aarch64: move bogus assertion Asserting "idx" to be non-negative when subsequent code handles this case is bogus. In fact the assertion triggers e.g. when mistakenly using the arm32 comment character @ following an instruction. While doing this I also noticed that despite there being local variables "detail" and "idx", not all places where they could be used did actually make use of them, so this is being adjusted at once. Finally, for the code to be slightly more robust, also change comparisons against -1 to such checking for a (non-)negative value. gas/ 2014-10-20 Jan Beulich * config/tc-aarch64.c (output_operand_error_record): Move down assertion of idx being non-negative. Use local variables when available. --- a/gas/config/tc-aarch64.c +++ b/gas/config/tc-aarch64.c @@ -3939,11 +3939,11 @@ output_info (const char *format, ...) static void output_operand_error_record (const operand_error_record *record, char *str) { - int idx = record->detail.index; + const aarch64_operand_error *detail = &record->detail; + int idx = detail->index; const aarch64_opcode *opcode = record->opcode; - enum aarch64_opnd opd_code = (idx != -1 ? opcode->operands[idx] + enum aarch64_opnd opd_code = (idx >= 0 ? opcode->operands[idx] : AARCH64_OPND_NIL); - const aarch64_operand_error *detail = &record->detail; switch (detail->kind) { @@ -3955,20 +3955,22 @@ output_operand_error_record (const opera case AARCH64_OPDE_RECOVERABLE: case AARCH64_OPDE_FATAL_SYNTAX_ERROR: case AARCH64_OPDE_OTHER_ERROR: - gas_assert (idx >= 0); /* Use the prepared error message if there is, otherwise use the operand description string to describe the error. */ if (detail->error != NULL) { - if (detail->index == -1) + if (idx < 0) as_bad (_("%s -- `%s'"), detail->error, str); else as_bad (_("%s at operand %d -- `%s'"), - detail->error, detail->index + 1, str); + detail->error, idx + 1, str); } else - as_bad (_("operand %d should be %s -- `%s'"), idx + 1, + { + gas_assert (idx >= 0); + as_bad (_("operand %d should be %s -- `%s'"), idx + 1, aarch64_get_operand_desc (opd_code), str); + } break; case AARCH64_OPDE_INVALID_VARIANT: @@ -4073,28 +4075,28 @@ output_operand_error_record (const opera if (detail->data[0] != detail->data[1]) as_bad (_("%s out of range %d to %d at operand %d -- `%s'"), detail->error ? detail->error : _("immediate value"), - detail->data[0], detail->data[1], detail->index + 1, str); + detail->data[0], detail->data[1], idx + 1, str); else as_bad (_("%s expected to be %d at operand %d -- `%s'"), detail->error ? detail->error : _("immediate value"), - detail->data[0], detail->index + 1, str); + detail->data[0], idx + 1, str); break; case AARCH64_OPDE_REG_LIST: if (detail->data[0] == 1) as_bad (_("invalid number of registers in the list; " "only 1 register is expected at operand %d -- `%s'"), - detail->index + 1, str); + idx + 1, str); else as_bad (_("invalid number of registers in the list; " "%d registers are expected at operand %d -- `%s'"), - detail->data[0], detail->index + 1, str); + detail->data[0], idx + 1, str); break; case AARCH64_OPDE_UNALIGNED: as_bad (_("immediate value should be a multiple of " "%d at operand %d -- `%s'"), - detail->data[0], detail->index + 1, str); + detail->data[0], idx + 1, str); break; default: