Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/c-c++-common/Warray-bounds.c @ 131:84e7813d76e9
gcc-8.2
| author | mir3636 |
|---|---|
| date | Thu, 25 Oct 2018 07:37:49 +0900 |
| parents | |
| children |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/c-c++-common/Warray-bounds.c Thu Oct 25 07:37:49 2018 +0900 @@ -0,0 +1,236 @@ +/* PR tree-optimization/82588 - missing -Warray-bounds on an excessively + large index + { dg-do compile } + { dg-require-effective-target alloca } + { dg-options "-O2 -Warray-bounds -ftrack-macro-expansion=0" } */ + +#include "../gcc.dg/range.h" + +#define offsetof(T, m) __builtin_offsetof (T, m) + +typedef struct AX { int n; char ax[]; } AX; + +typedef struct A1 { int i; char a1[1]; } A1; +typedef struct B { int i; struct A1 a1x[]; } B; + +void sink (int, ...); + +#define R(min, max) signed_range (min, max) +#define T(expr) sink (0, expr) + +struct __attribute__ ((packed)) S16 { unsigned i: 16; }; + +void farr_char (void) +{ + extern char ac[]; + + T (ac[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds of .char *\\\[]." } */ + T (ac[-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (ac[0]); + + T (ac[DIFF_MAX - 1]); + T (ac[DIFF_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (ac[DIFF_MAX + (size_t)1]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (ac[SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (ac[R (DIFF_MAX - 1, DIFF_MAX)]); + T (ac[R (DIFF_MIN + 1, -1)]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (ac[R (DIFF_MIN + 1, 0)]); + T (ac[R (-1, 0)]); + T (ac[R (-1, 1)]); +} + +void farr_s16 (void) +{ + extern struct S16 ax[]; + + T (ax[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds of .(struct )?S16 *\\\[]." } */ + T (ax[-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (ax[0]); + + T (ax[DIFF_MAX / 2 - 1]); + T (ax[DIFF_MAX / 2]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (ax[DIFF_MAX / 2 + (size_t)1]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (ax[SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (ax[R (DIFF_MIN, -1)]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (ax[R (DIFF_MAX / 2 - 1, DIFF_MAX)]); + T (ax[R (DIFF_MAX / 2, DIFF_MAX)]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ +} + +void farr_s16_7 (void) +{ + extern struct S16 ax_7[][7]; + + T (ax_7[0][DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds of .(struct )?S16 *\\\[7]." } */ + T (ax_7[0][-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (ax_7[0][0]); + T (ax_7[0][7]); /* { dg-warning "array subscript 7 is above array bounds of .(struct )?S16 *\\\[7]." } */ + T (ax_7[0][8]); /* { dg-warning "array subscript 8 is above array bounds of .(struct )?S16 *\\\[7]." } */ + + T (ax_7[0][DIFF_MAX / 2]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (ax_7[0][SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (ax_7[DIFF_MIN][0]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds of .(struct )?S16 *\\\[]\\\[7]." } */ + T (ax_7[-1][0]); /* { dg-warning "array subscript -1 is below array bounds" } */ + + T (ax_7[DIFF_MAX / 2][0]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (ax_7[SIZE_MAX][0]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + ptrdiff_t i = R (DIFF_MIN, -1); + T (ax_7[i][0]); /* { dg-warning "array subscript -1 is below array bounds" } */ + + T (ax_7[R (DIFF_MIN, -1)][0]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (ax_7[R (DIFF_MIN, 0)][0]); + T (ax_7[R (-2, -1)][0]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (ax_7[R (-1, 0)][0]); + T (ax_7[R (-1, 1)][0]); + T (ax_7[R (-1, 7)][0]); + T (ax_7[R (-1, DIFF_MAX)][0]); + + T (ax_7[R ( 1, DIFF_MAX)][0]); + T (ax_7[R (DIFF_MAX / 14 - 1, DIFF_MAX)][0]); + + i = R (DIFF_MAX / 14, DIFF_MAX); + T (ax_7[i][0]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (ax_7[0][R (DIFF_MIN, 0)]); + T (ax_7[0][R (-1, 0)]); + T (ax_7[0][R (-1, 1)]); + T (ax_7[0][R (-1, 7)]); + T (ax_7[0][R (-1, DIFF_MAX)]); + T (ax_7[0][R (-1, DIFF_MAX)]); + + T (ax_7[0][R (1, DIFF_MAX)]); + T (ax_7[0][R (7, DIFF_MAX)]); /* { dg-warning "array subscript 7 is above array bounds" } */ + +} + +void farr_x_5_7 (void) +{ + extern struct S16 a[][5][7]; + + T (a[0][0][-3]); /* { dg-warning "array subscript -3 is below array bounds of .(struct )?S16 *\\\[7]." } */ + T (a[0][-2][0]); /* { dg-warning "array subscript -2 is below array bounds of .(struct )?S16 *\\\[5]\\\[7]." } */ + T (a[-1][0][0]); /* { dg-warning "array subscript -1 is below array bounds of .(struct )?S16 *\\\[]\\\[5]\\\[7]." } */ + T (a[R (-4, -3)][0][0]); /* { dg-warning "array subscript -3 is below array bounds" } */ + T (a[0][R (-3, -2)][0]); /* { dg-warning "array subscript -2 is below array bounds" } */ + T (a[0][0][R (-2, -1)]); /* { dg-warning "array subscript -1 is below array bounds" } */ +} + + +void fax (struct AX *p) +{ + T (p->ax[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" } */ + T (p->ax[-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (p->ax[0]); + T (p->ax[DIFF_MAX - sizeof *p - 1]); + T (p->ax[DIFF_MAX - sizeof *p]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->ax[DIFF_MAX - sizeof *p + 1]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->ax[SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->ax[R (DIFF_MIN, -1)]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (p->ax[R (-1, 1)]); + T (p->ax[R (0, DIFF_MAX - 1)]); + T (p->ax[R (DIFF_MAX - 1, DIFF_MAX)]);/* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ +} + +void fa1 (struct A1 *p) +{ + T (p->a1[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" } */ + T (p->a1[-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (p->a1[0]); + T (p->a1[9]); + T (p->a1[DIFF_MAX - offsetof (A1, a1) - 1]); + T (p->a1[DIFF_MAX - offsetof (A1, a1)]);/* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1[DIFF_MAX - offsetof (A1, a1) + 1]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1[SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ +} + +void fb (struct B *p) +{ + T (p->a1x->a1[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" } */ + T (p->a1x->a1[-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (p->a1x->a1[0]); + T (p->a1x->a1[9]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x->a1[DIFF_MAX - sizeof *p]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x->a1[DIFF_MAX - sizeof *p + 1]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x->a1[SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (p->a1x[1].a1[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" } */ + T (p->a1x[1].a1[-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (p->a1x[1].a1[0]); + T (p->a1x[1].a1[9]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[1].a1[DIFF_MAX - sizeof *p]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[1].a1[DIFF_MAX - sizeof *p + 1]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[1].a1[SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (p->a1x[2].a1[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" } */ + T (p->a1x[2].a1[-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (p->a1x[2].a1[0]); + T (p->a1x[2].a1[9]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[2].a1[DIFF_MAX - sizeof *p]);/* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[2].a1[DIFF_MAX - sizeof *p + 1]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[2].a1[SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (p->a1x[3].a1[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" } */ + T (p->a1x[3].a1[-1]); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (p->a1x[3].a1[0]); + T (p->a1x[3].a1[9]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (p->a1x[9].a1[0]); + + enum { MAX = (DIFF_MAX - sizeof *p) / sizeof *p->a1x }; + + T (p->a1x[DIFF_MIN].a1); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" } */ + T (p->a1x[-1].a1); /* { dg-warning "array subscript -1 is below array bounds" } */ + T (p->a1x[MAX].a1); + T (p->a1x[MAX + 2].a1); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (p->a1x[DIFF_MAX].a1); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[SIZE_MAX].a1); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (p->a1x[DIFF_MIN].a1[0]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" } */ + T (p->a1x[-1].a1[0]) /* { dg-warning "array subscript -1 is below array bounds" } */; + T (p->a1x[MAX - 1].a1[0]); + T (p->a1x[MAX].a1[0]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[MAX + 1].a1[0]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + + T (p->a1x[DIFF_MAX].a1[0]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ + T (p->a1x[SIZE_MAX].a1[0]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" } */ +} + +void f_cststring (int i) +{ + T (""[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds of .(const )?char *\\\[1]" "string" { xfail lp64 } } */ + T (""[DIFF_MIN + 1]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds of .(const )?char *\\\[1]" "string" } */ + T (""[-1]); /* { dg-warning "array subscript -1 is below array bounds of .(const )?char *\\\[1]" "string" } */ + T (""[0]); + T (""[1]); /* { dg-warning "array subscript 1 is above array bounds of .(const )?char *\\\[1]" "string" } */ + T ("0"[2]); /* { dg-warning "array subscript 2 is above array bounds of .(const )?char *\\\[2]" "string" } */ + T ("012"[2]); + T ("012"[3]); + T ("012"[4]); /* { dg-warning "array subscript 4 is above array bounds of .(const )?char *\\\[4]" "string" } */ + T ("0123"[DIFF_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds of .(const )?char *\\\[5]" "string" } */ + T ("0123"[SIZE_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds of .(const )?char *\\\[5]" "string" } */ +} + +void fb_strlen (struct B *p) +{ +#define strlen __builtin_strlen + + T (strlen (&p->a1x[0].a1[2])); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" "strlen" } */ + T (strlen (p->a1x[0].a1 + 2)); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" "strlen" { xfail *-*-* } } */ +} + + +void f_vla (unsigned n) +{ + char vla[n]; + + T (vla[DIFF_MIN]); /* { dg-warning "array subscript -\[0-9\]+ is below array bounds" "vla" } */ + T (vla[-1]); /* { dg-warning "array subscript -1 is below array bounds" "vla" } */ + T (vla[0]); + T (vla[1]); + T (vla[n - 1]); + /* It would be nice to diagnose this. */ + T (vla[n]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" "bug 82608" { xfail *-*-*} } */ + T (vla[DIFF_MAX]); /* { dg-warning "array subscript \[0-9\]+ is above array bounds" "vla" } */ +}