backtrace only for glibc on linux

ddcc · ddcc · commit d74c49bbbf16 · 2020-09-22T20:07:38.000-04:00
diff --git a/llvm-4.0.0.src/projects/compiler-rt/lib/lowfat/lowfat_linux.c b/llvm-4.0.0.src/projects/compiler-rt/lib/lowfat/lowfat_linux.c
@@ -61,6 +61,7 @@ static void lowfat_random_page(void *buf)
 			path);
 }
 
+#ifdef __GLIBC__
 #include <execinfo.h>
 static LOWFAT_NOINLINE void lowfat_backtrace(void)
 {
@@ -73,6 +74,9 @@ static LOWFAT_NOINLINE void lowfat_backtrace(void)
 	if (len == 0 || len == sizeof(trace) / sizeof(void *))
 	    fprintf(stderr, "...\n");
 }
+#else
+static LOWFAT_NOINLINE void lowfat_backtrace(void) { }
+#endif /* __GLIBC__ */
 
 /*
  * Open a unique+anonymous shared memory object.

Original file line number	Diff line number	Diff line change
`@@ -61,6 +61,7 @@ static void lowfat_random_page(void *buf)`
`61`	`61`	`path);`
`62`	`62`	`}`
`63`	`63`
	`64`	`+#ifdef __GLIBC__`
`64`	`65`	`#include <execinfo.h>`
`65`	`66`	`static LOWFAT_NOINLINE void lowfat_backtrace(void)`
`66`	`67`	`{`
`@@ -73,6 +74,9 @@ static LOWFAT_NOINLINE void lowfat_backtrace(void)`
`73`	`74`	`if (len == 0 \|\| len == sizeof(trace) / sizeof(void *))`
`74`	`75`	`fprintf(stderr, "...\n");`
`75`	`76`	`}`
	`77`	`+#else`
	`78`	`+static LOWFAT_NOINLINE void lowfat_backtrace(void) { }`
	`79`	`+#endif /* __GLIBC__ */`
`76`	`80`
`77`	`81`	`/*`
`78`	`82`	`* Open a unique+anonymous shared memory object.`