Red Hat Bugzilla – Bug 801775
Unexpected error setting watchpoint
Last modified: 2016-01-31 21:27:43 EST
Description of problem:
GDB fails to continue after setting a watchpoint.
Version-Release number of selected component (if applicable):
# rpm -q gdb
Steps to Reproduce:
# cat z.c
static int p;
p = 2;
# gcc z.c -g
# gdb -q ./a.out
Reading symbols from /root/gdb/Sanity/basic-smoke-test/a.out...done.
(gdb) b main
Breakpoint 1 at 0x100004fc: file z.c, line 5.
Starting program: /root/gdb/Sanity/basic-smoke-test/a.out
Breakpoint 1, main () at z.c:5
5 p = 2;
(gdb) watch p
Hardware watchpoint 2: p
Unexpected error setting breakpoint or watchpoint: Invalid argument.
0x0000000010000500 in main () at z.c:5
5 p = 2;
On x86_64 this isn't happening.
non-x86* watchpoints are very broken now, archer-jankratochvil-watchpoint3 has been updated only for x86* but not yet for non-x86* archs.
I did not expect anyone would use it from Fedora...
I have reproduced the problem with gdb-18.104.22.16810722-11.el7.ppc64.
I have tried to build gdb-22.214.171.12420120-29.fc17.ppc64 and it works OK.
Unaware why RHEL-7 is using so obsolete packages.
This request was resolved in Red Hat Enterprise Linux 7.0.
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