diff options
Diffstat (limited to 'devel/libusb1/patches/patch-ub')
| -rw-r--r-- | devel/libusb1/patches/patch-ub | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/devel/libusb1/patches/patch-ub b/devel/libusb1/patches/patch-ub new file mode 100644 index 00000000000..40a6fb0a127 --- /dev/null +++ b/devel/libusb1/patches/patch-ub @@ -0,0 +1,36 @@ +$NetBSD: patch-ub,v 1.1.2.2 2019/08/10 12:32:34 bsiegert Exp $ + +Avoid undefined behaviour that breaks clang + +--- libusb/descriptor.c.orig 2019-08-02 09:59:25.784968424 +0900 ++++ libusb/descriptor.c 2019-08-02 09:59:44.009134412 +0900 +@@ -54,7 +54,9 @@ + for (cp = descriptor; *cp; cp++) { + switch (*cp) { + case 'b': /* 8-bit byte */ +- *dp++ = *sp++; ++ memcpy(dp, sp, 1); ++ dp += 1; ++ sp += 1; + break; + case 'w': /* 16-bit word, convert from little endian to CPU */ + dp += ((uintptr_t)dp & 1); /* Align to word boundary */ +@@ -63,7 +65,7 @@ + memcpy(dp, sp, 2); + } else { + w = (sp[1] << 8) | sp[0]; +- *((uint16_t *)dp) = w; ++ memcpy(dp, &w, 4); + } + sp += 2; + dp += 2; +@@ -76,7 +78,7 @@ + } else { + d = (sp[3] << 24) | (sp[2] << 16) | + (sp[1] << 8) | sp[0]; +- *((uint32_t *)dp) = d; ++ memcpy(dp, &d, 4); + } + sp += 4; + dp += 4; + |