[PATCH] D119528: [Clang][Sema] Add a missing regression test about Wliteral-range

[Jun Zhang via Phabricator via cfe-commits]

junaire created this revision.
junaire added a reviewer: aaron.ballman.
junaire requested review of this revision.
Herald added a project: clang.
Herald added a subscriber: cfe-commits.

This patch adds a missing test, covering the different kinds of floating-point
literals, like hexadecimal floats, and testing extreme cases & normal cases.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D119528

Files:
  clang/test/Sema/warn-literal-range.c


Index: clang/test/Sema/warn-literal-range.c
===================================================================
--- /dev/null
+++ clang/test/Sema/warn-literal-range.c
@@ -0,0 +1,25 @@
+// RUN: %clang_cc1 -std=c99 -verify %s
+
+float f0 = 0.42f; // no-warning
+
+float f1 = 1.4E-46f; // expected-warning {{magnitude of floating-point constant too small for type 'float'; minimum is 1.40129846E-45}}
+
+float f2 = 3.4E+39f; // expected-warning {{magnitude of floating-point constant too large for type 'float'; maximum is 3.40282347E+38}}
+
+float f3 = 0x4.2p42f; // no-warning
+
+float f4 = 0x0.42p-1000f; // expected-warning {{magnitude of floating-point constant too small for type 'float'; minimum is 1.40129846E-45}}
+
+float f5 = 0x0.42p+1000f; // expected-warning {{magnitude of floating-point constant too large for type 'float'; maximum is 3.40282347E+38}}
+
+double d0 = 0.42; // no-warning
+
+double d1 = 3.6E-4952; // expected-warning {{magnitude of floating-point constant too small for type 'double'; minimum is 4.9406564584124654E-324}}
+
+double d2 = 1.7E+309; // expected-warning {{magnitude of floating-point constant too large for type 'double'; maximum is 1.7976931348623157E+308}}
+
+double d3 = 0x0.42p42; // no-warning
+
+double d4 = 0x0.42p-4200; // expected-warning {{magnitude of floating-point constant too small for type 'double'; minimum is 4.9406564584124654E-324}}
+
+double d5 = 0x0.42p+4200; // expected-warning {{magnitude of floating-point constant too large for type 'double'; maximum is 1.7976931348623157E+308}}


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