path: root/arch
diff options
authorRich Felker <>2013-07-24 02:17:02 -0400
committerRich Felker <>2013-07-24 02:17:02 -0400
commit9693501c158d68431962938cb02e7d8d2ef89ca3 (patch)
tree2596b176d5dfe6f05854a86286d52d2a233b0354 /arch
parent4a30ba5ca4072e85e42e84547572e958871952a2 (diff)
change jmp_buf to share an underlying type and struct tag with sigjmp_buf
this is necessary to meet the C++ ABI target. alternatives were considered to avoid the size increase for non-sig jmp_buf objects, but they seemed to have worse properties. moreover, the relative size increase is only extreme on x86[_64]; one way of interpreting this is that, if the size increase from this patch makes jmp_buf use too much memory, then the program was already using too much memory when built for non-x86 archs.
Diffstat (limited to 'arch')
6 files changed, 6 insertions, 6 deletions
diff --git a/arch/arm/bits/setjmp.h b/arch/arm/bits/setjmp.h
index 3938cb8a..55e3a95b 100644
--- a/arch/arm/bits/setjmp.h
+++ b/arch/arm/bits/setjmp.h
@@ -1 +1 @@
-typedef unsigned long long jmp_buf[32];
+typedef unsigned long long __jmp_buf[32];
diff --git a/arch/i386/bits/setjmp.h b/arch/i386/bits/setjmp.h
index 5610be9b..decd26dc 100644
--- a/arch/i386/bits/setjmp.h
+++ b/arch/i386/bits/setjmp.h
@@ -1 +1 @@
-typedef unsigned long jmp_buf[6];
+typedef unsigned long __jmp_buf[6];
diff --git a/arch/microblaze/bits/setjmp.h b/arch/microblaze/bits/setjmp.h
index 8f0376b2..b2bd9748 100644
--- a/arch/microblaze/bits/setjmp.h
+++ b/arch/microblaze/bits/setjmp.h
@@ -1 +1 @@
-typedef unsigned long jmp_buf[18];
+typedef unsigned long __jmp_buf[18];
diff --git a/arch/mips/bits/setjmp.h b/arch/mips/bits/setjmp.h
index 6bb15464..467872e9 100644
--- a/arch/mips/bits/setjmp.h
+++ b/arch/mips/bits/setjmp.h
@@ -1 +1 @@
-typedef unsigned long long jmp_buf [15];
+typedef unsigned long long __jmp_buf[15];
diff --git a/arch/powerpc/bits/setjmp.h b/arch/powerpc/bits/setjmp.h
index ab583aba..1cb0f26d 100644
--- a/arch/powerpc/bits/setjmp.h
+++ b/arch/powerpc/bits/setjmp.h
@@ -1 +1 @@
-typedef unsigned long long jmp_buf [56];
+typedef unsigned long long __jmp_buf[56];
diff --git a/arch/x86_64/bits/setjmp.h b/arch/x86_64/bits/setjmp.h
index 81d4968a..63973a80 100644
--- a/arch/x86_64/bits/setjmp.h
+++ b/arch/x86_64/bits/setjmp.h
@@ -1 +1 @@
-typedef unsigned long jmp_buf[8];
+typedef unsigned long __jmp_buf[8];