diff options
| -rw-r--r-- | clang/lib/Headers/opencl-c.h | 2 | ||||
| -rw-r--r-- | clang/test/SemaOpenCL/printf-format-string-warnings.cl | 13 |
2 files changed, 14 insertions, 1 deletions
diff --git a/clang/lib/Headers/opencl-c.h b/clang/lib/Headers/opencl-c.h index e481c792df7..d1d9c1014e6 100644 --- a/clang/lib/Headers/opencl-c.h +++ b/clang/lib/Headers/opencl-c.h @@ -14462,7 +14462,7 @@ half16 __ovld __cnfn shuffle2(half16 x, half16 y, ushort16 mask); #if __OPENCL_C_VERSION__ >= CL_VERSION_1_2 // OpenCL v1.2 s6.12.13, v2.0 s6.13.13 - printf -int printf(__constant const char* st, ...); +int printf(__constant const char* st, ...) __attribute__((format(printf, 1, 2))); #endif // OpenCL v1.1 s6.11.3, v1.2 s6.12.14, v2.0 s6.13.14 - Image Read and Write Functions diff --git a/clang/test/SemaOpenCL/printf-format-string-warnings.cl b/clang/test/SemaOpenCL/printf-format-string-warnings.cl new file mode 100644 index 00000000000..2b9c5cc3f31 --- /dev/null +++ b/clang/test/SemaOpenCL/printf-format-string-warnings.cl @@ -0,0 +1,13 @@ +// RUN: %clang_cc1 %s -verify -pedantic -fsyntax-only -cl-std=CL2.0 -finclude-default-header + +// Make sure warnings are produced based on printf format strings. + + +kernel void format_string_warnings(__constant char* arg) { + + printf("%d", arg); // expected-warning {{format specifies type 'int' but the argument has type '__constant char *'}} + + printf("not enough arguments %d %d", 4); // expected-warning {{more '%' conversions than data arguments}} + + printf("too many arguments", 4); // expected-warning {{data argument not used by format string}} +} |
