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Improve alloca() memory safety

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Now that all the bugs have been wormed out of the ASAN memory module we
can successfully check for underruns on large stack allocations.
This commit is contained in:
Justine Tunney 2022-04-01 22:44:43 -07:00
parent 1ff1854107
commit 38cb6e71ca
4 changed files with 10 additions and 13 deletions
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12
third_party/quickjs/qjsc.c vendored
View file

@ -26,6 +26,7 @@
#include "libc/fmt/fmt.h"
#include "libc/log/log.h"
#include "libc/mem/mem.h"
#include "libc/runtime/gc.internal.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/x/x.h"
@ -476,7 +477,7 @@ int main(int argc, char **argv)
{
int c, i, verbose;
const char *out_filename, *cname;
char cfilename[1024];
char *cfilename = gc(malloc(1024));
FILE *fo;
JSRuntime *rt;
JSContext *ctx;
@ -603,14 +604,9 @@ int main(int argc, char **argv)
}
}
if (output_type == OUTPUT_EXECUTABLE) {
#if defined(_WIN32) || defined(__ANDROID__)
/* XXX: find a /tmp directory ? */
snprintf(cfilename, sizeof(cfilename), "out%d.c", getpid());
#else
snprintf(cfilename, sizeof(cfilename), "/tmp/out%d.c", getpid());
#endif
snprintf(cfilename, 1024, "/tmp/out%d.c", getpid());
} else {
pstrcpy(cfilename, sizeof(cfilename), out_filename);
pstrcpy(cfilename, 1024, out_filename);
}
fo = fopen(cfilename, "w");
if (!fo) {