This fixes ICE on any source compiled with -mint8. Missing definition of UINT16_TYPE (defined to 0) crashed the compiler when it tries to build wchar stuff.
As mentioned in the PR, I chose to add the stdint stuff as a new file. The -mint8 part is only lightly tested because there is no test suite for the non-C compliant code it generates. Without -mint8 avr-stdint.h mimics as many as possible definitions from newlib-stdint.h but for 2 cases where it deviates: - SIG_ATOMIC_TYPE is 8-bit, AVR cannot access 16 bits atomically - [U]INT_FAST8_TYPE is 8-bit because AVR is an 8-bit machine Ok to install? Johann PR target/46261 * config/avr/avr-stdint.h: New file. * config.gcc (avr-*-*,tm_file): Use avr/avr-stdint.h instead of newlib-stdint.h
Index: config.gcc =================================================================== --- config.gcc (revision 187704) +++ config.gcc (working copy) @@ -926,7 +926,7 @@ avr-*-rtems*) extra_objs="avr-devices.o avr-log.o" ;; avr-*-*) - tm_file="elfos.h avr/elf.h avr/avr.h dbxelf.h newlib-stdint.h" + tm_file="elfos.h avr/elf.h avr/avr.h dbxelf.h avr/avr-stdint.h" tmake_file="avr/t-avr avr/t-multilib" use_gcc_stdint=wrap extra_gcc_objs="driver-avr.o avr-devices.o" Index: config/avr/avr-stdint.h =================================================================== --- config/avr/avr-stdint.h (revision 0) +++ config/avr/avr-stdint.h (revision 0) @@ -0,0 +1,66 @@ +/* Definitions for <stdint.h> types on systems using newlib. + Copyright (C) 2012 Free Software Foundation, Inc. + +This file is part of GCC. + +GCC is free software; you can redistribute it and/or modify +it under the terms of the GNU General Public License as published by +the Free Software Foundation; either version 3, or (at your option) +any later version. + +GCC is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with GCC; see the file COPYING3. If not see +<http://www.gnu.org/licenses/>. */ + +/* + The intention of this file is to supply definitions that work with + avr-gcc's -mint8 that sets int to an 8-bit type. + + This file is intended to yield the same results as newlib-stdint.h, + but there are some differences to newlib-stdint.h: + + - AVR is an 8-bit architecture that cannot access 16-bit values + atomically, this SIG_ATOMIC_TYPE is "char". + + - For the same reason, [u]int_fast8_t is defined as 8-bit type. + +*/ + +#define SIG_ATOMIC_TYPE "char" + +#define INT8_TYPE "signed char" +#define INT16_TYPE (INT_TYPE_SIZE == 16 ? "short int" : "long int") +#define INT32_TYPE (INT_TYPE_SIZE == 16 ? "long int" : "long long int") +#define INT64_TYPE (INT_TYPE_SIZE == 16 ? "long long int" : 0) +#define UINT8_TYPE "unsigned char" +#define UINT16_TYPE (INT_TYPE_SIZE == 16 ? "short unsigned int" : "long unsigned int") +#define UINT32_TYPE (INT_TYPE_SIZE == 16 ? "long unsigned int" : "long long unsigned int") +#define UINT64_TYPE (INT_TYPE_SIZE == 16 ? "long long unsigned int" : 0) + +#define INT_LEAST8_TYPE INT8_TYPE +#define INT_LEAST16_TYPE INT16_TYPE +#define INT_LEAST32_TYPE INT32_TYPE +#define INT_LEAST64_TYPE INT64_TYPE +#define UINT_LEAST8_TYPE UINT8_TYPE +#define UINT_LEAST16_TYPE UINT16_TYPE +#define UINT_LEAST32_TYPE UINT32_TYPE +#define UINT_LEAST64_TYPE UINT64_TYPE + +#define INT_FAST8_TYPE INT8_TYPE +#define INT_FAST16_TYPE (INT_TYPE_SIZE == 16 ? "int" : INT16_TYPE) +#define INT_FAST32_TYPE INT32_TYPE +#define INT_FAST64_TYPE INT64_TYPE +#define UINT_FAST8_TYPE UINT8_TYPE +#define UINT_FAST16_TYPE (INT_TYPE_SIZE == 16 ? "unsigned int" : UINT16_TYPE) +#define UINT_FAST32_TYPE UINT32_TYPE +#define UINT_FAST64_TYPE UINT64_TYPE + +#define INTPTR_TYPE PTRDIFF_TYPE +#ifndef UINTPTR_TYPE +#define UINTPTR_TYPE SIZE_TYPE +#endif