[Fixed Point Arithmetic] Fix for bug where integer literals could be treated as fixed point literals
This addresses a bug brought up in https://bugs.llvm.org/show_bug.cgi?id=38161 where integer literals could be treated as fixed point types and throw errors related to fixed point types when the 'k' or 'r' suffix used. The fix also addresses the second issue brought up with the assertion by not treating integers as fixed point types in the first place.
Integers that have suffixes 'k' and 'r' now throw the error `invalid suffix 'k/r' on integer constant`.
A few more tests were also added to ensure that fixed point types, and any errors/warnings related to them, are limited to C for now.
Prior discussion also at https://reviews.llvm.org/D46915.
Differential Revision: https://reviews.llvm.org/D49327
llvm-svn: 337289
diff --git a/clang/test/Frontend/fixed_point_not_enabled.c b/clang/test/Frontend/fixed_point_not_enabled.c
index e5c82f5..e752221 100644
--- a/clang/test/Frontend/fixed_point_not_enabled.c
+++ b/clang/test/Frontend/fixed_point_not_enabled.c
@@ -13,3 +13,9 @@
_Accum accum; // expected-error{{compile with '-ffixed-point' to enable fixed point types}}
// expected-warning@-1{{type specifier missing, defaults to 'int'}}
long _Accum long_accum; // expected-error{{compile with '-ffixed-point' to enable fixed point types}}
+
+// Cannot use fixed point suffixes
+int accum_int = 10k; // expected-error{{invalid suffix 'k' on integer constant}}
+int fract_int = 10r; // expected-error{{invalid suffix 'r' on integer constant}}
+float accum_flt = 10.0k; // expected-error{{invalid suffix 'k' on floating constant}}
+float fract_flt = 10.0r; // expected-error{{invalid suffix 'r' on floating constant}}