Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/gcc.dg/uninit-9.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gcc/testsuite/gcc.dg/uninit-9.c Fri Oct 27 22:46:09 2017 +0900 @@ -0,0 +1,42 @@ +/* Spurious uninitialized variable warnings. Slight variant on the + documented case, inspired by reg-stack.c:record_asm_reg_life. */ + +/* { dg-do compile } */ +/* { dg-options "-O -Wuninitialized" } */ +/* { dg-require-effective-target alloca } */ + +struct foo +{ + int type; + struct foo *car; + struct foo *cdr; + char *data; + int data2; +}; + +extern void use(struct foo *); + +#define CLOBBER 6 +#define PARALLEL 3 + +void +func(struct foo *list, int count) +{ + int n_clobbers = 0; + int i; + struct foo **clob_list; /* { dg-bogus "clob_list" "uninitialized variable warning" } */ + + if(list[0].type == PARALLEL) + { + clob_list = __builtin_alloca(count * sizeof(struct foo *)); + + for(i = 1; i < count; i++) + { + if(list[i].type == CLOBBER) + clob_list[n_clobbers++] = &list[i]; + } + } + + for(i = 0; i < n_clobbers; i++) + use(clob_list[i]); +}