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authorBob Duff <duff@adacore.com>2019-08-14 09:52:24 +0000
committerPierre-Marie de Rodat <pmderodat@gcc.gnu.org>2019-08-14 09:52:24 +0000
commitdba246bfabc54c9a97304f4ab65fda62bd2936c8 (patch)
tree802500001857fadec9dcc6a5b14f93c9223b3321 /gcc/ada/inline.adb
parent2d1439c7ad59625fea5598dda6679c6f3be1fa1c (diff)
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[Ada] Incorrect error on inline protected function
This patch fixes a bug where if a protected function has a pragma Inline, and has no local variables, and the body consists of a single extended_return_statement, and the result type is an indefinite composite subtype, and inlining is enabled, the compiler gives an error, even though the program is legal. 2019-08-14 Bob Duff <duff@adacore.com> gcc/ada/ * inline.adb (Check_And_Split_Unconstrained_Function): Ignore protected functions to get rid of spurious error. The transformation done by this procedure triggers legality errors in the generated code in this case. gcc/testsuite/ * gnat.dg/inline19.adb, gnat.dg/inline19.ads: New testcase. From-SVN: r274467
Diffstat (limited to 'gcc/ada/inline.adb')
-rw-r--r--gcc/ada/inline.adb14
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/ada/inline.adb b/gcc/ada/inline.adb
index 05830e1..5dbd9a1 100644
--- a/gcc/ada/inline.adb
+++ b/gcc/ada/inline.adb
@@ -2041,6 +2041,8 @@ package body Inline is
Original_Body : Node_Id;
Body_To_Analyze : Node_Id;
+ -- Start of processing for Build_Body_To_Inline
+
begin
pragma Assert (Current_Scope = Spec_Id);
@@ -2448,6 +2450,18 @@ package body Inline is
elsif Present (Body_To_Inline (Decl)) then
return;
+ -- Do not generate a body to inline for protected functions, because the
+ -- transformation generates a call to a protected procedure, causing
+ -- spurious errors. We don't inline protected operations anyway, so
+ -- this is no loss. We might as well ignore intrinsics and foreign
+ -- conventions as well -- just allow Ada conventions.
+
+ elsif not (Convention (Spec_Id) = Convention_Ada
+ or else Convention (Spec_Id) = Convention_Ada_Pass_By_Copy
+ or else Convention (Spec_Id) = Convention_Ada_Pass_By_Reference)
+ then
+ return;
+
-- Check excluded declarations
elsif Present (Declarations (N))