diff options
| -rw-r--r-- | bits.h | 61 | ||||
| -rw-r--r-- | evaluate.c | 5 | ||||
| -rw-r--r-- | expand.c | 52 | ||||
| -rw-r--r-- | lib.c | 4 | ||||
| -rw-r--r-- | lib.h | 3 | ||||
| -rw-r--r-- | linearize.c | 19 | ||||
| -rw-r--r-- | simplify.c | 123 | ||||
| -rw-r--r-- | sparse.1 | 12 | ||||
| -rw-r--r-- | symbol.h | 8 | ||||
| -rw-r--r-- | validation/optim/lsr-asr.c | 42 | ||||
| -rw-r--r-- | validation/optim/shift-big.c | 82 | ||||
| -rw-r--r-- | validation/optim/shift-shift.c | 149 | ||||
| -rw-r--r-- | validation/optim/zext-asr.c | 13 | ||||
| -rw-r--r-- | validation/shift-negative.c | 17 | ||||
| -rw-r--r-- | validation/shift-undef-long.c | 21 | ||||
| -rw-r--r-- | validation/shift-undef.c | 164 |
16 files changed, 755 insertions, 20 deletions
@@ -0,0 +1,61 @@ +/* SPDX-License-Identifier: MIT */ +/* + * Helper functions for manipulation & testing of integer values + * like zero or sign-extensions. + * + * Copyright (C) 2017 Luc Van Oostenryck + * + */ + +#ifndef BITS_H +#define BITS_H + +static inline unsigned long long sign_bit(unsigned size) +{ + return 1ULL << (size - 1); +} + +static inline unsigned long long sign_mask(unsigned size) +{ + unsigned long long sbit = sign_bit(size); + return sbit - 1; +} + +static inline unsigned long long bits_mask(unsigned size) +{ + unsigned long long sbit = sign_bit(size); + return sbit | (sbit - 1); +} + + +static inline long long zero_extend(long long val, unsigned size) +{ + return val & bits_mask(size); +} + +static inline long long sign_extend(long long val, unsigned size) +{ + if (val & sign_bit(size)) + val |= ~sign_mask(size); + return val; +} + +/// +// sign extend @val but only if exactly representable +static inline long long sign_extend_safe(long long val, unsigned size) +{ + unsigned long long mask = bits_mask(size); + if (!(val & ~mask)) + val = sign_extend(val, size); + return val; +} + +static inline long long bits_extend(long long val, unsigned size, int is_signed) +{ + val = zero_extend(val, size); + if (is_signed) + val = sign_extend(val, size); + return val; +} + +#endif @@ -1325,6 +1325,11 @@ static int evaluate_assign_op(struct expression *expr) goto Cast; if (!restricted_value(expr->right, t)) return 1; + } else if (op == SPECIAL_SHR_ASSIGN || op == SPECIAL_SHL_ASSIGN) { + // shifts do integer promotions, but that's it. + unrestrict(expr->right, sclass, &s); + target = integer_promotion(s); + goto Cast; } else if (!(sclass & TYPE_RESTRICT)) goto usual; /* source and target would better be identical restricted */ @@ -158,11 +158,25 @@ Float: expr->type = EXPR_FVALUE; } -static int check_shift_count(struct expression *expr, struct symbol *ctype, unsigned int count) +static void check_shift_count(struct expression *expr, struct expression *right) { - warning(expr->pos, "shift too big (%u) for type %s", count, show_typename(ctype)); - count &= ctype->bit_size-1; - return count; + struct symbol *ctype = expr->ctype; + long long count = get_longlong(right); + + if (count < 0) { + if (!Wshift_count_negative) + return; + warning(expr->pos, "shift count is negative (%lld)", count); + return; + } + if (count < ctype->bit_size) + return; + if (ctype->type == SYM_NODE) + ctype = ctype->ctype.base_type; + + if (!Wshift_count_overflow) + return; + warning(expr->pos, "shift too big (%llu) for type %s", count, show_typename(ctype)); } /* @@ -183,12 +197,9 @@ static int simplify_int_binop(struct expression *expr, struct symbol *ctype) return 0; r = right->value; if (expr->op == SPECIAL_LEFTSHIFT || expr->op == SPECIAL_RIGHTSHIFT) { - if (r >= ctype->bit_size) { - if (conservative) - return 0; - r = check_shift_count(expr, ctype, r); - right->value = r; - } + if (conservative) + return 0; + check_shift_count(expr, right); } if (left->type != EXPR_VALUE) return 0; @@ -559,11 +570,30 @@ static int expand_conditional(struct expression *expr) return cost + cond_cost + BRANCH_COST; } - + +static void check_assignment(struct expression *expr) +{ + struct expression *right; + + switch (expr->op) { + case SPECIAL_SHL_ASSIGN: + case SPECIAL_SHR_ASSIGN: + right = expr->right; + if (right->type != EXPR_VALUE) + break; + check_shift_count(expr, right); + break; + } + return; +} + static int expand_assignment(struct expression *expr) { expand_expression(expr->left); expand_expression(expr->right); + + if (!conservative) + check_assignment(expr); return SIDE_EFFECTS; } @@ -274,6 +274,8 @@ int Wpointer_to_int_cast = 1; int Wptr_subtraction_blows = 0; int Wreturn_void = 0; int Wshadow = 0; +int Wshift_count_negative = 1; +int Wshift_count_overflow = 1; int Wsizeof_bool = 0; int Wtautological_compare = 0; int Wtransparent_union = 0; @@ -701,6 +703,8 @@ static const struct flag warnings[] = { { "ptr-subtraction-blows", &Wptr_subtraction_blows }, { "return-void", &Wreturn_void }, { "shadow", &Wshadow }, + { "shift-count-negative", &Wshift_count_negative }, + { "shift-count-overflow", &Wshift_count_overflow }, { "sizeof-bool", &Wsizeof_bool }, { "pointer-arith", &Wpointer_arith }, { "sparse-error", &Wsparse_error }, @@ -34,6 +34,7 @@ #include "compat.h" #include "ptrlist.h" #include "utils.h" +#include "bits.h" #define DO_STRINGIFY(x) #x #define STRINGIFY(x) DO_STRINGIFY(x) @@ -163,6 +164,8 @@ extern int Wpointer_to_int_cast; extern int Wptr_subtraction_blows; extern int Wreturn_void; extern int Wshadow; +extern int Wshift_count_negative; +extern int Wshift_count_overflow; extern int Wsizeof_bool; extern int Wtautological_compare; extern int Wtransparent_union; diff --git a/linearize.c b/linearize.c index 15d77907..f3a824fe 100644 --- a/linearize.c +++ b/linearize.c @@ -995,6 +995,23 @@ static pseudo_t linearize_store_gen(struct entrypoint *ep, return value; } +static void taint_undefined_behaviour(struct instruction *insn) +{ + pseudo_t src2; + + switch (insn->opcode) { + case OP_LSR: + case OP_ASR: + case OP_SHL: + src2 = insn->src2; + if (src2->type != PSEUDO_VAL) + break; + if ((unsigned long long)src2->value >= insn->size) + insn->tainted = 1; + break; + } +} + static pseudo_t add_binary_op(struct entrypoint *ep, struct symbol *ctype, int op, pseudo_t left, pseudo_t right) { struct instruction *insn = alloc_typed_instruction(op, ctype); @@ -1398,6 +1415,7 @@ static pseudo_t linearize_assignment(struct entrypoint *ep, struct expression *e oldvalue = cast_pseudo(ep, oldvalue, target->ctype, ctype); opcode = map_opcode(op_trans[expr->op - SPECIAL_BASE], ctype); dst = add_binary_op(ep, ctype, opcode, oldvalue, value); + taint_undefined_behaviour(dst->def); value = cast_pseudo(ep, dst, ctype, expr->ctype); } value = linearize_store_gen(ep, value, &ad); @@ -1502,6 +1520,7 @@ static pseudo_t linearize_binop(struct entrypoint *ep, struct expression *expr) src2 = linearize_expression(ep, expr->right); op = map_opcode(opcode[expr->op], expr->ctype); dst = add_binary_op(ep, expr->ctype, op, src1, src2); + taint_undefined_behaviour(dst->def); return dst; } @@ -472,12 +472,18 @@ static pseudo_t eval_insn(struct instruction *insn) res = left % right; break; case OP_SHL: + if (ur >= size) + goto undef; res = left << right; break; case OP_LSR: + if (ur >= size) + goto undef; res = ul >> ur; break; case OP_ASR: + if (ur >= size) + goto undef; res = left >> right; break; /* Logical */ @@ -533,18 +539,117 @@ undef: return NULL; } +static long long check_shift_count(struct instruction *insn, unsigned long long uval) +{ + unsigned int size = insn->size; + long long sval = uval; + + if (uval < size) + return uval; + + sval = sign_extend_safe(sval, size); + sval = sign_extend_safe(sval, bits_in_int); + if (sval < 0) + insn->src2 = value_pseudo(sval); + if (insn->tainted) + return sval; + + if (sval < 0 && Wshift_count_negative) + warning(insn->pos, "shift count is negative (%lld)", sval); + if (sval > 0 && Wshift_count_overflow) { + struct symbol *ctype = insn->type; + const char *tname; + if (ctype->type == SYM_NODE) + ctype = ctype->ctype.base_type; + tname = show_typename(ctype); + warning(insn->pos, "shift too big (%llu) for type %s", sval, tname); + } + insn->tainted = 1; + return sval; +} -static int simplify_asr(struct instruction *insn, pseudo_t pseudo, long long value) +static int simplify_shift(struct instruction *insn, pseudo_t pseudo, long long value) { - unsigned int size = operand_size(insn, pseudo); + struct instruction *def; + unsigned long long nval; + unsigned int size; + pseudo_t src2; - if (value >= size) { - warning(insn->pos, "right shift by bigger than source value"); - return replace_with_pseudo(insn, value_pseudo(0)); - } if (!value) return replace_with_pseudo(insn, pseudo); + value = check_shift_count(insn, value); + if (value < 0) + return 0; + + size = insn->size; + switch (insn->opcode) { + case OP_ASR: + if (value >= size) + return 0; + if (pseudo->type != PSEUDO_REG) + break; + def = pseudo->def; + switch (def->opcode) { + case OP_LSR: + case OP_ASR: + if (def == insn) // cyclic DAG! + break; + src2 = def->src2; + if (src2->type != PSEUDO_VAL) + break; + nval = src2->value; + if (nval > insn->size || nval == 0) + break; + value += nval; + if (def->opcode == OP_LSR) + insn->opcode = OP_LSR; + else if (value >= size) + value = size - 1; + goto new_value; + + case OP_ZEXT: + // transform: + // zext.N %t <- (O) %a + // asr.N %r <- %t, C + // into + // zext.N %t <- (O) %a + // lsr.N %r <- %t, C + insn->opcode = OP_LSR; + return REPEAT_CSE; + } + break; + case OP_LSR: + size = operand_size(insn, pseudo); + /* fall through */ + case OP_SHL: + if (value >= size) + goto zero; + if (pseudo->type != PSEUDO_REG) + break; + def = pseudo->def; + if (def->opcode == insn->opcode) { + if (def == insn) // cyclic DAG! + break; + src2 = def->src2; + if (src2->type != PSEUDO_VAL) + break; + nval = src2->value; + if (nval > insn->size) + break; + value += nval; + goto new_value; + } + break; + } return 0; + +new_value: + if (value < size) { + insn->src2 = value_pseudo(value); + return replace_pseudo(insn, &insn->src1, pseudo->def->src1); + } +zero: + return replace_with_pseudo(insn, value_pseudo(0)); } static int simplify_mul_div(struct instruction *insn, long long value) @@ -652,14 +757,14 @@ static int simplify_constant_rightside(struct instruction *insn) } /* Fall through */ case OP_ADD: - case OP_SHL: - case OP_LSR: case_neutral_zero: if (!value) return replace_with_pseudo(insn, insn->src1); return 0; case OP_ASR: - return simplify_asr(insn, insn->src1, value); + case OP_SHL: + case OP_LSR: + return simplify_shift(insn, insn->src1, value); case OP_MODU: case OP_MODS: if (value == 1) @@ -339,6 +339,18 @@ Such declarations can lead to error-prone code. Sparse does not issue these warnings by default. . .TP +.B \-Wshift-count-negative +Warn if a shift count is negative. + +Sparse issues these warnings by default. +. +.TP +.B \-Wshift-count-overflow +Warn if a shift count is bigger than the operand's width. + +Sparse issues these warnings by default. +. +.TP .B \-Wsizeof-bool Warn when checking the sizeof a _Bool. @@ -453,6 +453,14 @@ static inline int get_sym_type(struct symbol *type) return type->type; } +static inline long long extend_value(long long val, struct symbol *ctype) +{ + int is_signed = !(ctype->ctype.modifiers & MOD_UNSIGNED); + unsigned size = ctype->bit_size; + + return bits_extend(val, size, is_signed); +} + static inline struct symbol *lookup_keyword(struct ident *ident, enum namespace ns) { if (!ident->keyword) diff --git a/validation/optim/lsr-asr.c b/validation/optim/lsr-asr.c new file mode 100644 index 00000000..aee46940 --- /dev/null +++ b/validation/optim/lsr-asr.c @@ -0,0 +1,42 @@ +int lsrasr0(unsigned int x) +{ + return ((int) (x >> 15)) >> 15; +} + +int lsrasr1(unsigned int x) +{ + return ((int) (x >> 16)) >> 15; +} + +int lsrasr2(unsigned int x) +{ + return ((int) (x >> 16)) >> 16; +} + +/* + * check-name: lsr-asr + * check-command: test-linearize -Wno-decl $file + * + * check-output-start +lsrasr0: +.L0: + <entry-point> + lsr.32 %r3 <- %arg1, $30 + ret.32 %r3 + + +lsrasr1: +.L2: + <entry-point> + lsr.32 %r7 <- %arg1, $31 + ret.32 %r7 + + +lsrasr2: +.L4: + <entry-point> + ret.32 $0 + + + * check-output-end + */ diff --git a/validation/optim/shift-big.c b/validation/optim/shift-big.c new file mode 100644 index 00000000..84bcd2ce --- /dev/null +++ b/validation/optim/shift-big.c @@ -0,0 +1,82 @@ +typedef unsigned int u32; +typedef int s32; + +s32 asr31(s32 a) { return a >> 31; } +s32 asr32(s32 a) { return a >> 32; } +s32 asr33(s32 a) { return a >> 33; } + +u32 lsr31(u32 a) { return a >> 31; } +u32 lsr32(u32 a) { return a >> 32; } +u32 lsr33(u32 a) { return a >> 33; } + +u32 shl31(u32 a) { return a << 31; } +u32 shl32(u32 a) { return a << 32; } +u32 shl33(u32 a) { return a << 33; } + +/* + * check-name: optim/shift-big.c + * check-command: test-linearize -Wno-decl -m64 $file + * + * check-error-ignore + * check-output-start +asr31: +.L0: + <entry-point> + asr.32 %r2 <- %arg1, $31 + ret.32 %r2 + + +asr32: +.L2: + <entry-point> + asr.32 %r5 <- %arg1, $32 + ret.32 %r5 + + +asr33: +.L4: + <entry-point> + asr.32 %r8 <- %arg1, $33 + ret.32 %r8 + + +lsr31: +.L6: + <entry-point> + lsr.32 %r11 <- %arg1, $31 + ret.32 %r11 + + +lsr32: +.L8: + <entry-point> + ret.32 $0 + + +lsr33: +.L10: + <entry-point> + ret.32 $0 + + +shl31: +.L12: + <entry-point> + shl.32 %r20 <- %arg1, $31 + ret.32 %r20 + + +shl32: +.L14: + <entry-point> + ret.32 $0 + + +shl33: +.L16: + <entry-point> + ret.32 $0 + + + * check-output-end + */ diff --git a/validation/optim/shift-shift.c b/validation/optim/shift-shift.c new file mode 100644 index 00000000..12a4b7d4 --- /dev/null +++ b/validation/optim/shift-shift.c @@ -0,0 +1,149 @@ +unsigned int shl0(unsigned int x) +{ + return x << 15 << 15; +} + +unsigned int shl1(unsigned int x) +{ + return x << 16 << 15; +} + +unsigned int shl2(unsigned int x) +{ + return x << 16 << 16; +} + +unsigned int shl3(unsigned int x) +{ + return x << 12 << 10 << 10; +} + + +unsigned int lsr0(unsigned int x) +{ + return x >> 15 >> 15; +} + +unsigned int lsr1(unsigned int x) +{ + return x >> 16 >> 15; +} + +unsigned int lsr2(unsigned int x) +{ + return x >> 16 >> 16; +} + +unsigned int lsr3(unsigned int x) +{ + return x >> 12 >> 10 >> 10; +} + + +int asr0(int x) +{ + return x >> 15 >> 15; +} + +int asr1(int x) +{ + return x >> 16 >> 15; +} + +int asr2(int x) +{ + return x >> 16 >> 16; +} + +int asr3(int x) +{ + return x >> 12 >> 10 >> 10; +} + +/* + * check-name: shift-shift + * check-command: test-linearize -Wno-decl $file + * + * check-output-start +shl0: +.L0: + <entry-point> + shl.32 %r3 <- %arg1, $30 + ret.32 %r3 + + +shl1: +.L2: + <entry-point> + shl.32 %r7 <- %arg1, $31 + ret.32 %r7 + + +shl2: +.L4: + <entry-point> + ret.32 $0 + + +shl3: +.L6: + <entry-point> + ret.32 $0 + + +lsr0: +.L8: + <entry-point> + lsr.32 %r20 <- %arg1, $30 + ret.32 %r20 + + +lsr1: +.L10: + <entry-point> + lsr.32 %r24 <- %arg1, $31 + ret.32 %r24 + + +lsr2: +.L12: + <entry-point> + ret.32 $0 + + +lsr3: +.L14: + <entry-point> + ret.32 $0 + + +asr0: +.L16: + <entry-point> + asr.32 %r37 <- %arg1, $30 + ret.32 %r37 + + +asr1: +.L18: + <entry-point> + asr.32 %r41 <- %arg1, $31 + ret.32 %r41 + + +asr2: +.L20: + <entry-point> + asr.32 %r45 <- %arg1, $31 + ret.32 %r45 + + +asr3: +.L22: + <entry-point> + asr.32 %r50 <- %arg1, $31 + ret.32 %r50 + + + * check-output-end + */ diff --git a/validation/optim/zext-asr.c b/validation/optim/zext-asr.c new file mode 100644 index 00000000..5f235ad8 --- /dev/null +++ b/validation/optim/zext-asr.c @@ -0,0 +1,13 @@ +unsigned short foo(unsigned short a) +{ + return a >> 16; +} + +/* + * check-name: zext-asr + * check-command: test-linearize -Wno-decl $file + * + * check-output-ignore + * check-output-contains: ret\\..*\\$0 + * check-output-excludes: asr\\. + */ diff --git a/validation/shift-negative.c b/validation/shift-negative.c new file mode 100644 index 00000000..fff5cf12 --- /dev/null +++ b/validation/shift-negative.c @@ -0,0 +1,17 @@ +unsigned int fn1(unsigned int a) { return a >> -1; } +unsigned int fn2(unsigned int a) { return a >> ~0; } + +unsigned int fo1(unsigned int a) { return a >> ((a & 0) | -1); } +unsigned int fo2(unsigned int a) { return a >> ((a & 0) ^ ~0); } + +/* + * check-name: shift-negative + * check-command: sparse -Wno-decl $file + * + * check-error-start +shift-negative.c:1:45: warning: shift count is negative (-1) +shift-negative.c:2:45: warning: shift count is negative (-1) +shift-negative.c:4:59: warning: shift count is negative (-1) +shift-negative.c:5:59: warning: shift count is negative (-1) + * check-error-end + */ diff --git a/validation/shift-undef-long.c b/validation/shift-undef-long.c new file mode 100644 index 00000000..32626743 --- /dev/null +++ b/validation/shift-undef-long.c @@ -0,0 +1,21 @@ +static unsigned very_big_shift(unsigned int a) +{ + unsigned r = 0; + r |= a << (0ULL ^ ~0U); + r |= a << ((( signed long long) ~0U) + 1); + r |= a << (((unsigned long long) ~0U) + 1); + r |= a << (~((unsigned long long) ~0U)); + return r; +} + +/* + * check-name: shift-undef-long + * check-command: sparse -m64 $file + * + * check-error-start +shift-undef-long.c:4:16: warning: shift too big (4294967295) for type unsigned int +shift-undef-long.c:5:16: warning: shift too big (4294967296) for type unsigned int +shift-undef-long.c:6:16: warning: shift too big (4294967296) for type unsigned int +shift-undef-long.c:7:16: warning: shift count is negative (-4294967296) + * check-error-end + */ diff --git a/validation/shift-undef.c b/validation/shift-undef.c new file mode 100644 index 00000000..4e94fa23 --- /dev/null +++ b/validation/shift-undef.c @@ -0,0 +1,164 @@ +int simple(int s, unsigned int u, int p) +{ + s = s >> 100; + u = u >> 101; + u = u << 102; + s = s >> -1; + u = u >> -2; + u = u << -3; + if (0) return s >> 103; + if (0) return u >> 104; + if (0) return u << 105; + if (0) return s >> -4; + if (0) return u >> -5; + if (0) return u << -6; + if (p && 0) return s >> 106; + if (p && 0) return u >> 107; + if (p && 0) return u << 108; + if (p && 0) return s >> -7; + if (p && 0) return u >> -8; + if (p && 0) return u << -9; + s = s >> ((p & 0) + 109); u ^= p; // reloaded because now == 0 + u = u >> ((p & 0) + 110); u ^= p; // reloaded because now == 0 + u = u << ((p & 0) + 111); u ^= p; // reloaded because now == 0 + s = s >> ((p & 0) + -10); + u = u >> ((p & 0) + -11); u ^= p; // reloaded because now == 0 + u = u << ((p & 0) + -12); u ^= p; // reloaded because now == 0 + return s + u; +} + +int compound(int s, unsigned int u, int p) +{ + s >>= 100; + u >>= 101; + u <<= 102; + s >>= -1; + u >>= -2; + u <<= -3; + if (0) return s >>= 103; + if (0) return u >>= 104; + if (0) return u <<= 105; + if (0) return s >>= -4; + if (0) return u >>= -5; + if (0) return u <<= -6; + if (p && 0) return s >>= 106; + if (p && 0) return u >>= 107; + if (p && 0) return u <<= 108; + if (p && 0) return s >>= -7; + if (p && 0) return u >>= -8; + if (p && 0) return u <<= -9; + s >>= ((p & 0) + 109); u ^= p; // reloaded because now == 0 + u >>= ((p & 0) + 110); u ^= p; // reloaded because now == 0 + u <<= ((p & 0) + 111); u ^= p; // reloaded because now == 0 + s >>= ((p & 0) + -10); + u >>= ((p & 0) + -11); u ^= p; // reloaded because now == 0 + u <<= ((p & 0) + -12); u ^= p; // reloaded because now == 0 + return s + u; +} + +int ok(int s, unsigned int u, int p) +{ + // GCC doesn't warn on these + if (0 && (s >> 100)) return 0; + if (0 && (u >> 101)) return 0; + if (0 && (u << 102)) return 0; + if (0 && (s >> -1)) return 0; + if (0 && (u >> -2)) return 0; + if (0 && (u << -3)) return 0; + if (0 && (s >>= 103)) return 0; + if (0 && (u >>= 104)) return 0; + if (0 && (u <<= 105)) return 0; + if (0 && (s >>= -4)) return 0; + if (0 && (u >>= -5)) return 0; + if (0 && (u <<= -6)) return 0; + return 1; +} + +struct bf { + unsigned int u:8; + int s:8; +}; + +int bf(struct bf *p) +{ + unsigned int r = 0; + r += p->s << 8; + r += p->s >> 8; + r += p->u >> 8; + return r; +} + +/* + * The following is used in the kernel at several places + * It shouldn't emit any warnings. + */ +typedef unsigned long long u64; +typedef unsigned int u32; + +extern void hw_w32x2(u32 hi, u32 lo); + +inline void hw_w64(u64 val) +{ + hw_w32x2(val >> 32, (u32) val); +} + +void hw_write(u32 val) +{ + hw_w64(val); +} + +/* + * check-name: shift too big or negative + * check-command: sparse -Wno-decl $file + * + * check-error-start +shift-undef.c:3:15: warning: shift too big (100) for type int +shift-undef.c:4:15: warning: shift too big (101) for type unsigned int +shift-undef.c:5:15: warning: shift too big (102) for type unsigned int +shift-undef.c:6:15: warning: shift count is negative (-1) +shift-undef.c:7:15: warning: shift count is negative (-2) +shift-undef.c:8:15: warning: shift count is negative (-3) +shift-undef.c:9:25: warning: shift too big (103) for type int +shift-undef.c:10:25: warning: shift too big (104) for type unsigned int +shift-undef.c:11:25: warning: shift too big (105) for type unsigned int +shift-undef.c:12:25: warning: shift count is negative (-4) +shift-undef.c:13:25: warning: shift count is negative (-5) +shift-undef.c:14:25: warning: shift count is negative (-6) +shift-undef.c:15:30: warning: shift too big (106) for type int +shift-undef.c:16:30: warning: shift too big (107) for type unsigned int +shift-undef.c:17:30: warning: shift too big (108) for type unsigned int +shift-undef.c:18:30: warning: shift count is negative (-7) +shift-undef.c:19:30: warning: shift count is negative (-8) +shift-undef.c:20:30: warning: shift count is negative (-9) +shift-undef.c:21:29: warning: shift too big (109) for type int +shift-undef.c:22:29: warning: shift too big (110) for type unsigned int +shift-undef.c:23:29: warning: shift too big (111) for type unsigned int +shift-undef.c:24:29: warning: shift count is negative (-10) +shift-undef.c:25:29: warning: shift count is negative (-11) +shift-undef.c:26:29: warning: shift count is negative (-12) +shift-undef.c:32:11: warning: shift too big (100) for type int +shift-undef.c:33:11: warning: shift too big (101) for type unsigned int +shift-undef.c:34:11: warning: shift too big (102) for type unsigned int +shift-undef.c:35:11: warning: shift count is negative (-1) +shift-undef.c:36:11: warning: shift count is negative (-2) +shift-undef.c:37:11: warning: shift count is negative (-3) +shift-undef.c:38:25: warning: shift too big (103) for type int +shift-undef.c:39:25: warning: shift too big (104) for type unsigned int +shift-undef.c:40:25: warning: shift too big (105) for type unsigned int +shift-undef.c:41:25: warning: shift count is negative (-4) +shift-undef.c:42:25: warning: shift count is negative (-5) +shift-undef.c:43:25: warning: shift count is negative (-6) +shift-undef.c:44:30: warning: shift too big (106) for type int +shift-undef.c:45:30: warning: shift too big (107) for type unsigned int +shift-undef.c:46:30: warning: shift too big (108) for type unsigned int +shift-undef.c:47:30: warning: shift count is negative (-7) +shift-undef.c:48:30: warning: shift count is negative (-8) +shift-undef.c:49:30: warning: shift count is negative (-9) +shift-undef.c:50:26: warning: shift too big (109) for type int +shift-undef.c:51:26: warning: shift too big (110) for type int +shift-undef.c:52:26: warning: shift too big (111) for type int +shift-undef.c:53:26: warning: shift count is negative (-10) +shift-undef.c:54:26: warning: shift count is negative (-11) +shift-undef.c:55:26: warning: shift count is negative (-12) + * check-error-end + */ |