diff options
| -rw-r--r-- | ChangeLog | 10 | ||||
| -rw-r--r-- | string/tester.c | 46 |
2 files changed, 54 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog index 579185d23e..3930fd1ca4 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,5 +1,15 @@ 2017-11-14 Joseph Myers <joseph@codesourcery.com> + * string/tester.c (test_stpncpy): Disable -Wstringop-truncation + for stpncpy calls for GCC 8. + (test_strncat): Disable -Wstringop-truncation warning for strncat + calls for GCC 8. Disable -Wstringop-overflow= warning for one + strncat call for GCC 7. + (test_strncpy): Disable -Wstringop-truncation warning for strncpy + calls for GCC 8. + (test_memcmp): Use memcpy instead of strncpy for calls not copying + trailing NUL. + * string/bug-strncat1.c: Include <libc-diag.h>. (main): Disable -Wstringop-truncation for strncat call for GCC 8. diff --git a/string/tester.c b/string/tester.c index 4b928b4f5e..66b11515b0 100644 --- a/string/tester.c +++ b/string/tester.c @@ -264,8 +264,15 @@ test_stpncpy (void) { it = "stpncpy"; memset (one, 'x', sizeof (one)); + DIAG_PUSH_NEEDS_COMMENT; +#if __GNUC_PREREQ (8, 0) + /* GCC 8 warns about stpncpy truncating output; this is deliberately + tested here. */ + DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation"); +#endif check (stpncpy (one, "abc", 2) == one + 2, 1); check (stpncpy (one, "abc", 3) == one + 3, 2); + DIAG_POP_NEEDS_COMMENT; check (stpncpy (one, "abc", 4) == one + 3, 3); check (one[3] == '\0' && one[4] == 'x', 4); check (stpncpy (one, "abcd", 5) == one + 4, 5); @@ -420,13 +427,27 @@ test_strncat (void) equal (one, "cd", 9); (void) strcpy (one, "ab"); + DIAG_PUSH_NEEDS_COMMENT; +#if __GNUC_PREREQ (8, 0) + /* GCC 8 warns about strncat truncating output; this is deliberately + tested here. */ + DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation"); +#endif (void) strncat (one, "cdef", 2); + DIAG_POP_NEEDS_COMMENT; equal (one, "abcd", 10); /* Count-limited. */ (void) strncat (one, "gh", 0); equal (one, "abcd", 11); /* Zero count. */ + DIAG_PUSH_NEEDS_COMMENT; +#if __GNUC_PREREQ (7, 0) + /* GCC 8 warns about strncat bound equal to source length; this is + deliberately tested here. */ + DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-overflow="); +#endif (void) strncat (one, "gh", 2); + DIAG_POP_NEEDS_COMMENT; equal (one, "abcdgh", 12); /* Count and length equal. */ DIAG_PUSH_NEEDS_COMMENT; @@ -523,11 +544,25 @@ test_strncpy (void) equal (one, "abc", 2); /* Did the copy go right? */ (void) strcpy (one, "abcdefgh"); + DIAG_PUSH_NEEDS_COMMENT; +#if __GNUC_PREREQ (8, 0) + /* GCC 8 warns about strncpy truncating output; this is deliberately + tested here. */ + DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation"); +#endif (void) strncpy (one, "xyz", 2); + DIAG_POP_NEEDS_COMMENT; equal (one, "xycdefgh", 3); /* Copy cut by count. */ (void) strcpy (one, "abcdefgh"); + DIAG_PUSH_NEEDS_COMMENT; +#if __GNUC_PREREQ (8, 0) + /* GCC 8 warns about strncpy truncating output; this is deliberately + tested here. */ + DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation"); +#endif (void) strncpy (one, "xyz", 3); /* Copy cut just before NUL. */ + DIAG_POP_NEEDS_COMMENT; equal (one, "xyzdefgh", 4); (void) strcpy (one, "abcdefgh"); @@ -542,7 +577,14 @@ test_strncpy (void) equal (one+5, "fgh", 9); (void) strcpy (one, "abc"); + DIAG_PUSH_NEEDS_COMMENT; +#if __GNUC_PREREQ (8, 0) + /* GCC 8 warns about strncpy truncating output; this is deliberately + tested here. */ + DIAG_IGNORE_NEEDS_COMMENT (8, "-Wstringop-truncation"); +#endif (void) strncpy (one, "xyz", 0); /* Zero-length copy. */ + DIAG_POP_NEEDS_COMMENT; equal (one, "abc", 10); (void) strncpy (one, "", 2); /* Zero-length source. */ @@ -1151,8 +1193,8 @@ test_memcmp (void) { char *a = one + i; char *b = two + i; - strncpy(a, "--------11112222", 16); - strncpy(b, "--------33334444", 16); + memcpy(a, "--------11112222", 16); + memcpy(b, "--------33334444", 16); check(memcmp(b, a, 16) > 0, cnt++); check(memcmp(a, b, 16) < 0, cnt++); } |