trace.py: fix compiler warning (iovisor#2094)

Compiler shows warning "incompatible integer to pointer conversion initializing" while compiling bpf program. This patch adds necessary typecast when assigning PT_REGS_PARAM vaules to struct pt_regs pointer
yezhengmao1 · Dec 27, 2018 · 05765ee · 05765ee
1 parent a94cbbf
commit 05765ee
Showing 1 changed file with 6 additions and 6 deletions.
diff --git a/tools/trace.py b/tools/trace.py
@@ -216,17 +216,17 @@ def _parse_action(self, action):
  }
 
  aliases_indarg = {
- "arg1": "({u64 _val; struct pt_regs *_ctx = PT_REGS_PARM1(ctx);"
+ "arg1": "({u64 _val; struct pt_regs *_ctx = (struct pt_regs *)PT_REGS_PARM1(ctx);"
  " bpf_probe_read(&_val, sizeof(_val), &(PT_REGS_PARM1(_ctx))); _val;})",
- "arg2": "({u64 _val; struct pt_regs *_ctx = PT_REGS_PARM2(ctx);"
+ "arg2": "({u64 _val; struct pt_regs *_ctx = (struct pt_regs *)PT_REGS_PARM2(ctx);"
  " bpf_probe_read(&_val, sizeof(_val), &(PT_REGS_PARM2(_ctx))); _val;})",
- "arg3": "({u64 _val; struct pt_regs *_ctx = PT_REGS_PARM3(ctx);"
+ "arg3": "({u64 _val; struct pt_regs *_ctx = (struct pt_regs *)PT_REGS_PARM3(ctx);"
  " bpf_probe_read(&_val, sizeof(_val), &(PT_REGS_PARM3(_ctx))); _val;})",
- "arg4": "({u64 _val; struct pt_regs *_ctx = PT_REGS_PARM4(ctx);"
+ "arg4": "({u64 _val; struct pt_regs *_ctx = (struct pt_regs *)PT_REGS_PARM4(ctx);"
  " bpf_probe_read(&_val, sizeof(_val), &(PT_REGS_PARM4(_ctx))); _val;})",
- "arg5": "({u64 _val; struct pt_regs *_ctx = PT_REGS_PARM5(ctx);"
+ "arg5": "({u64 _val; struct pt_regs *_ctx = (struct pt_regs *)PT_REGS_PARM5(ctx);"
  " bpf_probe_read(&_val, sizeof(_val), &(PT_REGS_PARM5(_ctx))); _val;})",
- "arg6": "({u64 _val; struct pt_regs *_ctx = PT_REGS_PARM6(ctx);"
+ "arg6": "({u64 _val; struct pt_regs *_ctx = (struct pt_regs *)PT_REGS_PARM6(ctx);"
  " bpf_probe_read(&_val, sizeof(_val), &(PT_REGS_PARM6(_ctx))); _val;})",
  }