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-rw-r--r--mesonbuild/environment.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/mesonbuild/environment.py b/mesonbuild/environment.py
index ed5a216..29ff19e 100644
--- a/mesonbuild/environment.py
+++ b/mesonbuild/environment.py
@@ -537,7 +537,10 @@ class Environment:
# Visual Studio prints version number to stderr but
# everything else to stdout. Why? Lord only knows.
version = search_version(err)
- is_64 = err.split()[0].endswith(' x64')
+ if not err or not err.split('\n')[0]:
+ m = 'Failed to detect MSVC compiler arch: stderr was\n{!r}'
+ raise EnvironmentException(m.format(err))
+ is_64 = err.split('\n')[0].endswith(' x64')
cls = VisualStudioCCompiler if lang == 'c' else VisualStudioCPPCompiler
return cls(compiler, version, is_cross, exe_wrap, is_64)
if '(ICC)' in out: