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RISC-V/GAS: Correct an `expr' global shadowing error for pre-4.8 GCC

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Correct a commit f0531ed6a4 ("Compress loads/stores with implicit 0
offset.") regression and remove a `-Wshadow' compilation error:

cc1: warnings being treated as errors
.../gas/config/tc-riscv.c: In function 'riscv_handle_implicit_zero_offset':
.../gas/config/tc-riscv.c:1194: error: declaration of 'expr' shadows a global declaration
.../gas/expr.h:180: error: shadowed declaration is here
make[4]: *** [tc-riscv.o] Error 1

which for versions of GCC before 4.8 prevents GAS for RISC-V targets
from being built.  See also GCC PR c/53066.

	gas/
	* config/tc-riscv.c (riscv_handle_implicit_zero_offset): Rename
	`expr' parameter to `ep'.
This commit is contained in:
Maciej W. Rozycki 2018-02-05 14:05:51 +00:00
parent e65b1a7868
commit 89424b1d69
2 changed files with 8 additions and 3 deletions
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5
gas/ChangeLog
View File

@ -1,3 +1,8 @@
2018-02-05 Maciej W. Rozycki <macro@mips.com>
* config/tc-riscv.c (riscv_handle_implicit_zero_offset): Rename
`expr' parameter to `ep'.
2018-02-05 Maciej W. Rozycki <macro@mips.com>
* testsuite/gas/mips/reginfo-2.d: New test.

6
gas/config/tc-riscv.c
View File

@ -1191,14 +1191,14 @@ my_getSmallExpression (expressionS *ep, bfd_reloc_code_real_type *reloc,
an implicit offset was detected. */
static bfd_boolean
riscv_handle_implicit_zero_offset (expressionS *expr, const char *s)
riscv_handle_implicit_zero_offset (expressionS *ep, const char *s)
{
/* Check whether there is only a single bracketed expression left.
If so, it must be the base register and the constant must be zero. */
if (*s == '(' && strchr (s + 1, '(') == 0)
{
expr->X_op = O_constant;
expr->X_add_number = 0;
ep->X_op = O_constant;
ep->X_add_number = 0;
return TRUE;
}