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gdb, btrace: fix error diagnostics

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When we improved error messages in

    cd393cec3a gdb, btrace: improve error messages

we cleared the original errno.  When the error reason can not be explained
in a more detailed error message, and we fall back to the default error
message, it now gives Success as error.

Restore the original errno to fix that.
This commit is contained in:
Markus Metzger 2022-02-18 13:53:31 +01:00
parent 5eb2254a1d
commit b792eb47f2
1 changed files with 3 additions and 2 deletions
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5
gdb/nat/linux-btrace.c
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@ -422,7 +422,8 @@ cpu_supports_bts (void)
static void
diagnose_perf_event_open_fail ()
{
switch (errno)
int orig_errno = errno;
switch (orig_errno)
{
case EPERM:
case EACCES:
@ -443,7 +444,7 @@ diagnose_perf_event_open_fail ()
break;
}
error (_("Failed to start recording: %s"), safe_strerror (errno));
error (_("Failed to start recording: %s"), safe_strerror (orig_errno));
}
/* Get the linux version of a btrace_target_info. */