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| author | Simon Marchi <simon.marchi@ericsson.com> | 2015-11-19 10:17:36 -0500 |
|---|---|---|
| committer | Simon Marchi <simon.marchi@ericsson.com> | 2015-11-19 10:17:46 -0500 |
| commit | bb82e93484cdd56c67efd52b869a6123b2623f6c (patch) | |
| tree | abca26349e9a33797e05f737b57fa35f7a477e50 /gdb/nat | |
| parent | 9a0847060d5823ec520ebf0c3e307e26442e5b8c (diff) | |
Fix iov_len calculation in aarch64_linux_set_debug_regs
There is this build failure when building in C++:
/home/simark/src/binutils-gdb/gdb/nat/aarch64-linux-hw-point.c: In function ‘void aarch64_linux_set_debug_regs(const aarch64_debug_reg_state*, int, int)’:
/home/simark/src/binutils-gdb/gdb/nat/aarch64-linux-hw-point.c:564:64: error: ‘count’ cannot appear in a constant-expression
iov.iov_len = (offsetof (struct user_hwdebug_state, dbg_regs[count - 1])
^
We can simplify the computation and make g++ happy at the same time by
formulating as:
size of fixed part + size of variable part
thus...
size of fixed part + count * size of one variable part element
thus...
offsetof (struct user_hwdebug_state, dbg_regs) + count * sizeof (regs.dbg_reg[0]);
gdb/ChangeLog:
* nat/aarch64-linux-hw-point.c (aarch64_linux_set_debug_regs): Change
form of iov_len computation.
Diffstat (limited to 'gdb/nat')
| -rw-r--r-- | gdb/nat/aarch64-linux-hw-point.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/gdb/nat/aarch64-linux-hw-point.c b/gdb/nat/aarch64-linux-hw-point.c index 1a5fa6ac2a..dcbfa98c3b 100644 --- a/gdb/nat/aarch64-linux-hw-point.c +++ b/gdb/nat/aarch64-linux-hw-point.c @@ -561,8 +561,8 @@ aarch64_linux_set_debug_regs (const struct aarch64_debug_reg_state *state, ctrl = watchpoint ? state->dr_ctrl_wp : state->dr_ctrl_bp; if (count == 0) return; - iov.iov_len = (offsetof (struct user_hwdebug_state, dbg_regs[count - 1]) - + sizeof (regs.dbg_regs [count - 1])); + iov.iov_len = (offsetof (struct user_hwdebug_state, dbg_regs) + + count * sizeof (regs.dbg_regs[0])); for (i = 0; i < count; i++) { |