From 3a34f37fbc5af8eca7a70f5dab61dca7ee1706b0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?John=20H=C3=B6gberg?= <john@erlang.org>
Date: Fri, 5 Oct 2018 10:06:35 +0200
Subject: compiler: Forward +source flag to epp and fix bug in +deterministic

The source file path as given to `erlc` was included in an implicit
file attribute inserted by epp, even when the +source flag was
set to something else which was a bit surprising. It was also
included when +deterministic was specified, breaking the flag's
promise.

This commit forwards the +source flag to epp so it inserts the
right information, and if +deterministic is given it will be shaved
to just the base name of the file, guaranteeing the same result
regardless of how the input is reached.
---
 lib/compiler/doc/src/compile.xml | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'lib/compiler/doc/src')

diff --git a/lib/compiler/doc/src/compile.xml b/lib/compiler/doc/src/compile.xml
index 1a71c83521..cfbd4c7fda 100644
--- a/lib/compiler/doc/src/compile.xml
+++ b/lib/compiler/doc/src/compile.xml
@@ -203,7 +203,8 @@
           <tag><c>deterministic</c></tag>
           <item>
             <p>Omit the <c>options</c> and <c>source</c> tuples in
-	    the list returned by <c>Module:module_info(compile)</c>.
+            the list returned by <c>Module:module_info(compile)</c>, and
+            reduce the paths in stack traces to the module name alone.
 	    This option will make it easier to achieve reproducible builds.
 	    </p>
           </item>
@@ -347,8 +348,8 @@ module.beam: module.erl \
 
 	  <tag><c>{source,FileName}</c></tag>
           <item>
-            <p>Sets the value of the source, as returned by
-              <c>module_info(compile)</c>.</p>
+            <p>Overrides the source file name as presented in
+              <c>module_info(compile)</c> and stack traces.</p>
           </item>
 
 	  <tag><c>{outdir,Dir}</c></tag>
-- 
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