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author | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
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committer | Ben Cheng <bccheng@google.com> | 2014-03-25 22:37:19 -0700 |
commit | 1bc5aee63eb72b341f506ad058502cd0361f0d10 (patch) | |
tree | c607e8252f3405424ff15bc2d00aa38dadbb2518 /gcc-4.9/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c | |
parent | 283a0bf58fcf333c58a2a92c3ebbc41fb9eb1fdb (diff) | |
download | toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.gz toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.tar.bz2 toolchain_gcc-1bc5aee63eb72b341f506ad058502cd0361f0d10.zip |
Initial checkin of GCC 4.9.0 from trunk (r208799).
Change-Id: I48a3c08bb98542aa215912a75f03c0890e497dba
Diffstat (limited to 'gcc-4.9/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c')
-rw-r--r-- | gcc-4.9/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/gcc-4.9/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c b/gcc-4.9/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c new file mode 100644 index 000000000..44677f167 --- /dev/null +++ b/gcc-4.9/gcc/testsuite/gcc.dg/builtin-strncat-chk-1.c @@ -0,0 +1,38 @@ +/* Test whether buffer overflow warnings for __strncat_chk builtin + are emitted properly. */ +/* { dg-do compile } */ +/* { dg-options "-O2 -std=gnu99 -ftrack-macro-expansion=0" } */ + +extern void abort (void); + +#include "../gcc.c-torture/execute/builtins/chk.h" + +char buf1[20]; +char *q; + +void +test (int arg, ...) +{ + char *p = &buf1[10]; + + *p = 0; + strncat (p, "abcdefg", 9); + *p = 0; + strncat (p, "abcdefghi", 9); + *p = 0; + strncat (p, "abcdefghij", 9); + *p = 0; + strncat (p, "abcdefghi", 10); + *p = 0; + strncat (p, "abcdefghij", 10); /* { dg-warning "will always overflow" } */ + *p = 0; + strncat (p, "abcdefgh", 11); + *p = 0; + strncat (p, "abcdefghijkl", 11); /* { dg-warning "will always overflow" } */ + *p = 0; + strncat (p, q, 9); + *p = 0; + strncat (p, q, 10); /* { dg-warning "might overflow" } */ + *p = 0; + strncat (p, q, 11); /* { dg-warning "might overflow" } */ +} |