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elfutils: fix building elfutils-native with GCC7

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Backport a fix from upstream for a -Wformat-truncation=2 warning
and implement a simple fix for a -Wimplicit-fallthrough warning.

(From OE-Core rev: aaf4c4f3d09ac3897205417eb15e19d54e0c0d05)

Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Joshua Lock
2017-04-06 14:23:13 +01:00
committed by Richard Purdie
parent 34313c4047
commit 5784961762
3 changed files with 83 additions and 0 deletions
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meta/recipes-devtools/elfutils/elfutils-0.168/fallthrough.patch
+36
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@@ -0,0 +1,36 @@
GCC7 adds -Wimplicit-fallthrough to warn when a switch case falls through,
however this causes warnings (which are promoted to errors) with the elfutils
patches from Debian for mips and parisc, which use fallthrough's by design.
Explicitly mark the intentional fallthrough switch cases with a comment to
disable the warnings where the fallthrough behaviour is desired.
Upstream-Status: Pending [debian]
Signed-off-by: Joshua Lock <joshua.g.lock@intel.com>
Index: elfutils-0.168/backends/parisc_retval.c
===================================================================
--- elfutils-0.168.orig/backends/parisc_retval.c
+++ elfutils-0.168/backends/parisc_retval.c
@@ -166,7 +166,7 @@ parisc_return_value_location_ (Dwarf_Die
return nloc_intregpair;
/* Else fall through. */
- }
+ } // fallthrough
case DW_TAG_structure_type:
case DW_TAG_class_type:
Index: elfutils-0.168/backends/mips_retval.c
===================================================================
--- elfutils-0.168.orig/backends/mips_retval.c
+++ elfutils-0.168/backends/mips_retval.c
@@ -387,7 +387,7 @@ mips_return_value_location (Dwarf_Die *f
else
return nloc_intregpair;
}
- }
+ } // fallthrough
/* Fallthrough to handle large types */