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| author | Martin Sebor <msebor@redhat.com> | 2020-03-04 10:23:49 -0700 |
|---|---|---|
| committer | Martin Sebor <msebor@redhat.com> | 2020-03-04 10:23:49 -0700 |
| commit | 3ca63e1c76b7693b5d3f5ba2567421defc764249 (patch) | |
| tree | 4b8e084200fa351868c1679646e329a4b790684b | |
| parent | 97bd1d6b5139aaf09bea288b2af2cb46f2c71f0d (diff) | |
| download | gcc-3ca63e1c76b7693b5d3f5ba2567421defc764249.zip gcc-3ca63e1c76b7693b5d3f5ba2567421defc764249.tar.gz gcc-3ca63e1c76b7693b5d3f5ba2567421defc764249.tar.bz2 | |
PR middle-end/81401 - false positive -Wformat-overflow in a loop
gcc/testsuite/ChangeLog:
* gcc.dg/tree-ssa/builtin-sprintf-warn-24.c: New test.
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-24.c | 22 |
2 files changed, 27 insertions, 0 deletions
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 83882d2..b28eb52 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2020-03-04 Martin Sebor <msebor@redhat.com> + + PR middle-end/81401 + * gcc.dg/tree-ssa/builtin-sprintf-warn-24.c: New test. + 2020-03-04 Will Schmidt <will_schmidt@vnet.ibm.com> * gcc.target/powerpc/20050603-3.c: Remove XFAILS. diff --git a/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-24.c b/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-24.c new file mode 100644 index 0000000..d910978 --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/builtin-sprintf-warn-24.c @@ -0,0 +1,22 @@ +/* PR middle-end/81401 - false positive -Wformat-overflow in a loop + { dg-do compile } + { dg-options "-O2 -Wall -Wformat-overflow" } */ + +char a[3]; + +void f (void) +{ + int i, i0 = 0x00; + + for (i = i0; i <= 0xff; ++i) + __builtin_sprintf (a, "%02x", i); // { dg-bogus "\\\[-Wformat-overflow" } +} + +char b[2]; + +void g (void) +{ + int i; + for (i = 0; i < 10; ++i) + __builtin_sprintf (b, "%d", i); // { dg-bogus "\\\[-Wformat-overflow" } +} |