diff options
Diffstat (limited to 'src/pal/tests/palsuite/c_runtime/strncpy/test1/test1.c')
-rw-r--r-- | src/pal/tests/palsuite/c_runtime/strncpy/test1/test1.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/src/pal/tests/palsuite/c_runtime/strncpy/test1/test1.c b/src/pal/tests/palsuite/c_runtime/strncpy/test1/test1.c new file mode 100644 index 0000000000..62baf61ba2 --- /dev/null +++ b/src/pal/tests/palsuite/c_runtime/strncpy/test1/test1.c @@ -0,0 +1,85 @@ +// Licensed to the .NET Foundation under one or more agreements. +// The .NET Foundation licenses this file to you under the MIT license. +// See the LICENSE file in the project root for more information. + +/*============================================================================ +** +** Source: test1.c +** +** Purpose: +** Test to see that you can copy a portion of a string into a new buffer. +** Also check that the strncpy function doesn't overflow when it is used. +** Finally check that if the number of characters given is greater than the +** amount to copy, that the destination buffer is padded with NULLs. +** +** +**==========================================================================*/ + +#include <palsuite.h> + + +int __cdecl main(int argc, char *argv[]) +{ + char dest[80]; + char *result = "foobar"; + char *str = "foobar\0baz"; + char *ret; + int i; + + if (PAL_Initialize(argc, argv)) + { + return FAIL; + } + + + for (i=0; i<80; i++) + { + dest[i] = 'x'; + } + + ret = strncpy(dest, str, 3); + if (ret != dest) + { + Fail("Expected strncpy to return %p, got %p!\n", dest, ret); + } + + if (strncmp(dest, result, 3) != 0) + { + Fail("Expected strncpy to give \"%s\", got \"%s\"!\n", result, dest); + } + + if (dest[3] != 'x') + { + Fail("strncpy overflowed!\n"); + } + + ret = strncpy(dest, str, 40); + if (ret != dest) + { + Fail("Expected strncpy to return %p, got %p!\n", dest, ret); + } + + if (strcmp(dest, result) != 0) + { + Fail("Expected strncpy to give \"%s\", got \"%s\"!\n", result, dest); + } + + for (i=strlen(str); i<40; i++) + { + if (dest[i] != 0) + { + Fail("strncpy failed to pad the destination with NULLs!\n"); + } + } + + if (dest[40] != 'x') + { + Fail("strncpy overflowed!\n"); + } + + + + PAL_Terminate(); + + return PASS; +} |