http://gcc.gnu.org/bugzilla/show_bug.cgi?id=56856
Bug #: 56856
Summary: the location of -Wformat warnings point *after* the
format string
Classification: Unclassified
Product: gcc
Version: 4.9.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c++
AssignedTo: [email protected]
ReportedBy: [email protected]
$ cc1plus gcc/testsuite/g++.dg/ext/builtin4.C -Wall
gcc/testsuite/g++.dg/ext/builtin4.C:9:14: warning: format ‘%d’ expects a
matching ‘int’ argument [-Wformat=]
printf("%d"); // { dg-warning "expects a matching" }
^
Unfortunately, the format_tree we get at the time of the warning does not seem
to have a valid location either:
(gdb) p debug_tree(format_tree)
<nop_expr 0x7ffff7567660
type <pointer_type 0x7ffff741d9d8
type <integer_type 0x7ffff741d930 char readonly string-flag QI
size <integer_cst 0x7ffff73f7f80 constant 8>
unit size <integer_cst 0x7ffff73f7fa0 constant 1>
align 8 symtab 0 alias set -1 canonical type 0x7ffff741d930
precision 8 min <integer_cst 0x7ffff73f7fe0 -128> max <integer_cst
0x7ffff7414020 127>
pointer_to_this <pointer_type 0x7ffff741d9d8>>
unsigned SI
size <integer_cst 0x7ffff73f7dc0 constant 32>
unit size <integer_cst 0x7ffff73f7de0 constant 4>
align 32 symtab 0 alias set -1 canonical type 0x7ffff741d9d8
pointer_to_this <pointer_type 0x7ffff7420690>>
readonly constant
arg 0 <addr_expr 0x7ffff7567640
type <pointer_type 0x7ffff755dbd0 type <array_type 0x7ffff755da80>
unsigned SI size <integer_cst 0x7ffff73f7dc0 32> unit size
<integer_cst 0x7ffff73f7de0 4>
align 32 symtab 0 alias set -1 canonical type 0x7ffff755dbd0>
readonly constant
arg 0 <string_cst 0x7ffff7565990 type <array_type 0x7ffff755da80>
readonly constant static "%d\000">>>
