Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/gcc.dg/pr36902.c @ 111:04ced10e8804
gcc 7
author | kono |
---|---|
date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 1830386684a0 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/gcc.dg/pr36902.c Fri Oct 27 22:46:09 2017 +0900 @@ -0,0 +1,61 @@ +/* PR middle-end/36902 Array bound warning with dead code after optimization */ +/* { dg-do compile } */ +/* { dg-options "-O2 -Warray-bounds -Wall -Wextra" } */ +typedef unsigned char __u8; +typedef unsigned short __u16; + +static inline unsigned char * +foo(unsigned char * to, const unsigned char * from, int n) +{ + switch ( n ) + { + case 3: + *to = *from; + break; + case 5: + to[4] = from [4]; + break; + } + return to; +} + +struct { + int size_of_select; + unsigned char pcr_select[4]; +} sel; + +int bar(void) +{ + static unsigned char buf[64]; + + sel.size_of_select = 3; + foo(buf, sel.pcr_select, sel.size_of_select); + + return 1; +} + + +static inline unsigned char * +foo2(unsigned char * to, const unsigned char * from, int n) +{ + switch ( n ) + { + case 3: + *to = *from; + break; + case 5: + to[4] = from [4]; /* { dg-warning "array subscript is above array bounds" "" { xfail *-*-* } } */ + break; + } + return to; +} + +int baz(void) +{ + static unsigned char buf[64]; + + sel.size_of_select = 5; + foo2(buf, sel.pcr_select, sel.size_of_select); + + return 1; +}