diff options
| -rw-r--r-- | gcc/fold-const.c | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/compile/pr98407.c | 10 |
2 files changed, 13 insertions, 3 deletions
diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 1694ba4..3a0f39a 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -8280,9 +8280,9 @@ native_encode_initializer (tree init, unsigned char *ptr, int len, return 0; if (pos + fieldsize > total_bytes) { - if (ptr != NULL && total_bytes - o < len) - memset (ptr + (total_bytes - o), - '\0', MIN (pos + fieldsize - o, len)); + if (ptr != NULL && total_bytes < len) + memset (ptr + total_bytes, '\0', + MIN (pos + fieldsize, len) - total_bytes); total_bytes = pos + fieldsize; } } diff --git a/gcc/testsuite/gcc.c-torture/compile/pr98407.c b/gcc/testsuite/gcc.c-torture/compile/pr98407.c new file mode 100644 index 0000000..29eb080 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/compile/pr98407.c @@ -0,0 +1,10 @@ +/* PR tree-optimization/98407 */ + +struct S { int a; int b[]; }; +const struct S c = { 0, { 0 } }, d = { 0, { 0 } }; + +int +foo (void) +{ + return __builtin_memcmp (&c, &d, sizeof d); +} |