/usr/src/gcc-5/debian/patches/libjava-stacktrace.diff is in gcc-5-source 5.5.0-12ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | # DP: libgcj: Lookup source file name and line number in separated
# DP: debug files found in /usr/lib/debug
---
libjava/stacktrace.cc | 27 +++++++++++++++++++++++++++
1 files changed, 27 insertions(+), 0 deletions(-)
Index: b/src/libjava/stacktrace.cc
===================================================================
--- a/src/libjava/stacktrace.cc
+++ b/src/libjava/stacktrace.cc
@@ -17,6 +17,11 @@ details. */
#include <java-stack.h>
#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
#include <java/lang/Boolean.h>
#include <java/lang/Class.h>
@@ -260,6 +265,28 @@ _Jv_StackTrace::getLineNumberForFrame(_J
finder->lookup (binaryName, (jlong) offset);
*sourceFileName = finder->getSourceFile();
*lineNum = finder->getLineNum();
+ if (*lineNum == -1 && info.file_name[0] == '/')
+ {
+ const char *debugPrefix = "/usr/lib/debug";
+ char *debugPath = (char *) malloc (strlen(debugPrefix)
+ + strlen(info.file_name)
+ + 2);
+
+ if (debugPath)
+ {
+ strcpy (debugPath, debugPrefix);
+ strcat (debugPath, info.file_name);
+ //printf ("%s: 0x%x\n", debugPath, offset);
+ if (!access (debugPath, R_OK))
+ {
+ binaryName = JvNewStringUTF (debugPath);
+ finder->lookup (binaryName, (jlong) offset);
+ *sourceFileName = finder->getSourceFile();
+ *lineNum = finder->getLineNum();
+ }
+ free (debugPath);
+ }
+ }
if (*lineNum == -1 && NameFinder::showRaw())
{
gnu::gcj::runtime::StringBuffer *t =
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