expr.c (eval_token): Append "evaluates to 0" to Wundef diagnostic.

2016-08-19  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>

libcpp/
	* expr.c (eval_token): Append "evaluates to 0" to Wundef diagnostic.

testsuite/
	* gcc.dg/cpp/warn-undef.c: Append "evaluates to 0" to dg-error.
	* gcc.dg/cpp/warn-undef-2.c: Likewise.

From-SVN: r239609

diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 4567c7e..6590fab 100644 (file)
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2016-08-19  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
+
+       * gcc.dg/cpp/warn-undef.c: Append "evaluates to 0" to dg-error.
+       * gcc.dg/cpp/warn-undef-2.c: Likewise.
+
 2016-08-19  Richard Biener  <rguenther@suse.de>
 
        PR tree-optimization/77286

diff --git a/gcc/testsuite/gcc.dg/cpp/warn-undef-2.c b/gcc/testsuite/gcc.dg/cpp/warn-undef-2.c
index 15fdde9..e71aeba 100644 (file)
--- a/gcc/testsuite/gcc.dg/cpp/warn-undef-2.c
+++ b/gcc/testsuite/gcc.dg/cpp/warn-undef-2.c
@@ -1,5 +1,5 @@
 // { dg-do preprocess }
 // { dg-options "-std=gnu99 -fdiagnostics-show-option -Werror=undef" }
 /* { dg-message "some warnings being treated as errors" "" {target "*-*-*"} 0 } */
-#if x  // { dg-error "\"x\" is not defined .-Werror=undef." }
+#if x  // { dg-error "\"x\" is not defined, evaluates to 0 .-Werror=undef." }
 #endif

diff --git a/gcc/testsuite/gcc.dg/cpp/warn-undef.c b/gcc/testsuite/gcc.dg/cpp/warn-undef.c
index dd4524d..2c2c421 100644 (file)
--- a/gcc/testsuite/gcc.dg/cpp/warn-undef.c
+++ b/gcc/testsuite/gcc.dg/cpp/warn-undef.c
@@ -1,5 +1,5 @@
 // { dg-do preprocess }
 // { dg-options "-std=gnu99 -fdiagnostics-show-option -Wundef" }
 
-#if x  // { dg-warning "\"x\" is not defined .-Wundef." }
+#if x  // { dg-warning "\"x\" is not defined, evaluates to 0 .-Wundef." }
 #endif

diff --git a/libcpp/ChangeLog b/libcpp/ChangeLog
index 5d4a094..e8e43f7 100644 (file)
--- a/libcpp/ChangeLog
+++ b/libcpp/ChangeLog
@@ -1,3 +1,7 @@
+2016-08-19  Prathamesh Kulkarni  <prathamesh.kulkarni@linaro.org>
+
+       * expr.c (eval_token): Append "evaluates to 0" to Wundef diagnostic.
+
 2016-08-18  David Malcolm  <dmalcolm@redhat.com>
 
        * directives.c (directive_names): New array.

diff --git a/libcpp/expr.c b/libcpp/expr.c
index 5cdca6f..d32f5a9 100644 (file)
--- a/libcpp/expr.c
+++ b/libcpp/expr.c
@@ -1073,7 +1073,7 @@ eval_token (cpp_reader *pfile, const cpp_token *token,
          result.low = 0;
          if (CPP_OPTION (pfile, warn_undef) && !pfile->state.skip_eval)
            cpp_warning_with_line (pfile, CPP_W_UNDEF, virtual_location, 0,
-                                  "\"%s\" is not defined",
+                                  "\"%s\" is not defined, evaluates to 0",
                                   NODE_NAME (token->val.node.node));
        }
       break;