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[tsan] reduce the size of stack frame in MapRodata to please gcc 4.8.2 

llvm-svn: 199200
This commit is contained in:
Kostya Serebryany 2014-01-14 10:25:42 +00:00
parent 096d6e44fd
commit 19e6e4a445
1 changed files with 5 additions and 6 deletions
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11
compiler-rt/lib/tsan/rtl/tsan_platform_linux.cc
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@ -139,12 +139,13 @@ static void MapRodata() {
#endif
if (tmpdir == 0)
return;
char filename[256];
internal_snprintf(filename, sizeof(filename), "%s/tsan.rodata.%d",
char name[256];
internal_snprintf(name, sizeof(name), "%s/tsan.rodata.%d",
tmpdir, (int)internal_getpid());
uptr openrv = internal_open(filename, O_RDWR | O_CREAT | O_EXCL, 0600);
uptr openrv = internal_open(name, O_RDWR | O_CREAT | O_EXCL, 0600);
if (internal_iserror(openrv))
return;
internal_unlink(name); // Unlink it now, so that we can reuse the buffer.
fd_t fd = openrv;
// Fill the file with kShadowRodata.
const uptr kMarkerSize = 512 * 1024 / sizeof(u64);
@ -157,13 +158,12 @@ static void MapRodata() {
MAP_PRIVATE | MAP_ANONYMOUS, fd, 0);
if (internal_iserror(page)) {
internal_close(fd);
internal_unlink(filename);
return;
}
// Map the file into shadow of .rodata sections.
MemoryMappingLayout proc_maps(/*cache_enabled*/true);
uptr start, end, offset, prot;
char name[128];
// Reusing the buffer 'name'.
while (proc_maps.Next(&start, &end, &offset, name, ARRAY_SIZE(name), &prot)) {
if (name[0] != 0 && name[0] != '['
&& (prot & MemoryMappingLayout::kProtectionRead)
@ -180,7 +180,6 @@ static void MapRodata() {
}
}
internal_close(fd);
internal_unlink(filename);
}
void InitializeShadowMemory() {