[mame] 03/04: Fix an infinite loop in the fallback C code.

[Jordi Mallach]

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commit b1282cc7ea9097219fc63e068d342ffad1a8f612
Author: Jordi Mallach <jordi at debian.org>
Date:   Thu Mar 22 11:47:33 2018 +0100

    Fix an infinite loop in the fallback C code.
    
    Validation tests were failing for mips*, arm*, s390x, and other arches
    with no native ASM.
    
    Cherrypick Vas' patch to fix this.
    
    See https://github.com/mamedev/mame/issues/3371 for more info.
---
 debian/changelog                    |  3 +++
 debian/patches/fix_c_fallback.patch | 21 +++++++++++++++++++++
 debian/patches/series               |  1 +
 3 files changed, 25 insertions(+)

diff --git a/debian/changelog b/debian/changelog
index 5ff29da..ef5962c 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -6,6 +6,9 @@ mame (0.195+dfsg.1-2) UNRELEASED; urgency=medium
   [ Jordi Mallach ]
   * Add B-D-I on python3-distutils so Sphynx works as expected.
   * Move links and doc-base paths to new default location of docs.
+  * Add patch to fix an infinite loop in the fallback C code for
+    mips*, arm*, s390x, and other arches with no native ASM. This
+    fixes the validation tests for the check build rule.
 
  -- Jordi Mallach <jordi at debian.org>  Thu, 22 Mar 2018 11:39:45 +0100
 
diff --git a/debian/patches/fix_c_fallback.patch b/debian/patches/fix_c_fallback.patch
new file mode 100644
index 0000000..36a3948
--- /dev/null
+++ b/debian/patches/fix_c_fallback.patch
@@ -0,0 +1,21 @@
+Index: mame-0.195+dfsg.1/src/osd/eminline.h
+===================================================================
+--- mame-0.195+dfsg.1.orig/src/osd/eminline.h
++++ mame-0.195+dfsg.1/src/osd/eminline.h
+@@ -273,6 +273,7 @@ inline float recip_approx(float value)
+ #ifndef count_leading_zeros
+ inline uint8_t count_leading_zeros(uint32_t val)
+ {
++	if (!val) return 32U;
+ 	uint8_t count;
+ 	for (count = 0; int32_t(val) >= 0; count++) val <<= 1;
+ 	return count;
+@@ -289,7 +290,7 @@ inline uint8_t count_leading_zeros(uint3
+ inline uint8_t count_leading_ones(uint32_t val)
+ {
+ 	uint8_t count;
+-	for (count = 0; (int32_t)val < 0; count++) val <<= 1;
++	for (count = 0; int32_t(val) < 0; count++) val <<= 1;
+ 	return count;
+ }
+ #endif
diff --git a/debian/patches/series b/debian/patches/series
index aefffe1..cd0545f 100644
--- a/debian/patches/series
+++ b/debian/patches/series
@@ -3,3 +3,4 @@ hurd.patch
 sphinx_mathjax_location.patch
 m68000_archopts.patch
 kfreebsd_dirent.h_path.patch
+fix_c_fallback.patch

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