
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