Mercurial > hg > CbC > CbC_gcc
diff gcc/testsuite/gcc.dg/tree-ssa/builtin-snprintf-2.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/tree-ssa/builtin-snprintf-2.c Fri Oct 27 22:46:09 2017 +0900 @@ -0,0 +1,24 @@ +/* PR middle-end/79496 - call to snprintf with non-zero size eliminated + with -Wformat-truncation=2 + { dg-do compile } + { dg-options "-O2 -Wall -Wformat-truncation=2 -fprintf-return-value -fdump-tree-optimized" } */ + +char d[2]; + +int test_cst (unsigned n) +{ + if (1 < n) + n = 0; + + return __builtin_snprintf (d, n, "%d", 1); +} + +int test_var (char *d, unsigned n) +{ + if (2 < n) + n = 0; + + return __builtin_snprintf (d, n, "%i", 1); +} + +/* { dg-final { scan-tree-dump-times "snprintf" 2 "optimized"} } */